CCTV News:Winter is the season of high incidence of respiratory diseases. Recently, in Yongchuan District, Chongqing, the number of outpatient and emergency departments in major pediatrics is at a high level, and various measures have been taken to effectively do a good job in the diagnosis and treatment of respiratory diseases in children.

　　In Yongchuan District People’s Hospital of Chongqing, recently, the daily average number of pediatric outpatient and emergency departments is about 800, of which more than 70% are children’s respiratory diseases. The hospital expanded wards, increased beds, and opened night clinics for children to facilitate children to seek medical treatment in time.

　　Wang Jun, Head of Medical Administration Department, Yongchuan District Health and Health Committee, Chongqing:Fever clinics in primary health care institutions should be fully opened, service hours should be extended, weekend clinics should be increased, 12 teams should be set up to help 23 primary health care institutions improve their ability to diagnose and treat respiratory diseases, and various measures should be taken to increase the supply of pediatric medical services, optimize the allocation of medical resources, and improve the ability of pediatric emergency services.

　　High incidence of respiratory diseases, multi-measures to deal with the peak of pediatric visits

　　At present, respiratory diseases have entered a period of high incidence. The number of people with cold, fever, cough and other symptoms has increased significantly in many parts of the country, especially many children infected with respiratory diseases, which not only worries parents, but also increases the number of diagnosis and treatment services in many pediatric hospitals.

　　Recently, the General Office of the National Health and Wellness Commission issued a notice to guide grassroots medical and health institutions to do a good job in health services for respiratory diseases in winter and spring, and put forward measures such as doing everything possible to tap resources to carry out pediatric diagnosis and treatment services and strengthening the support of general hospitals for grassroots medical and health institutions.

　　At 9: 40 in the morning, in the South Campus of Shuangqiao Hospital in Chaoyang District, Beijing, the number of children and parents waiting at the entrance of the pediatric clinic began to increase. Shuangqiao Hospital is a second-class general hospital in Beijing, with 27 clinical departments. The pediatric setting has continued since the establishment of the hospital. Now there are 4 pediatricians, which can meet the basic medical needs of children around the hospital.

　　According to the monitoring data of the hospital, in September, 2023, the average daily outpatient volume of pediatrics in the hospital was 74. After entering October, the data curve increased obviously.

　　Although the number of recent visits has tripled or quadrupled compared with daily visits, the reporter saw here that even during the peak hours of children’s visits, the number of people waiting at the entrance of the pediatric clinic never exceeded 12, and children and parents were basically divided into two clinics within half an hour.

　　In order to cope with the peak of respiratory diseases in autumn and winter in 2023 and reduce the stay time of patients in the hospital, Shuangqiao Hospital optimized the treatment process.

　　In the registration process, the outpatient hall dynamically adjusts the number of manual registration windows, every morning at 8: 00 — At 5: 00 pm, the pediatric registration is not limited. After the registration, you can wait outside the clinic.

　　Outside the clinic, the medical staff who are asking about the illness of the children are full-time medical assistants specially set up for pediatric outpatient clinics in the hospital.

　　Before the child sees a doctor, the doctor can get the basic information of the child from the doctor’s assistant. After a preliminary judgment, the parents of the child can take the test items prescribed by the doctor and take the child for further examination. In this link, the hospital has also carried out dynamic optimization.

　　In order to reduce the time for patients to wait for results, the number of hospital inspection personnel is also dynamically adjusted with the demand.

　　In addition to optimizing the medical treatment process, in order to cope with the epidemic peak of respiratory diseases, many primary hospitals have increased the number of consultation places and opened weekend clinics. At present, Shuangqiao Hospital has implemented holiday-free clinics in the south and north hospitals, and both hospitals are equipped with the same inspection and testing items.

　　Relieve the pressure of hospital treatment through community health service center

　　In order to cope with the long waiting time in pediatrics and the overload of some children’s specialized hospitals, the National Health and Wellness Commission has previously instructed all localities to publicize the information of medical institutions that can provide pediatric diagnosis and treatment services in the region, so as to facilitate patients to seek medical treatment nearby. Not long ago, Chaoyang District published a list of primary medical and health institutions providing pediatric services in its jurisdiction on the Healthy Chaoyang WeChat official account. Cuigezhuang Community Health Service Center is one of them. Recently, there have been more calls to consult pediatrics.

　　Sun Li hasn’t been idle since she took the office phone with her colleagues at 8 am. Most of the calls these days are for consultation with pediatrics.

　　At the same time as the other party consulted, Sun Li also made a preliminary understanding and judgment on the situation of the child.

　　In order to cope with the peak of respiratory diseases in the winter of 2023, Cuigezhuang Community Health Service Center began to optimize the consultation process as early as October and implemented pediatric holiday-free outpatient service. In order to make children infected in the community find out and treat them early, medical staff also make full use of the family doctor signing system to answer questions for the surrounding residents in the WeChat group.

　　Residents and doctors in the WeChat group are familiar with each other. Usually, when residents have a headache, they will directly ask for medicine in the group. For a long time, the two sides have established close ties. In such a special period, this close relationship will play a huge role.

　　In the winter of 2023, although a variety of respiratory diseases were prevalent, no new pathogens appeared. For doctors, these respiratory diseases are common diseases that have to be dealt with every autumn and winter. There is little difference in the diagnosis and treatment of mild children, whether they go to a specialized hospital or stay in the community.

　　Set up a hospital outpatient department in the community to facilitate children to see a doctor

　　In order to facilitate people to see a doctor in primary medical institutions, some general hospitals have also set up hospital outpatient departments in the community, and doctors have been stationed for a long time.

　　Recently, Ren Yumei, a pediatrician in the First Affiliated Hospital of Henan University of Traditional Chinese Medicine, was sitting in the Provence Community Hospital in Zhengzhou.

　　Ren Yumei, Deputy Chief Physician of Pediatrics, First Affiliated Hospital of Henan University of Traditional Chinese Medicine:Our community clinics have 1-mdash all the year round; Two specialists are stationed here. At the same time, according to the high incidence season of respiratory infection this year, the hospital sent 5-mdash; Six senior doctors, basically every day we have 2-mdash; Three specialists and general practitioners are together to jointly maintain primary diagnosis and treatment. At present, the community can realize the synchronous diagnosis and treatment process with the hospital, and can do basic blood routine, mycoplasma and influenza, including pulmonary ultrasound imaging, which can completely help us complete the preliminary diagnosis and treatment of common epidemics, infectious diseases and respiratory diseases.

CCTV News:"Build an agricultural power with strong supply guarantee, strong scientific and technological equipment, strong management system, strong industrial resilience and strong competitiveness." On February 14th, the State Council held a series of press conferences on the theme of "Opening by Authoritative Departments" to introduce the key tasks of comprehensively promoting rural revitalization in 2023. Tang Renjian, director of the Office of the Central Leading Group for Rural Work and Minister of Agriculture and Rural Affairs, said in response to a question from a CCTV reporter at the General Station that it is necessary to have the common characteristics of a powerful agricultural country, follow the general laws of agricultural modernization, and reflect China’s characteristics based on the national conditions.

Tang Renjian believes that the connotation of an agricultural power is very rich, including both the development of productive forces and the transformation of production relations; It includes not only the all-round upgrading of agriculture, but also the all-round progress of rural areas and the all-round development of farmers. On the one hand, we must have the common characteristics of a strong agricultural country. Although foreign modern agricultural powers have different resource endowments and institutional environments, and the performance of agricultural powers is also different, they have some common characteristics.We should follow the general laws of agricultural modernization., find gaps, fill shortcomings, promote advantages, and buildStrong supply guarantee, strong scientific and technological equipment, strong management system, strong industrial toughness and strong competitiveness.A powerful agricultural country. On the other hand, we should reflect the characteristics of China based on the national conditions. It is the key to cultivate crops and feed them, to stress water and soil in agriculture, and to build an agricultural power according to the national conditions and agricultural conditions and to solve practical problems by relying on our own strength. our countryThe resource endowment with a large population and little land, the historical background of farming civilization, and the requirements of the times for harmonious coexistence between man and nature.These three aspects determine us.We must rely on our own strength to secure the rice bowl, rely on the two-tier management system to develop agriculture, develop ecological low-carbon agriculture, continue farming civilization, and solidly promote common prosperity.. These reflect us.The characteristics of China, the national conditions and agricultural conditions of China., toStrive to embark on a road of agricultural modernization with China characteristics.

Building a strong agricultural country is a long-term task and systematic project, so we should pay attention to ways and means and grasp the timing and efficiency. First, accurately understand the work layout of agriculture, countryside and farmers. Building a strong agricultural country is in the same strain as comprehensively promoting rural revitalization, with the same goal and unified process. At present, we should focus on promoting rural revitalization in an all-round way, do a good job in connecting the policy system with the work system, keep the focus unchanged, change the theme, adjust the channels, and maintain the continuity of work. The second is to strengthen overall planning. Pay close attention to the study and formulation of plans to accelerate the construction of a strong agricultural country, and make overall planning and systematic arrangements.Connecting with the existing planning, we can’t make another set completely., clear road map construction drawing, solid and powerful, both convergence and innovation, do a good job in such a plan. The third is to highlight the actual results. Focus on solving the problemThe development of local agriculture and rural areas is the most urgent, and farmers have the strongest reaction.Practical problems ofIn fact, it falls into one specific livelihood fact, even including some.Key trivial matterIn fact, it has been a long time to make the peasants feel a real sense of gain, happiness and security in the process of rural revitalization.

In recent years, cycling has increasingly become the endorsement of people’s pursuit of freedom and health. However, these pursuits often conflict with the complexity of the real environment.

On August 11 this year, a father in Hebei rode with his child. After the child fell, he was crushed by the opposite vehicle and died unfortunately. On September 15th, a mainland woman unfortunately lost control and fell while riding on Lantau Island in Hong Kong, and was crushed to death by an oncoming tourist bus.

These accidents reflect the potential safety hazards faced by cyclists when they enjoy sports and explore the scenery, and also make us think deeply, how can we find a balance between freedom and safety in cycling?

Behind the craze, cycling accidents continue to increase.

The concept of cycling is no stranger. Different from the bicycle culture full of pragmatism in China in 1970s and 1980s,Nowadays, cycling has developed into a highly respected sport.

According to the "Survey Bulletin of National Fitness Activities in 2020" issued by the National Physical Fitness Monitoring Center, cycling is one of the main sports for adults in China, and the proportion of women is higher.

The rise of cycling groups and cycling activities makes cycling add social attributes to sports. Yaya, who has participated in cycling activities for many times, told us: "Riding has made me make many different friends, and I enjoy this free state." Health, relaxation, pursuit of freedom, social interaction … Riding itself has been given more meaning, and it has also become a personalized choice for people to pursue self-expression at present.

With more and more people participating in cycling, especially in complex scenes such as cities and traffic roads, the number of cycling accidents is also increasing.According to statistics, in recent years, the incidence of bicycle traffic accidents in China has been increasing, and the number of injuries and deaths has also been rising.

The recent cycling accidents have also pushed cycling to the forefront and exposed its potential safety risks.

Multiple factors are superimposed, and the hidden dangers of riding safety are highlighted.

Behind the frequent cycling accidents, there are many factors, such as environment, man-made and equipment.

In the feedback about riding risks from the People’s Daily Online leaders’ message board,Inappropriate road conditions and the lack of dedicated cycling lanes are important factors affecting riding safety.Dahai is the founder of the bicycle organization in China Renmin University. In his view, the road conditions have a great influence on riding safety. The smooth roads in some cities are one of the reasons for the rising cycling fever. In other cities, there are many bumps in the downtown roads, which are easy to cause riding safety hazards and make people flinch.

The smoothness, width and visibility of the road surface all play an important role in riding safety, but some roads lack special bicycle lanes, so cyclists usually need to share narrow roads with motor vehicles, which increases the risk of collision. The sea also tells us that electric bicycles, as a common means of transportation, are numerous, and their irregular driving has caused great safety pressure to cyclists. At present, the domestic electric vehicle management is relatively loose, which makes this problem more prominent.

In addition to the imperfect cycling infrastructure, there are often contradictions between cyclists and other road users. We coded and analyzed 988 comments under the four most typical posts on the theme of "Riding to Quit" in Xiaohongshu, looking for a spit point. In the comments, the opinion on "too fast" is the biggest. Others mostly focus on cyclists’ behaviors that do not obey traffic rules, such as occupying roads, running lights, retrograde, etc. Some people are worried about cyclists’ lack of professional knowledge and safety equipment.

For mature cycling groups, experience, equipment and professional knowledge seem to be no longer a problem. There are many cyclists in the G318 Sichuan-Tibet line, including many large and small motorcades. Xiaojin, who once rode the line, said that this kind of cycling group usually has experienced riders as the "head car" and "tail car". The "head car" will observe the situation ahead in advance and give tips in the way agreed by the team when encountering special circumstances such as uneven road surface or about to turn. They are usually well-equipped, such as preparing lighting facilities to deal with the situation of entering dark sections such as tunnels. The leadership of experienced people, full preparation and orderly management all add a safety guarantee to cycling.

However, the popularity of modern high-performance bicycles makes many cyclists have a higher pursuit of speed. The control ability of cyclists in high-speed state is weakened, and the reaction time of judging and dealing with emergencies is greatly shortened. More importantly, riding accidents caused by high speed have greater impact and more fatal damage to cyclists.

When talking about the riding accident in Hebei, Xiaojin said: "The reaction speed and strength of children are still different from those of adults. His father may treat him as an adult."

From the unfinished construction roads in Hebei to the winding mountain roads in Hong Kong,When cycling becomes a contest between high-speed sports and complex road conditions, the imbalance of safety becomes particularly obvious.

How to ensure riding safety within the rules?

In practice,Some bicycles can easily ride at a speed of more than 30 kilometers per hour, and the speed can even reach 50 kilometers per hour when going downhill.[1]. This has far exceeded China’s regulations that the maximum speed of electric bicycles in non-motor vehicle lanes should not exceed 15 kilometers per hour.

Compared with electric bicycles, China’s "Regulations on the Implementation of Road Traffic Safety Law"(hereinafter referred to as the regulations)The regulations on cycling are relatively broad, and there is no clear regulation on the speed of cycling and whether it is necessary to wear a helmet. However, the regulations stipulate the minimum age for cycling, the lanes that can be driven and how to borrow roads in an orderly manner. At the same time, there are clear prohibitions on traction, climbing and parallel chasing.

At the same time, some cities in China also put forward management measures for racing cycling. On July 25, 2024, the Beijing Municipal Public Security Traffic Management Bureau issued a message to strictly investigate the "racing" behavior of cyclists on urban roads. Since August, 2023 illegal behaviors of non-motor vehicles chasing and racing have been punished on the spot.[2]. In March, Chengdu issued the Measures for the Management of Greenway Riding in Chengdu’s Ecological Zone around the City.(Provisional)",clearly stipulates the" greenway speed limit ",and requires that the warning sign of safe riding speed should be set according to the principle that the maximum speed of high-risk sections and crowded areas is not more than 15km/h, and the maximum speed of other sections is not more than 20 km/h.[3].

In terms of helmet wearing, some foreign cities have legislative provisions. For example, at present, 22 states in the United States and Washington, D.C. have legislation on wearing helmets when riding bicycles, mostly to protect the safety of young cyclists.[4]. The laws of Sydney and New South Wales in Australia require all cyclists to wear helmets that meet the standards, and wear and fasten them firmly to ensure the safety of cyclists.[5].

Abiding by the rules and ensuring safety are the principles that everyone should jointly safeguard. Failure to take appropriate riding methods should be disciplined and reminded, and even worse, bear relevant responsibilities.At present, some uncivilized and even illegal cases have brought negative effects to normal cycling exercise groups, leading to the public’s stereotype and stigma of cycling groups. Within the scope of the rules, cyclists should not be looked at and questioned as a separate group.

Whether it is legislation, infrastructure or public awareness, cycling needs to be better embraced and accepted.But at the personal level, civilized riding is still the premise of ensuring safety, and it is also the responsibility of every rider to himself and others.

To this end, we have also compiled a cycling tip, hoping that every cyclist can always enjoy peace while pursuing freedom.

Note: At the request of the interviewee, Yaya, Dahai and Xiaojin are all pseudonyms.

References:

[1] Beijing News. (2024). Racing groups rush lights and ride friends, please take it easy and get acquainted with the city experience officer. https://www.bjnews.com.cn/detail/1724307395129793.html.

[2] Shangguan News. (2024). Beijing strictly investigates cycling racing, and public roads can’t tolerate "violent riding groups" rampaging. https://export.sheobserver.com/baijiahao/html/790329.html.

[3] The Paper. (2024) The frequent accidents of urban cycling groups have attracted attention, and police in many places have rectified the chaos of "violent riding". https://m.thepaper.cn/newsdetail _ forward _ 28421377

[4]IIHS HLDI.(2024).Bicycle helmet use laws.https://www.iihs.org/topics/pedestrians-and-bicyclists/bicycle-helmet-use-laws-table

[5]NSW Government.(2024).Wearing the right cycling safety gear.https://www.nsw.gov.au/driving-boating-and-transport/roads-safety-and-rules/bicycle-safety-and-rules/wearing-right-gear

　　CCTV News:A few days ago, the Publicity and Education Center of the Ministry of Environmental Protection and the Beijing Environmental Protection Publicity Center jointly exposed the "Top Ten Smog Rumors of 2016". Let’s see which rumors once made you believe!

　　Rumor: Beijing smog in macro lens?

　　A video of Beijing smog shot with a 4000 lumen light macro lens is shocking. In the video, some small particles are floating around, which is really scary to watch. Many netizens have said that masks that have been suspected before must be worn this time, and some netizens commented that "this kind of air will kill people." The video has been forwarded by nearly ten thousand people.

　　truth Fog droplets and fine particles that form smog are invisible to the naked eye, so it is necessary to use microscope instruments. What the video sees is just dust.

　　Proverbs 2 Automobile exhaust is 10 times cleaner than air, and the contribution of motor vehicles to smog is not so great.

　　In a video from a car website, on a heavily polluted day, a person wearing a gas mask extended the air quality detector to the exhaust pipe of a car, and the reading of PM2.5 dropped from nearly 500 to 48. It is concluded that automobile exhaust is 10 times cleaner than the air in foggy days.

　　truth Most of the contribution of automobile exhaust to pm2.5 is indirectly generated. The exhaust contains substances such as nitrogen oxides and volatile organic compounds (VOCs), which are gases and will not be reflected in the air quality tester for measuring PM2.5.. However, these gases are both "raw materials" and "catalysts" for PM2.5 production. Among the local pollution sources in Beijing, the contribution of pollutants emitted by motor vehicles to PM2.5 is 31.1%, which accounts for 40% in non-heating season. Organic matters, nitrates, sulfates and ammonium salts generated by secondary conversion account for 70% of PM2.5.

　　Proverbs 3: A red warning was issued because of the presence of ammonium sulfate in the smog?

　　In mid-December 2016, Huanghuai and other places in North China suffered from a wide range of smog weather. Under the shadow of persistent smog, some rumors began to breed on the Internet. A message widely circulated on the Internet said, "Internally, this smog mainly contains ammonium sulfate, which was not the level of red warning, but it only reached this level because of the existence of ammonium sulfate. Remind the children not to go out. The purifier at home is turned on for a long time. Drink more water. It turned out that ammonium sulfate exceeded the standard in London, and many people died without protection. "

△ On December 16, 2016, Beijing launched a red warning of heavy pollution.

　　truth According to the "Emergency Plan for Heavy Air Pollution in Beijing", the red warning is to predict serious pollution for four consecutive days or more, of which two days will reach serious pollution; Or the single-day air quality index (AQI) reaches 500. Ammonium sulfate is not the standard for issuing a red warning.

　　The paper "From London Fog to China Haze: Persistent Sulfate Formation from London Fog to Chinese Haze" published in the Proceedings of the National Academy of Sciences in the United States in late November pointed out that in China, agricultural nitrogen fertilizer and industrial emissions produce a large amount of ammonia pollution, and alkaline ammonia promotes the reaction process of sulfur dioxide and nitrogen oxides, forming a large amount of ammonium sulfate, but also neutralizes the acidic environment, making China smog neutral in pH value.

　　Although the neutral pH of smog in China doesn’t mean that smog in China is harmless, it doesn’t have as strong acute toxicity as acidic fog in London. The acute toxicity of ammonium sulfate is not great, and the deadly culprit of London fog is high concentration of sulfur dioxide.

　　Rumor has it that the four wind power stations and shelterbelts block the smog caused by strong winds?

　　Some people think that a large number of wind power stations have been built in Inner Mongolia to steal the strong wind in Beijing, and the three-north shelterbelt attenuates the wind in the north, resulting in smog that cannot be blown away.

　　truth The wind can recover when it hits an obstacle, and local wind power generation or local shelter forest will not affect the downstream wind power far away. The fundamental reason for the formation of fog and haze is that the ground pollutants hit the static condition of the atmosphere. At present, no scientific research shows that there is a causal relationship between wind farms or shelterbelts and the formation of smog.

　　Proverbs five smog is because of "nuclear pollution".

　　It is said that large-scale uranium and coal resources have been found underground in Erdos, Inner Mongolia. Through burning, uranium in coal enters the air, which is the reason for the large-scale smog in China at present.

　　truth The main influencing factor of smog is meteorological conditions. Uranium itself is a very heavy element, which is not easy to be oxidized and will not become dust; Moreover, the power plant will carry out dust removal, desulfurization and denitrification on the emissions, even if they really exist, they should also be left in the combustion residue, and the amount entering the air is very small.

　　Rumor 6 "coal to gas" aggravates air pollution in Beijing?

　　An article entitled "Smoke emission from natural gas boilers is an important reason for aggravating the haze weather in Beijing" said that smoke emission from natural gas boilers is the main source of "rich water vapor" in Beijing and an "accomplice" to aggravate the haze air. The article says that the development of natural gas in Beijing is a double-edged sword, which has the clean energy side, the negative influence of water vapor emission and the pollution of nitrogen oxides.

　　truth Wang Zifa, a researcher at the Institute of Atmospheric Physics, Chinese Academy of Sciences, said that according to the current natural gas consumption in China, the gaseous water produced by burning natural gas is about 300 million tons every year. If all of it is converted into liquid water (in fact, it is impossible to convert all of it into liquid water), it will be spread evenly in the eastern part of the country where the population is concentrated (estimated area is about 3.6 million square kilometers), and the thickness of liquid water is less than 0.1 mm/year, accounting for only one hundred thousand of the precipitable water in the atmosphere, with little impact. Therefore, "changing coal to gas" will not significantly increase the humidity in Beijing’s atmosphere, and it is not the main source of "rich water vapor" in Beijing.

　　Professor Feng Yinchang of Nankai University said that no matter burning coal, gas or oil, nitrogen oxides will be emitted. Whether "changing coal to gas" will lead to the increase of nitrogen oxides mainly depends on the combustion mode and quality of coal before changing gas and the combustion technology adopted after changing gas. If low-nitrogen combustion technology is adopted, the emission of nitrogen oxides will be reduced. Denitrification started later than desulfurization in China, and the concentration of nitrogen oxides in the atmospheric environment has not decreased as significantly as that of sulfur dioxide in recent years. The increase of nitrogen oxide concentration may cause secondary pollution, but it is controllable. Moreover, the causes and mechanism of pollution are very complicated. It is not scientific to say that the pollution of particulate matter is still serious because the concentration of nitrogen oxides has not decreased significantly.

　　Proverbs 7: Beijing’s air quality is gradually deteriorating?

　　Some people think that the smog is frequent now, and the air quality in Beijing is not improving but deteriorating.

△ On December 30, 2016, Beijing was shrouded in smog.

　　truth According to the monitoring data of the Ministry of Environmental Protection, as of December 27, 2016, the average concentration of PM2.5 in Beijing in 2016 was 72 μ g/m3, down 10.0% year-on-year (down 8 μ g/m3) and down 20% compared with 2013 (down 18 μ g/m3). The assessment report "The Course of Air Pollution Control in Beijing: 1998-2013" issued by the United Nations Environment Programme in 2016 shows that from 1998 to 2013, the average annual concentrations of sulfur dioxide (SO2), nitrogen dioxide (NO2) and inhalable particulate matter (PM10) in Beijing decreased significantly by 78%, 24% and 43% respectively, and the air quality in Beijing has been improved in the past 15 years. In addition, the monitoring data of international organizations such as NASA in the United States also support the trend of continuous improvement of air quality in Beijing.

　　Proverbs 8 smog can only wait for the wind, and emergency measures for heavy pollution are useless.

　　There is a view that the smog in Beijing can only wait for the wind, and the measures that took so much effort to implement during the period of heavy pollution did not play a role in driving away the smog.

△ On December 23, 2016, Beijing ushered in the blue sky after smog.

　　truth The function of heavy pollution emergency is to reduce pollutant discharge and pollutant accumulation as much as possible through certain emergency emission reduction measures, so as to protect public health to the maximum extent. According to professional calculations, during the Red Police this year, PM2.5 was reduced by about 23% and other pollutants were reduced by about 30% on average compared with no measures. Haze is caused by pollutants discharged by human production and life exceeding the environmental capacity under certain meteorological conditions. Only by reducing the emission intensity of pollutants through corresponding control measures can the air pollution problem be fundamentally solved, which requires a long-term process.

　　Proverb 9 Beijing is seriously polluted by smog, and the air contains antibiotic-resistant bacteria.

　　On November 23, 2016, four scholars from the Research Center for Antibiotic Resistance of the University of Gothenburg in Sweden mentioned in their research that "the antibiotic resistance gene was detected from the smog in Beijing". Subsequently, some domestic WeChat WeChat official account published the title "Breathing Pain! Drug-resistant bacteria are found in smog in Beijing and other places, and more than 60 kinds of drug-resistant bacteria in smog in Beijing will lead to drug failure. On November 24, 2016, some media released a news titled "Drug-resistant bacteria were found in Beijing smog, and" the last antibiotic of mankind "could do nothing about it". The news was reprinted and commented by a large number of media and self-media on the 25th.

　　truth The Beijing Municipal Health Planning Commission responded that the drug resistance and pathogenicity of bacteria are completely different concepts, and the increase of drug resistance does not mean the enhancement of pathogenicity. Many experts at home and abroad said that bacterial drug resistance has nothing to do with smog, smog does not produce drug-resistant genes, and smog has no necessary causal relationship with drug-resistant bacteria. The acquisition of bacterial drug resistance is caused by evolutionary selection and induced selection of antibiotics, not by smog. The hazard factors in smog are mainly chemical pollutants, which have adverse health effects on respiratory system and cardiovascular system, and the health risks caused by microorganisms are very small.

　　Proverbs 10 smog blocks alveoli? The incidence of lung cancer in Beijing is much higher than that in the whole country, showing a younger trend, and air pollution is the culprit.

　　There is no doubt that smog affects health, but some opinions circulating on the Internet are varied: the incidence of lung cancer in Beijing is much higher than that in the whole country, showing a younger trend, and air pollution is the culprit? Can 80 PM2.5 particles block an alveolus? Will smog make fresh lungs turn black for six days? Smoking smog for a day may lead to hemiplegia? Can smog lead to infertility? Smog makes people lose their lives for five and a half years?

　　truth In response to these questions, Academician Zhong Nanshan once said that "many data about smog carcinogenesis are taken out of context, exaggerated or tampered with".

　　In fact, from 2003 to 2012, excluding the aging factor, the average annual growth rate of lung cancer in Beijing was 1.2%. In 2011, the age-standardized incidence rate of lung cancer in Beijing was 23.53/100,000, while the latest standardized incidence rate of lung cancer in China was 25.34/100,000. It can be seen that the incidence rate of lung cancer in Beijing was slightly lower than the national average. The median age of lung cancer in Beijing in 2011 was 71 years old, which increased by 2 years compared with the median age of 69 years in 2002. It can be seen that the incidence of lung cancer in Beijing is not younger. Others, such as "80 PM2.5 particles can block an alveoli?" Will smog make fresh lungs turn black for six days? Smoking smog for a day may lead to hemiplegia? Can smog lead to infertility? Smog makes people lose their lives for five and a half years? " Such rumors, without scientific basis, have been confirmed as rumors by relevant authorities.

　　NASA

　　Pluto, once "Laojiu", has now been "reduced" to a dwarf planet.

　　Our reporter Gao Bo

　　Not long ago, two foreign astronomers put forward a bold idea: the ninth planet in the solar system, which is "hidden from time to time", is likely to be an original black hole.

　　There is a black hole in the solar system that controls distant celestial bodies? Some experts said that this is an interesting hypothesis, but it is difficult to confirm or falsify with the current observation ability.

　　The vacant throne, there are new contenders.

　　More than a decade ago, who was the ninth planet was clearly written in the textbook. In 1930, clyde tombaugh discovered PLUTO, equating it with Uranus and Neptune, giving it the magnificent Greek name "Prouteau", and the nine planets in the solar system became a kind of common sense knowledge.

　　However, scientists later realized that Pluto seems to be "far from enough to see" in the outer space of the solar system. Since 1992, some distant ice-stone structures have been discovered one after another, and their volume is similar to Pluto. In 2005, it was discovered that the planet Eris was 27% more massive than Pluto! Pluto can be counted as the ninth largest, and it’s unreasonable that Venus doesn’t rank tenth.

　　Astronomers made a decisive decision, and the 26th International Astronomical Union held in August, 2006 passed a resolution: Pluto was classified as a dwarf planet and removed from the nine planets in the solar system. Prouteau abdicated tragically and became an asteroid 134340.

　　But the throne of the ninth planet is not so easy to cancel. In recent five years, some new discoveries have led people to speculate that there may be a real "P9" (the ninth largest planet) in the solar system.

　　On September 24th, another newcomer joined the battle for the throne — — ArXiv.org posted a paper, and Jakub Scholtz of Durham University in Britain and James Unwin of the University of Illinois in the United States put forward a bold idea: the ninth planet in the solar system may be an original black hole.

　　Strange orbit, pointing to the hidden "P9"

　　Around 2014, astronomers discovered some celestial bodies in the Kuiper Belt (the area near the ecliptic plane outside Neptune’s orbit). When the orbit is far from the sun, it can reach hundreds of astronomical units (one astronomical unit is the distance between the sun and the earth). At first, this was explained as the gravitational scattering effect of Neptune. But soon, the conjecture of the new ninth planet was put forward.

　　In 2016, michael brown of California Institute of Technology and his colleagues discovered that six celestial bodies in the Kuiper Belt have strange orbits, and their perihelions all point in the same direction. It’s like six clocks that turn at different speeds, but the hands all point in the same direction. If Neptune was behind the scenes, their directions would have been scattered and not so concentrated.

　　Moreover, when the six celestial bodies are closest to the sun, the distance is more than 40 astronomical units, and the Neptune hypothesis is not easy to explain.

　　Michael brown and his colleagues calculated that the probability of "big guys pointing to accidental coincidence" is 0.007%— — It is more realistic to believe that there is a "big guy who has not yet appeared".

　　Zhou Liyong, an astronomer and professor at Nanjing University, said in an interview with Science and Technology Daily that many people opposed the existence of "P9" at first. With the continuous discovery in recent years, the statistical significance of confirming the existence of the ninth largest planet has gradually increased.

　　Although "P9" has not been observed, some people have speculated its parameters through computer simulation: it is 200 to 800 astronomical units away from the sun, and its mass is 5-mdash that of the earth; Ten times, it takes 30,000 years to circle the sun … …

　　It is not necessarily the earth that wanders, but it may also be a black hole.

　　Astronomers used to believe that the possibility of a new planet outside Neptune is very small, because the material in this area is too thin, and it takes too long to grow a big planet. But what if the solar system "plundered" a ready-made planet from the vast universe? This possibility is worth considering.

　　"In fact, there may be many wandering planets in the universe, just like in the movie ‘ Wandering earth ’ Same. " Xie Jiwei, an astronomer who studies extrasolar planets and an associate professor at Nanjing University, told the Science and Technology Daily reporter that one way to find extrasolar planets is called gravitational microlensing method, which is to capture the weak deformation of images — — The light is distorted by the mass of a celestial body along the way to find clues about the existence of exoplanets. In this way, we have observed many "clues", indicating that there are many "tramps" who are unorganized and undisciplined in the unknown darkness.

　　In the suspected area of "P9", the gravitational anomaly was observed in the optical gravitational lens experiment (OGLE). At least six gravitational microlensing events indicate the gravity anomaly in this area, suggesting the existence of a free-floating celestial body with a mass range of 5-mdash; Between 15 earth masses. The conjecture of "P9" is therefore encouraged.

　　The new paper by Schultz and Unwin speculates that this celestial body may not be a rogue planets, but a wandering black hole. It was drawn into the group by the solar system, which disturbed the orbit of the outer celestial bodies.

　　Generally speaking, black holes observed by astronomers are gathered after the death and collapse of stars. The original black hole that exists in the theoretical assumption is another matter. Hawking made a great contribution to this concept: it was a "cultural relic" that came into being shortly after BIGBANG.

　　The universe before the Big Bang was called the primordial universe by astronomers. The explosion of the original universe was uneven, and the energy density in the local space was too high. Without collapsing, it was compressed into points with infinite mass and surrounding black holes. This kind of black hole varies in size, and it may be as small as a particle. The general primary black hole is similar in mass to the common asteroids in the solar system.

　　These black holes then drift around the universe. Some are dissipated by Hawking radiation and melted like ice; Others absorb substances and grow, and survive to this day.

　　Schultz and Unwin pointed out that the abnormal orbits of celestial bodies outside Neptune, as well as some gravitational events, can be explained by the original black hole whose mass is several times that of the earth; An original black hole may be captured by the solar system and become the ninth planet; They proved that the possibility of this capture is worth considering.

　　Strict assumptions, there are still many voices of opposition.

　　"The idea of this paper is still very rigorous and standardized, not a guess." Xie Jiwei said, "but the author also said that this is only a possibility. Introducing the concept of black hole may be interesting and strange to everyone. But the next step is still impossible. Moreover, whether there is the ninth largest planet is still a problem. "

　　Schultz and Unwin said that if "P9" is an original black hole, it may pass through the peripheral "halo" — — The positive and negative electrons in the outer layer of a black hole annihilate the light to determine its existence. However, a planetary scientist told the Science and Technology Daily reporter that such observation is difficult to achieve because the black hole is small and uncertain in its location.

　　"I personally don’t like the idea of the original black hole." An expert engaged in planetary research told the Science and Technology Daily reporter, "It feels almost mystical — — Can explain some phenomena, but basically never see it. "

　　"The discoverer of Kuiper objects, David Jewitt, didn’t even believe in ‘ The ninth planet ’ The existence of. " The expert said that David Jewett said in a TV interview that he didn’t think "P9" existed. He believes that the black hole hypothesis reveals that scientists are eager to make "major discoveries". But this theory is far from the stage of verification.

　　An important reason for different opinions is that it is still difficult to observe celestial bodies outside Neptune at the current level of human technology. Although humans have observed thousands of extrasolar planets.

　　"I don’t know the true face of Lushan Mountain, but I am only in this mountain." Xie Jiwei said, "Observing exoplanets basically infers the situation of planets indirectly by observing the Ling Xing effect or Doppler effect of star spectra. The planets in the solar system can be directly observed. The brightness of a planet is inversely proportional to its distance from the sun. Celestial bodies that are too far away will receive weak light and reflect weaker light. "

　　The periphery is so vast and the celestial bodies are so dim. Beyond hundreds of astronomical units, it is still unknown.

　　Xie Jiwei said: "Many celestial bodies on the edge of the solar system were seen through the Hubble telescope; After the Weber telescope works, our observation level will improve a little. "

　　

Liu Xiaokai

　　　　　 Liu Xiaokai, male, Miao nationality, born in March 1962, is a native of Taijiang, Guizhou Province. He joined the work in September 1983 and joined the Communist Party of China (CPC) in April 1985. He holds a postgraduate degree from the Central Party School and is an engineer.

　　1978.10 Studying welding in department of mechanical engineering, Tsinghua University.

　　In September, 1983, he successively served as the technician of design room, deputy director of steam drum workshop, deputy director of factory office, deputy director of total quality management office and secretary of the Communist Youth League Committee of Guizhou Boiler Factory.

　　1987.06 Deputy Director, Technical Innovation Section, Qiandongnan Economic Commission, Guizhou Province

　　1989.01 Chief, Enterprise Management Section, Qiandongnan Economic Commission, Guizhou Province, and deputy stationmaster of Guizhou New Technology Extension Station.

　　1991.08 Deputy Director of the Economic Commission of Qiandongnan Prefecture, Guizhou Province (during the period: from July 1992 to December 1992, he was appointed as Deputy Secretary of Leishan County Committee of Guizhou Province)

　　1992.12 Secretary of Jianhe County Committee, Guizhou Province (during this period: studied in the youth class of the Central Party School from September 1994 to July 1995)

　　1996.01 Deputy Secretary of Guizhou Provincial Committee of the Communist Youth League, member of the Party Group

　　(1994.09-1997.01, majoring in the history of the Communist Party of China in the on-the-job postgraduate class of the Central Party School)

　　1997.06 Deputy Secretary of Guizhou Qiandongnan State Committee

　　1998.03 Deputy Secretary, Deputy Governor and Acting Governor of Qiandongnan Prefecture Committee of Guizhou Province

　　1998.04 Deputy Secretary and Governor of Qiandongnan Prefecture Committee of Guizhou Province

　　2005.02 Deputy Secretary, Deputy Governor and Acting Governor of Qiannan Prefecture Committee of Guizhou Province

　　2005.03 Deputy Secretary and Governor of Qiannan Prefecture Committee of Guizhou Province

　　2006.11 Secretary of Bijie Prefecture Committee of Guizhou Province, First Secretary of Party Committee of Bijie Military Division

　　2008.01 Vice Governor of Guizhou Province, Member of the Party Group of the Provincial Government, Secretary of Bijie Prefecture Committee, First Secretary of the Party Committee of Bijie Military Division

　　2008.05 Vice Governor of Guizhou Province and Member of the Party Group of the Provincial Government

　　2012.04 Member of the Standing Committee of Guizhou Provincial Party Committee, Vice Governor and Party Group of the Provincial Government

　　2012.07 Member of the Standing Committee of Guizhou Provincial Party Committee and Minister of United Front Work Department

　　2018.01 Chairman of Guizhou Provincial Political Consultative Conference, Standing Committee of Provincial Party Committee and Minister of United Front Work Department

　　Alternate member of the 17th Central Committee, alternate member of the 18th Central Committee, alternate member of the 19th Central Committee at the Fifth Plenary Session of the 18th Central Committee. Member of the 12th Chinese People’s Political Consultative Conference, member of the 9th, 10th, 11th and 12th Guizhou Provincial Committee.

　　(People’s Network information as of January 2018)

Opinions of the General Office of Hunan Provincial People’s Government on the Implementation of Several Provisions on the Safety Management of Residents’ Self-built Houses in Hunan Province

Xiang Zheng Ban Fa [2023] No.7

The people’s governments of cities, counties and cities, the provincial government departments and commissions, and the directly affiliated institutions:

　　"Several Provisions on the Safety Management of Residents’ Self-built Houses in Hunan Province" (hereinafter referred to as "Several Provisions") was adopted at the 34th meeting of the Standing Committee of the 13th People’s Congress of Hunan Province on November 23, 2022, and shall come into force on January 1, 2023. In order to do a good job in the implementation of the "Several Provisions", this opinion is formulated with the consent of the provincial people’s government.

　　I. General requirements

　　We will fully implement the spirit of the 20th Party Congress and the important instructions of the General Secretary of the Supreme Leader on safety in production, especially the safety of residents’ self-built houses, coordinate development and safety, strictly implement the responsibility of territorial management, strengthen the responsibility of departmental guidance and supervision, compact the main responsibility of those responsible for housing use safety, establish and improve the working system of coordinated joint control, full chain control and closed-loop control, promote the normal and long-term safety management of residents’ self-built houses, and effectively protect the safety of people’s lives and property.

　　Second, the main task

　　(A) to strengthen land planning and construction management

　　1. Strict planning and control. Strictly implement the land and space planning, and basically complete the planning of towns and villages before the end of 2023 to achieve full coverage of village planning; Strengthen the preparation and implementation of detailed planning, clarify the controlling indicators such as land use scope, height and number of floors, strictly implement the provisions that "no new residents’ self-built houses shall be built within the current construction land of cities and counties" and "no new residents’ self-built houses shall generally exceed three floors", and strengthen the control over the number of floors and height of residents’ self-built houses. (Responsible unit: Provincial Department of Natural Resources, people’s governments of cities, counties and cities. The following shall be the responsibility of the people’s governments of cities, counties and cities, and will not be listed)

　　2. Improve site selection and land use approval services. Carry out risk investigation in areas prone to geological disasters, and formulate risk zoning and control measures; Guide the rational delineation of the scope of construction land, and strengthen the approval of land use and planning for new construction, renovation (expansion) construction and reconstruction of residents’ self-built houses; Guide the Township People’s Government to do a good job in issuing the approval letter of rural homestead. (Responsible units: Provincial Department of Natural Resources and Provincial Department of Agriculture and Rural Affairs. Involving multiple provincial units, each unit is responsible for the division of responsibilities, the same below).

　　3. Standardize construction approval and supervision. City, state, county and city people’s governments, township people’s governments and sub-district offices shall strengthen the capacity building of residents’ self-built housing safety supervision, and clarify the supervision institutions and personnel. For self-built houses built by residents with three floors or above, if the project investment is more than 300,000 yuan or the construction area is more than 300 square meters (referred to as "self-built houses built by residents above the quota"), the new construction, renovation (expansion) construction and reconstruction shall go through the procedures of construction drawing review, quality and safety supervision, construction permit, completion acceptance and filing according to law, and the county-level housing and urban construction departments shall strengthen daily supervision; Other residents’ self-built houses (hereinafter referred to as "self-built houses for residents below the quota") shall be supervised by the county-level housing and urban-rural construction departments to the township people’s governments and sub-district offices for quality and safety, and random checks shall be conducted according to a certain proportion. The provincial housing and urban-rural construction department shall formulate the management measures for the completion and acceptance of residents’ self-built houses below the "quota" before June 30, 2023, and guide the quality and safety acceptance of residents’ self-built houses in the province. Implement the system of permanent signs embedded in residents’ self-built houses, and implement the main responsibilities related to housing quality and safety. (Responsible unit: Provincial Department of Housing and Urban-Rural Development)

　　4. Do a good job in information sharing of residents’ self-built houses. Township People’s governments and sub-district offices shall timely send a copy of the construction information of each new building, renovation (expansion) building and reconstruction of residents’ self-built houses to the departments of county-level natural resources, urban and rural housing construction, agriculture and rural areas, urban management and comprehensive law enforcement, and form an information sharing and linkage supervision mechanism. (Responsible units: Provincial Department of Natural Resources, Provincial Department of Housing and Urban-Rural Development, Provincial Department of Agriculture and Rural Affairs)

　　(two) strict management of self-built houses for residents.

　　5. Strengthen the management and control of the business format and number of self-built houses for operating residents. Standardize the relevant certification materials submitted for the registration of residents’ self-built houses as the main residence (business premises) of the market. At the time of registration, the owner of the self-built house who uses the self-built house as the main residence (business premises) of the market needs to submit a certificate of ownership of the residence (business premises) and a letter of commitment that each self-built house has no more than three business formats, and is responsible for the authenticity and legality of the materials. The registration authority shall conduct a formal review. The provincial market supervision department introduced the supporting system and management measures for residents’ self-built houses to be converted into business purposes. The municipal and state market supervision, education, public security, commerce, culture and tourism, health and health, emergency management, civil affairs and other departments, in accordance with the relevant provisions of the province, differentiated different business formats to formulate control standards for the number of self-built houses for operating residents, and guided and urged all localities to complete the adjustment of residents’ self-built houses that did not meet the requirements of business formats and numbers before June 30, 2025. (Responsible units: Provincial Market Supervision Bureau, Provincial Education Department, Provincial Public Security Department, Provincial Department of Commerce, Provincial Department of Culture and Tourism, Provincial Health and Wellness Commission, Provincial Emergency Department and Provincial Civil Affairs Department)

　　6. Strengthen the fire safety management of self-built houses for operating residents. Improve the relevant provisions and technical standards for fire safety management of self-built houses for operating residents, guide and strengthen the fire safety management of self-built houses for operating residents and those with changed use purposes, and urge the implementation of provisions such as the use of fire and electricity, the configuration and maintenance of fire-fighting facilities and equipment, safe evacuation and fire separation, and shall not occupy or block evacuation passages and safety exits. According to the law to carry out the fire design review and acceptance of residents’ self-built houses, and do a good job in daily fire inspection and fire rescue. (Responsible units: Provincial Fire Rescue Corps, Provincial Department of Housing and Urban-Rural Development, Provincial Public Security Department and Provincial Market Supervision Bureau)

　　7. Carry out insurance services for residents’ self-built houses. We will develop insurance products for the safety management of residents’ self-built houses, and encourage those responsible for the use of self-built houses to purchase housing safety insurance. (Responsible unit: Hunan Banking Insurance Regulatory Bureau)

　　(3) Strengthen the management of safety appraisal of residents’ self-built houses.

　　8. Strictly regulate the situation of house safety appraisal. Establish and improve the safety appraisal system for residents’ self-built houses. If houses with obvious subsidence, cracks, inclination and corrosion are found in the safety investigation and rectification, houses damaged due to natural disasters, fires, explosions and other accidents, and houses with other obvious safety hazards endanger public safety, the Township People’s Government and sub-district offices shall urge those responsible for housing use safety to entrust appraisal institutions to conduct safety appraisal. Engaged in catering, accommodation, entertainment, education and training, pension and other personnel-intensive business activities, the responsible person for the safe use of residents’ self-built houses shall obtain the certificate of housing safety appraisal that conforms to the requirements of the business format or the relevant certification materials for the completion acceptance after the renovation (expansion) and reconstruction according to the requirements of the business format, and the relevant information shall be included in the housing safety clear card and posted in a prominent position; County-level market supervision and management, education, public security, commerce, culture and tourism, health, emergency management, civil affairs and other departments shall conduct supervision and inspection according to laws and regulations. (Responsible units: Provincial Department of Housing and Urban-Rural Development, Provincial Market Supervision Bureau, Provincial Department of Education, Provincial Public Security Department, Provincial Department of Commerce, Provincial Department of Culture and Tourism, Provincial Health and Wellness Committee, Provincial Emergency Department and Provincial Civil Affairs Department)

　　9 clear housing safety appraisal institutions. Provincial Housing and Urban-Rural Construction Department shall improve the normative documents of housing safety appraisal management in a timely manner in accordance with the relevant provisions of the Ministry of Housing and Urban-Rural Development, and the housing and urban-rural construction departments of cities and prefectures shall, before June 30, 2023, combine local conditions, and report the list of institutions with independent legal personality, corresponding professional technicians and professional equipment and facilities engaged in housing safety appraisal to the provincial housing and urban-rural construction department for the record, and make it public for public inquiry. (Responsible unit: Provincial Department of Housing and Urban-Rural Development)

　　10. Compacting the responsibility of housing safety appraisal institutions. City and county housing and urban-rural construction departments should strengthen supervision and inspection of the authenticity and accuracy of appraisal reports, and city and county market supervision departments should standardize the charging behavior of housing safety appraisal institutions, and severely investigate and deal with acts of issuing false appraisal reports and charging fees in violation of laws and regulations according to law. The appraisal institution shall deliver the appraisal report to the client in time and report to the township people’s government, neighborhood offices and county-level housing and urban-rural construction departments where the house is located; If there is a danger of collapse, the appraisal institution shall immediately inform the client and immediately report to the township people’s government, street offices and county-level housing and urban-rural construction departments where the house is located. Township people’s governments and sub-district offices shall, according to the appraisal report, promptly issue a notice to urge the people to solve the crisis or take emergency measures, and urge those responsible for the safety of housing use to take measures to solve the crisis. (Responsible unit: Provincial Department of Housing and Urban-Rural Development, Provincial Market Supervision Bureau)

　　(4) Strengthen the investigation and rectification of hidden dangers of residents’ self-built houses.

　　11. Highlight the key points of investigation and rectification. The people’s governments of provinces, cities, counties and cities shall establish and improve the working mechanism for the investigation and rectification of safety risks of residents’ self-built houses. County and urban people’s governments should guide and urge township people’s governments and sub-district offices to conduct a comprehensive investigation on key areas such as urban-rural fringe, villages in cities, resettlement areas, schools and hospitals, industrial parks, tourist attractions, and geological disaster-prone areas, and strengthen daily inspections, highlighting the inspection of key contents such as structural safety, operational safety, fire safety, and legal compliance of construction. (Responsible units: Provincial Department of Housing and Urban-Rural Development, Provincial Market Supervision Bureau, Provincial Fire and Rescue Corps, Provincial Department of Natural Resources)

　　12. Improve the effect of investigation and rectification. The investigation activities should involve professional organizations and personnel, and the government can purchase services where conditions permit. The municipal housing and urban-rural construction department shall establish an expert database for investigation and rectification, and make selection and dynamic adjustment from professionals such as design, construction and testing of universities and enterprises. County-level housing and urban-rural construction departments shall guide and urge the Township People’s governments and street offices to put forward written opinions to the person responsible for the safety of housing use in a timely manner if there are potential safety hazards in the houses found in the investigation and daily inspections; If it is found that there are obvious security risks that endanger public safety, it shall immediately take emergency measures and establish a ledger for investigation and rectification work until the hidden dangers of housing safety are eliminated. (Responsible unit: Provincial Department of Housing and Urban-Rural Development, Provincial Department of Finance)

　　13. The safety management responsibility of the person responsible for the use of compacted houses. According to the principle of "who owns the house is responsible, who uses it is responsible", the owner of residents’ self-built houses is the person responsible for the safety of housing use; If the owner of the house is inconsistent with the user of the house, the owner and the user of the house shall bear the responsibility for the safety of the use of the house in accordance with the agreement. If there is no agreement or the agreement is unclear, the owner of the house shall bear the responsibility for the safety of the use of the house; If the owner of the house is missing or the ownership of the house is unclear, the township people’s government and the street office shall make it clear that the user or manager of the house shall bear the responsibility for the safety of the use of the house. County-level natural resources, housing and urban-rural construction, market supervision, fire rescue, agriculture and rural areas and other departments should guide and urge the township people’s governments and sub-district offices under their jurisdiction to strengthen safety education and training on the site selection, planning, design, construction, use and operation of residents’ self-built houses, and implement the main responsibility of those responsible for housing use safety. Township people’s government, street offices to supervise and guide the use of housing safety responsible person in accordance with the planning purposes, design requirements for rational use, decoration of housing; Do not change the use function of the house, add stories or demolish the main load-bearing structure of the house without authorization; Conduct daily safety inspection, maintenance and repair of houses, and eliminate potential safety hazards in time; Ensure the fire safety of houses; Found that there are serious security risks, should promptly report to the village (neighborhood) committees, and take emergency measures such as suspending use, evacuating people, and setting warning signs; According to the written handling opinions put forward by the notice of danger relief,Take measures such as maintenance and reinforcement, immediate cessation of use, and demolition. (Responsible units: Provincial Department of Natural Resources, Provincial Department of Housing and Urban-Rural Development, Provincial Market Supervision Bureau, Provincial Fire and Rescue Corps, Provincial Department of Agriculture and Rural Affairs, Provincial Department of Education, Provincial Public Security Department, Provincial Department of Commerce, Provincial Department of Culture and Tourism, Provincial Health and Wellness Committee, Provincial Emergency Department and Provincial Civil Affairs Department)

　　(five) to strengthen the supervision of law enforcement in the whole process of residents’ self-built houses.

　　14. Strictly implement the department’s law enforcement responsibilities. Self-built houses built by residents who have not obtained the construction project planning permit shall be handled by the urban management and comprehensive law enforcement departments of the people’s governments of cities and counties according to law. Residents who have not built their own houses in accordance with the provisions of the construction project planning permit shall be ordered by the competent department of urban and rural planning of the people’s government of the city or county to stop construction and handed over to the urban management and comprehensive law enforcement departments of the people’s government of the city or county for handling according to law. Residents who have not obtained the rural construction planning permit according to law or have not built their own houses in accordance with the provisions of the rural construction planning permit shall be dealt with by the township people’s government according to law. New construction, renovation (expansion) construction and reconstruction of self-built houses above the "quota" have handled the construction project planning permit or issued the rural construction planning permit, but failed to handle the procedures of construction drawing review, quality and safety supervision, construction permit, completion acceptance and filing according to law, which shall be handled by the county-level housing and urban-rural construction department. In the process of use, if the main load-bearing structure of the house is added or demolished without authorization, the residents’ self-built houses within the scope of the construction project planning permit shall be handled by the urban management and comprehensive law enforcement departments of the people’s governments of cities and counties, and the residents’ self-built houses within the scope of the rural construction planning permit shall be handled by the township people’s governments. Failing to entrust a housing safety appraisal agency to conduct safety appraisal according to law, residents’ self-built houses within the scope of handling construction project planning permits shall be handled by the county-level housing and urban-rural construction departments, and residents’ self-built houses within the scope of issuing rural construction planning permits shall be handled by the Township People’s Government. (Responsible unit: Provincial Department of Natural Resources and Provincial Department of Housing and Urban-Rural Development)

　　15 clear administrative licensing and administrative punishment delegated matters. The whole process of administrative law enforcement supervision shall be implemented for newly built, renovated (expanded), rebuilt and converted into self-built houses for business purposes. The Township People’s Government shall implement the relevant administrative penalties for the safety management of residents’ self-built houses in charge of the relevant competent departments of the people’s governments at the county level; According to the entrustment of the relevant competent departments of the people’s government at the county level, the relevant administrative license for the safety management of residents’ self-built houses shall be implemented. The relevant competent departments of the people’s governments at the county level may, according to the actual situation, entrust the street offices with the relevant administrative penalties and administrative licenses for the safety management of residents’ self-built houses. The relevant departments of the people’s government at the county level shall publish the list of matters entrusted by administrative licensing and administrative punishment before June 30, 2023. (Responsible units: Provincial Department of Natural Resources, Provincial Department of Housing and Urban-Rural Development, Provincial Market Supervision Bureau, Provincial Fire and Rescue Corps, Provincial Department of Agriculture and Rural Affairs, Provincial Department of Education, Provincial Public Security Department, Provincial Department of Commerce, Provincial Department of Culture and Tourism, Provincial Health and Wellness Committee, Provincial Emergency Department and Provincial Civil Affairs Department)

　　16 highlight the key points of law enforcement of residents’ self-built houses. Strengthen law enforcement, standardize law enforcement procedures, and focus on strengthening law enforcement supervision over the following acts: construction and use without obtaining or in accordance with the approval, planning permission, construction permit and business license of land and homestead; Adding stories or demolishing the main load-bearing structure of the house without authorization during use; Failing to entrust a housing safety appraisal institution to conduct safety appraisal according to law; The safety appraisal institution issues a false appraisal report; Engaged in personnel-intensive business activities without obtaining the certificate of housing safety appraisal that conforms to the requirements of business format or the relevant certification materials for the completion acceptance after the renovation (expansion) and reconstruction according to the requirements of business format; Residents above the "quota" did not adopt fire separation measures according to relevant standards, the number of evacuation passages and safety exits was insufficient, and electric vehicles were not parked and charged according to relevant regulations. Improve the benchmark system of administrative penalty discretion, so as to enforce the law strictly and in a civilized way. (Responsible units: Provincial Department of Natural Resources, Provincial Department of Agriculture and Rural Affairs, Provincial Department of Housing and Urban-Rural Development, Provincial Market Supervision Bureau, Provincial Fire and Rescue Corps, Provincial Department of Education, Provincial Public Security Department, Provincial Department of Commerce, Provincial Department of Culture and Tourism, Provincial Health and Wellness Committee, Provincial Emergency Department and Provincial Civil Affairs Department)

　　17. Give play to the role of reporting rewards and punishments and grassroots organizations. The people’s governments at the county level shall establish and improve the complaint, report and reward mechanism for acts endangering the safety of houses and dangerous houses, and publish the complaint and report methods, processing procedures and time limits. The specific reward methods and standards shall be formulated by the people’s governments at the city, state and county levels. Township people’s governments and sub-district offices shall guide and urge the village (neighborhood) committees to actively assist in the safety supervision and management of the construction and use of self-built houses by residents, and assist in the investigation and rectification; Incorporate the relevant provisions on the safe construction and use of residents’ self-built houses into the village regulations and residents’ conventions, promptly discourage illegal construction and other acts that endanger safety, and report to the township people’s government and sub-district offices.

　　(six) to strengthen the information management of residents’ self-built houses.

　　18 to establish a comprehensive management information system for residents’ self-built houses in the province. Adhere to the combination of long and short, prioritize, adopt the way of overall planning and phased construction, deeply integrate the data of investigation, approval and supervision of residents’ self-built houses in the province, establish a full-scale database of residents’ self-built houses in the province, integrate the business processes of relevant functional departments in the whole life cycle supervision of residents’ self-built houses, establish a one-yard house management system, and build a unified comprehensive management platform for residents’ self-built houses in the province to realize intelligent supervision of full-scale houses. (Responsible units: Provincial Department of Housing and Urban-Rural Development, Provincial Development and Reform Commission, Provincial Department of Finance, Provincial Department of Natural Resources, Provincial Department of Agriculture and Rural Affairs, Provincial Market Supervision Bureau, Provincial Fire and Rescue Corps, Provincial Government Affairs Bureau, Provincial Education Department, Provincial Public Security Department, Provincial Department of Commerce, Provincial Department of Culture and Tourism, Provincial Health and Wellness Committee, Provincial Emergency Department and Provincial Civil Affairs Department)

　　19. Promote data collection and sharing exchange. Relying on the comprehensive management platform of residents’ self-built houses, timely collect the basic information of houses, hidden dangers investigation, rectification of sales numbers, construction approval, daily safety supervision, public services and other data, carry out big data analysis and application, and provide data sharing application services to governments at all levels and industry authorities through the government data sharing exchange platform. (Responsible units: Provincial Department of Housing and Urban-Rural Development, Provincial Department of Natural Resources, Provincial Department of Agriculture and Rural Affairs, Provincial Market Supervision Bureau, Provincial Fire and Rescue Corps, Provincial Government Affairs Bureau, Provincial Education Department, Provincial Public Security Department, Provincial Department of Commerce, Provincial Department of Culture and Tourism, Provincial Health and Wellness Committee, Provincial Emergency Department, Provincial Civil Affairs Department, Provincial Government Services and Big Data Center)

　　20. Improve the public service system for residents to build their own houses. Relying on the comprehensive management platform of residents’ self-built houses, government portals and departmental government websites, timely release necessary management information such as residents’ self-built houses construction, safety early warning, renovation of dangerous houses, operation and use, provide service information such as building knowledge, policies and regulations, free atlas, and building craftsmen, and establish channels such as complaints and reports of violations of laws and regulations, self-inspection and reporting of potential safety hazards, information disclosure and information inquiry, so as to realize government leadership, property owners (users) subject, professional and technical support. (Responsible units: Provincial Department of Housing and Urban-Rural Development, Provincial Department of Natural Resources, Provincial Department of Agriculture and Rural Affairs, Provincial Market Supervision Bureau, Provincial Fire and Rescue Corps, Provincial Government Affairs Bureau, Provincial Department of Education, Provincial Public Security Department, Provincial Department of Commerce, Provincial Department of Culture and Tourism, Provincial Health and Wellness Committee, Provincial Emergency Department and Provincial Civil Affairs Department)

　　Third, safeguard measures

　　(1) Strengthen organizational leadership. The provincial leading group for the special rectification of the safety of self-built houses is responsible for coordinating the safety management of self-built houses by residents in the province, further refining the tasks according to the needs, implementing the safety management responsibilities, and strengthening the supervision and guidance on the safety investigation and rectification of self-built houses by residents in the province; The office of the leading group (located in the Provincial Department of Housing and Urban-Rural Development) should strengthen the work tracking and scheduling, and cooperate with relevant provincial departments to do a good job in daily work. The people’s governments of cities, counties and urban areas should establish and improve the coordination and linkage mechanism for the safety management of residents’ self-built houses, establish a normal and long-term system for the safety investigation, review and spot check of residents’ self-built houses, clarify the institutions and personnel for the safety management of houses in cities and counties, and ensure the funds for safety management according to regulations; Township people’s governments and sub-district offices shall establish and improve the system of housing safety administrators and grid dynamic management, and carry out regular investigations.

　　(2) Compaction responsibility. All departments at all levels should follow the requirements of "three management and three necessities", implement the territorial responsibility and industry sector supervision responsibility of residents’ self-built housing safety management, and accelerate the formulation and implementation of supporting systems and measures in light of the main tasks specified in the "Several Provisions" and the requirements of this opinion. It is necessary to strengthen communication and coordination, cooperate closely, form a joint force, strengthen information sharing, data interconnection and departmental linkage law enforcement, and ensure that the whole process of safety management of residents’ self-built houses and the supervision of all links are not disjointed and absent.

　　(3) Strengthen supervision and inspection. The people’s governments of cities, prefectures, counties and cities and the relevant departments at the provincial level should list the implementation of the "Several Provisions" as a key task, incorporate the safety management of residents’ self-built houses into the special assessment of safety production of lower-level governments and relevant functional departments, strengthen daily supervision and assessment, and ensure full implementation. The clues about the violation of discipline and law by the relevant responsible personnel shall be transferred to the relevant authorities for handling according to the cadre management authority.

　　General Office of Hunan Provincial People’s Government

　　February 24, 2023

　　(This piece is made public voluntarily)

Cctv newsOn April 19th, "News Network" reported that the agricultural and rural economy made a steady start in the first quarter, the foreign trade made a steady start in the first quarter, and emerging markets remained dynamic … … With the intensive release of positive signals, China’s high-quality economic development has a long way to go.

　　The agriculture and rural economy started steadily in the first quarter.

　　The State Council Press Office held a press conference on April 19th. The relevant person in charge of the Ministry of Agriculture and Rural Affairs said that since the beginning of this year, China’s agricultural and rural economy has maintained a good momentum of development.

　　This year, the intended planting area of grain reached more than 1.78 billion mu, an increase over the previous year. Effectively deal with the freezing rain and snow and cold wave weather last winter and this spring, and strengthen technical guidance services. Winter wheat grows better than last year and all the year round, and the foundation for a bumper harvest of grain and oil production in summer is gradually laid down, and spring ploughing production is vigorously and orderly promoted. The supply of "vegetable basket" products is abundant, the production capacity of pigs is adjusted and optimized, the production of meat, eggs and milk is increased in an all-round way, and the supply of vegetables and fruits is stable.

　　Rural industries have a good momentum of development. In the first quarter, the added value of agricultural and sideline food processing industries above designated size increased by 3.3% year-on-year. Rural leisure tourism continues to heat up, and e-commerce of agricultural products grows rapidly. The per capita disposable income of rural residents reached 6,596 yuan, 2.4 percentage points higher than that of urban residents.

　　Rural construction and governance have been solidly promoted. By the end of March, the county-level rural construction project library had accumulated 614,000 projects and implemented project funds of 250.74 billion yuan.

　　Multi-measures to promote sustained recovery of consumption and promote high-level opening up.

　　At the press conference held by the State Council Information Office on April 19th, the relevant person in charge of the Ministry of Commerce said that in the first quarter, foreign trade made a steady start, emerging markets maintained vitality, and developed markets recovered. A survey of key foreign trade enterprises by the Ministry of Commerce shows that enterprises reflecting employment growth accounted for 1-mdash in March; In February, it rose by 1.7 percentage points to 88.8%, and the confidence expectation of enterprises was further enhanced.

　　Foreign investment maintained steady development. In the first quarter, non-financial foreign direct investment was 242.92 billion yuan, up by 12.5%, among which investment in ASEAN and EU grew rapidly, with growth rates of 36.7% and 34.5% respectively.

　　In the next step, the Ministry of Commerce will focus on promoting the continuous expansion of consumption, launch a series of activities around the theme of "Enjoy the benefits of the whole people throughout the year", focus on the cultivation and construction of international consumption center cities and the construction of modern business circulation system, and continue to introduce relevant policies and measures to continuously release consumption potential.

　　Link the world! The cumulative number of overseas buyers attending the Canton Fair has exceeded 120,000.

　　April 19th is the last day of the first phase of the 135th Canton Fair. During the five-day exhibition period, we felt the "attraction" of the Canton Fair, as well as the "centripetal force" of linking the world with new products and technologies.

　　As of April 18, the cumulative number of overseas buyers attending the meeting offline has exceeded 120,000, an increase of 22.7% over the same period of last year. They come from 212 countries and regions around the world. Not only the number of people has increased, but also the sources are all over the world. The top countries include India, the United States, Nigeria, Indonesia and Malaysia.

The quantity of spring ploughing agricultural materials is generally sufficient and the quality is guaranteed.

On April 19, the relevant person in charge of the Ministry of Agriculture and Rural Affairs said that the consumption of spring ploughing fertilizers, pesticides and seeds accounted for about half of the annual consumption. Judging from the current situation, the number of seeds, pesticides and fertilizers ploughed in spring this year is generally sufficient.

At present, the rate of fertilizer in place at the provincial and county levels has reached 95% and 90% respectively. The quality of agricultural materials is guaranteed and the prices are relatively stable. The prices of most varieties have declined, but they are still at a historical high level. Generally speaking, the supply of agricultural materials is timely, which can meet the needs of spring ploughing production.

　　Water supply will be completed in 2026! The progress of this major water conservancy project benefiting 14 million people is updated.

　　On April 19th, the largest single project of the second phase of the project of diverting water from Han to Wei — — The pylon of Weihe River Pipe Bridge is about to be completely capped, laying a foundation for ensuring that the second phase of the project of diverting water from Han to Wei River will be completed in 2026.

　　The project of diverting water from Han River to Wei River connects the two major water systems of Han River and Wei River, which is one of the 172 major water conservancy projects planned by the country in the 13th Five-Year Plan.

　　The second phase water transmission and distribution project of diverting water from Han to Wei is an important part of the project, which consists of Huangchigou water distribution hub, south trunk line project and north trunk line project, with a total length of 190 kilometers. It undertakes the key task of transporting Hanjiang River water to 21 targets in four key cities, including Xi ‘an, Xianyang, Weinan and Yangling, 11 county-level cities, 1 industrial park and 5 new cities in Xixian New Area on both sides of Weihe River, which is very important for bringing into play the overall benefits of the project.

　　After the completion of the second phase of the project, 1.5 billion cubic meters of water can be transferred from the Han River every year, and a "north-south allocation" water channel has been added to the main skeleton center of the national water network, which plays an important role in realizing the spatial balance of water resources allocation in China and ensuring the high-quality development of economy and society.

In addition, the second phase of the project of diverting water from Han to Wei covers more than 14 million people, which ensures the water supply safety in Xi ‘an, Xianyang, Yangling and Weinan in Guanzhong Plain of Shaanxi Province, and will also greatly solve the contradiction of more water resources in the south and less water resources in the north and provide support for high-quality economic and social development.

　　Ma Jia is a teacher majoring in mathematics in a university in Beijing. This summer, he enrolled his daughter Ma Lu in a 12-day math extracurricular class. "In her daughter’s words, the most difficult questions in the extracurricular class are also simpler than the simplest ones she usually does at school." However, Ma Jia still insisted on letting her daughter go to this extracurricular class. "The mathematics learned at school is too difficult, so let the children find the confidence to do the problem here."

　　Ma Lu is studying in a good middle school, and the second day of junior high school is about to begin. This school is yearning for many parents because of its "difficult study" and "good grades in the senior high school entrance examination".

　　While attending classes in Ma Lu, in the adjacent classroom, Tao Qian, who just finished "Xiaoshengchu", was also attending math classes. "Many parents told me that math in primary schools is too simple. If I don’t study in the summer vacation, I can’t keep up with school." Tao Qian’s mother told the reporter of China Youth Daily and China Youth Network.

　　Same math, different troubles.

　　In fact, the troubles brought by mathematics to Chinese people in these years are by no means just these.

　　A few years ago, at the craziest time of choosing a school in junior high school, Olympiad was the most powerful "weapon" in choosing a school, so that many children were miserable when they learned it.

　　Later, the Olympiad became a "monster" and was banned again and again. Mathematics was also in the voice of reducing the burden and has been reducing the difficulty.

　　What followed was that China students’ scenery in the International Mathematical Olympiad was no longer there, and the champion who had won for many years was lost for four years.

　　Just as people questioned whether the difficulty of mathematics had dropped too much, just after the college entrance examination and senior high school entrance examination this year, there were media reports that the candidates were crying outside the examination room because the questions were too difficult.

　　Is mathematics difficult or easy? Should mathematics be more difficult or easier?

　　Some people say that China’s mathematics education has been swinging in recent years, and this swing seems to be unique to China: when a group of people shout "too easy", we seem to think that mathematics is easy and should be more difficult; When another group of people shouted "It’s too difficult", we seemed to think that mathematics was difficult and were busy reducing the difficulty.

　　On July 12th this year, the Ministry of Science and Technology, the Ministry of Education, the Chinese Academy of Sciences and the Natural Science Foundation of China jointly issued the "Work Plan on Strengthening Mathematical Science Research" (hereinafter referred to as the "Plan"), calling for strengthening mathematical science research and continuously and stably supporting basic mathematical science.

　　It is mentioned in the Plan that the strength of mathematics often affects the strength of a country, and almost all major discoveries are related to the development and progress of mathematics, which has become an indispensable and important support in the fields of aerospace, national defense security, biomedicine, information, energy, ocean, artificial intelligence, advanced manufacturing and so on.

　　The release of the document has played a decisive role in mathematics teaching, and some essential problems should be discussed more fully: how should mathematics education in primary and secondary schools develop? Can the swing from easy to difficult stop? The reporter of China Youth Daily and China Youth Network recently interviewed many experts in the industry, trying to make a more rational analysis of the current mathematics education in primary and secondary schools.

　　"shallow enough to make people want to cry"

　　Primary school mathematics is caught in the form of operation and visualization.

　　"I always emphasize that primary school mathematics must not be too operational and intuitive, and students should learn to think and recall problems." Liu Jiaxia, dean of the School of Primary Education of Beijing Institute of Education, said.

　　At one time, mathematics education in primary and secondary schools in China was famous for its difficulty. Many people may still remember the classic example: when an American adult is asked what 7×8 is, they will be very embarrassed to answer, "I’ll look for a calculator." And the same question, China grade two or three primary school students will basically blurt out.

　　While people are proud of China’s children’s solid mathematical foundation, they are also thinking about how memorizing the multiplication table of 1999 can really help a child’s mathematical study.

　　Some experts pointed out that mathematics learning should go through romantic period, accurate period and comprehensive period, while primary school learning is in romantic period, so that children can play and go to school.

　　As a result, in many places, primary school mathematics has not only increased the content of practical operation, but also the exams in the lower grades of primary schools have become a "music test". Many years ago, the exercises such as oral arithmetic competition and calculating the standard for 100 days have become rare.

　　"But in fact, this ‘ Play and learn ’ It is a higher realm, and the requirements for teachers are higher. " Liu Jiaxia said that not all grades of study must be ‘ Play and learn ’ , and not all knowledge is suitable for ‘ Play and learn ’ . Especially in the middle and senior grades of primary schools, we should not only operate and be intuitive, but also have reasoning, and some rational methods and training should keep up. "Although it is necessary for middle schools to reflect on refining the law after doing the questions, there will be difficulties in the connection of middle schools if there is no relevant training at all in the primary school stage."

　　Not long ago, there was a post on the Internet that caused a heated discussion. A teacher left homework in the parents’ WeChat group, saying: One of the math homework in the evening is hundreds of millions of grains of rice, so parents can urge their students to finish it and take it to school in food bags the next day. The group of parents immediately exploded. Some said, "If one grain counts, it will take a year." Some said, "Is this a brain teaser?" Others asked, "How can I get to school tomorrow?".

　　Although the case of hundreds of millions of grains of rice is too wonderful, the situation of being too formal and operating for the sake of operation can be seen everywhere in today’s primary school mathematics classroom.

　　Teacher Liu Jiaxia introduced that once she went to a division class in primary school. The example given by the teacher in class is 24÷2, which means that 24 is divided into two parts on average. How to divide it? The teacher led the students to divide the sticks, first one by one, then two by two, and then continue to divide them. "If you are a sophomore, this division is still meaningful, but the real difficulty in this class is the vertical division. This division is completely for the sake of division and operation." Liu Jiaxia said that the teacher should directly present: "two bundles of four", two bundles are two tens, and there are four left, and divide the "two bundles of four" equally. At this time, the children should be led to discuss why they should be divided into high positions first (that is, "bundles"), and then the high positions will be divided into low positions.

　　"Elementary school mathematics is so shallow that people want to cry." A primary school math teacher said that sometimes it is even required to teach students no more than two steps to solve problems.

　　Teacher Liu Jiaxia introduced that primary school students often use the "staring method" to solve problems: there is no need to draw pictures, discuss or question, and the answer is unique. There are only two steps at most, and you can know the answer by staring. "In fact, primary school mathematics should be easier to test, but it is slightly more difficult to learn. The difficulty is not to increase the difficulty of knowledge, but to expand students’ knowledge, to be more reasonable, and to tell the stories behind mathematics knowledge." Liu Jiaxia said, but now there is too much emphasis on operation and intuition, which makes many primary school math classes like teachers coaxing children to play.

　　不过有时候也不仅是老师哄着学生玩，学生也哄着老师玩。

　　“我们在实际教学中还有一个矛盾。”北京某小学的数学牛老师说，学习内容虽然简单，但是对老师的课堂教学过程还要求多样化。“我们经常在课堂上问：孩子们谁还有别的方法？谁还有问题？但这其实低估了孩子的智商，学习内容这么简单还能有多少方法？还能提出多少问题？”牛老师说，久而久之，学生们便配合着老师一起演。

　　老师哄着学生、学生哄着老师，学校里的学习氛围变得轻松了，这种轻松既无法满足聪明孩子的求知欲，同时也无法满足中国家长“不输在起跑线上”的期望，于是“不满足”的家长带着“吃不饱”的孩子进了课外班。

　　初一学初二的课程

　　超前学让中学数学陷入刷题的汪洋大海

　　小学阶段的数学太容易了，浪费了学生的智力。那么，中学呢？

　　有人说在中国最苦的学生就是中学生，因此最应该给中学生减负。

　　Many people feel that it is difficult to learn, so the burden is heavy, so to reduce the burden, we should reduce the difficulty. "There is actually no relationship between burden reduction and difficulty." Professor Zhao Xuezhi from the School of Mathematical Sciences of Capital Normal University said.

　　Today, great changes have taken place in the content of mathematics learning, and at the same time, the methods of mathematics have also changed. This change itself may bring a burden to students. "For example, we used to use derivation to do geometry problems, but now we will use vectors." Zhao Xuezhi said that vector has been debated by math teachers since the day it was introduced. Many people think that the introduction of vector destroys the joy that geometry brings to students when they finally draw a wonderful auxiliary line after trying to break their heads. Others regard the introduction of vectors as evidence that mathematics has reduced the difficulty.

　　"In fact, it is difficult to make a simple summary with difficulty." Zhao Xuezhi said that just like walking the same road, people used to walk, but later they changed to take a bus. Originally, walking and taking a bus would not add extra burden to people. But if you go out for a while and then drive back, then go and drive again, the burden will be heavy.

　　Experts pointed out that these problems encountered in the development of mathematics will disappear with the skilled use of tools and methods. In middle school, what really causes students’ heavy burden of mathematics learning is not the difficulty, but the advance — — That is to say, when teachers and students are not ready, they are in a hurry to catch up with the progress, which often causes teachers not to pay attention to the teaching process, while students are eating raw rice.

　　Ma Lu, who started school in Grade Two, began to learn the content of Grade Two in the next semester of Grade One. Ma Lu said that just because what she learned in school was fast and difficult, she had to "return to the furnace" in the extracurricular class during the summer vacation.

　　Learning ahead of time has become a very common phenomenon in middle school mathematics learning.

　　What knowledge is learned at what age is suitable for students’ cognitive characteristics at this stage. Learning ahead means that what they have learned is beyond students’ cognitive ability. In order to let students master knowledge, teachers usually practice a lot.

　　"Let’s take a simple example to see the relationship between learning ahead and the burden." Professor Zhao Xuezhi said that if we teach at an age consistent with students’ cognitive level, we only need to make it clear that 2 is bigger than 1, and then students can draw countless groups of comparisons by analogy. However, if students learn ahead of time, they can’t understand the relationship between comparisons. In order to let students master this knowledge, teachers will let students remember that 2 is bigger than 1, 3 is bigger than 2, and 4 is bigger than 3 … … "Exhausted and remember, this process is a process of massive practice. Can the burden on students be small?"

　　在这个过程中，数学教学培养的是学生的记忆力，而不是推断力。“数学的学习关键是掌握了原理，然后举一反三，而不在于你记住了哪些具体的知识。”赵学志说。

　　但是，在当前的很多中学，中考和高考分数仍然是教学的主要奋斗目标，在这种前提下老师们不是以更多的精力引导学生进行更多的思考，而是总结题型，追求题型的全覆盖，进而把学生扔进刷题的汪洋大海。学生的思辨能力、推理能力自然无法得到很好的训练。

　　今年高考之后，考生们被“难哭了一片”，很多人不禁怀疑：难道数学的难度又要提高了吗？其实，高考数学科目刚刚结束，教育部考试中心的命题专家就指出，2019年的数学试卷，在难度、区分度上都与前两年相当，只是更加强调考查学生的理性思维能力，综合运用数学思维方法分析问题、解决问题的能力。

　　The proposition expert specifically mentioned the Venus that made the candidates "frightened" and pointed out that this question is not to be difficult for students, but to "explore the beauty of the golden section of the human body and integrate aesthetic education into mathematics education." When the candidates calmed down and looked at this "Venus" again, they finally understood that "Venus" was only a narrative way of the topic, and the real mathematical knowledge had probably been learned in the sixth grade of primary school.

　　The difficulty of the college entrance examination has not increased, but the flexibility has increased, and the students who are tired of brushing the questions are at a loss.

　　Many experts pointed out that there is nothing wrong with the reform direction of mathematics education, and there is nothing wrong with reducing students’ burden. The crux of the problem is that professional things have not been entrusted to professional people.

　　An expert said that people will always mention the difficulty coefficient now, but in fact, the difficulty coefficient is an indicator of post-verification, and it is a monitoring indicator for the education management department to maintain the stability of the exam for a long time. "We don’t need to monitor the difficulty coefficient like monitoring blood sugar at all." Zhao Xuezhi said that the whole society and even ordinary people are concerned about talking about this coefficient, which can only increase anxiety, and it is easy to misread the changes of numbers, which in turn leads to unnecessary misunderstanding of mathematics education.

　　An expert suggested that the reform should be handed over to the education management department and teachers should be liberated from daily affairs, so that the mathematics classroom can return to rationality and mathematics can return to its original appearance. (Reporter Fan Weichen)

　　(At the request of the interviewee, Ma Jia, Ma Lu and Tao Qian are all pseudonyms.)