㈠ 求空气污染的英语四级作文 air pollution 120个字左右
1.
Air pollution is one of the major problems of the modern world. A great deal of energy is needed to run the factories of modern instrial nations. Automobile, trains, planes and busses need energy, too. Nearly all of this energy is proced by burning fuels. The burning proces wastes, some of which remain in the air, causing air pollution.
Scientists are finding ways to stop air pollution especially in big instrial areas and densely-populated cities. They are studying new ways of generating electricity that may be less damaging to the environment. In the meantime, many power plants are being modernized to give off less polluted material. Also, engineers try to design and locate new power plants to do minimum damage to the environment.
However, it may be that we still have a long way to go before we have a "clean" world. Nearly all of the countries are trying hard to prevent and control air pollution. There indeed seems to be no end to tasks that environmentalists will be required to do. People will continually find new ways to control pollution.
2.
The impact of air pollution on climate
Air pollution is now discussing how they affect climate. The most serious air pollution is generated by burning: the burning of sulfur in coal and oil, will proce sparse oxides; air to participate in high-temperature reaction, will proce nitrogen oxides; will proce incomplete combustion of hydrocarbons and carbon monoxide; while combustion of pyrolysis gasoline, but also release lead; ... .... However, even the cleanest fuel combustion will proce carbon dioxide. Of course, the animal's breathing process, the same release carbon dioxide, and that of carbon dioxide into the atmosphere, about 80% came from breathing, only 20% from fuel combustion. However, the burning destroyed the natural balance of carbon dioxide, so that the concentration of atmospheric carbon dioxide increased year by year, which may cause the "greenhouse effect", so that the earth's rising temperatures.
Turbidity current growth rate of the Earth, or even greater than the concentration of combustion caused by cO2 growth rate, therefore, atmospheric turbidity will influence the Earth's climate can not be ignored. The increase in turbidity over the world there are many reasons, such as fuel consumption increase, fuel increase in agricultural machinery, mechanized farming, and so an increase in Young earth.
In addition to the greenhouse effect and atmospheric turbidity may affect the Earth's climate, other factors such as sunspot activity, etc., to some extent also affect the Earth's climate. Sunspot activity since 1900 are constantly increasing. As the sunspot can increase the amount of solar radiation and thus cause rising temperatures.
The air pollution on the Earth's climate, they are not scientifically conclusive evidence on the. Most of was a bold extrapolation.
㈡ 谁能给推荐一个英语四级关于环境污染危害的文章 危害要列出1、2、3条，不论来路，呵呵，谢谢啦
Air pollution comes from factories, power stations and cars. Chemicals in the smoke from power stations cause a lot of damage. They can travel hundreds of miles in the wind before falling to the ground in the rain. But this "chemical rain" graally destroys trees in the forests and kills fish in the lakes. In Germany, over 50% of the country＇s trees had been damaged by the year 1986.
Time and time again there are serious accidents that pollute the air. In 1986 there was a bad accident at a nuclear power station in Russia. A cloud of radiation crossed the whole of Europe. It is said that 125,000 people died in Russia as a result of illnesses caused by this accident.
In 1984 there was a serious accident at a factory in India and a cloud of dangerous gas covered the town of Bhopal. Over 2,500 people were killed that night, and hundreds of thousands of people were injured. Many of the injured lost their sight.
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Pollution is harmful to human beings. Polluted water causes many kinds of diseases such as diarrhea, enteritis, etc. And sometimes these diseases even take man’s life. Dirty air or air-borne garbage causes stinging eyes and running nose. Pollutants are destructive. They cause runs in nylon stockings and crack rubber tires and they eat away at stone and rust iron.
Measures have been taken to control pollution. In recent years, legislative steps have been introced to control pollution. Rivers are being cleaned. Air is purified, and pollutants are being trapped before they are poured out of chimneys.
However, pollution problems have not been completely solved. Pesticides are widely used almost everywhere. They pollute soil, water and food. They have the power to make our streams fishless and our gardens and woodlands silent and birdless. Some factories are still using air as a mping place for wastes. Some lakes are still dirty. Quite a few chimneys are still pouring smoke into air and noise pollution remains serious.
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Water pollution
Water is very important to us. Factories and plants need water for instrial uses, and large pieces of farmland need it for irrigation. Without water to drink, people die in a short time. Today most water sources are so dirty that people must purify water before drinking. Water becomes dirty in many ways: instrial pollution is one of them. With the development of instry, plants and factories pour tons of instrial wastes into rivers very day. The rivers have become seriously polluted, and the water is becoming unfit for drinking or irrigation. The same thing has also happened to our seas and oceans. So the problem of water pollution is almost worldwide. Scientists of many countries have done a lot of work to stop pollution. The polluted water in some places has become clean and drinkable again. Perhaps one day, the people in all towns and cities will be drinking clean water. That day, we believe, is not very far off
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Air pollution is one of the major problems of the modern world. A great deal of energy is needed to run the factories of modern instrial nations. Automobile, trains, planes and busses need energy, too.
all of this energy is proced by burning fuels. The burning proces wastes, some of which remain in the air, causing air pollution.
Scientists are finding ways to stop air pollution especially in big instrial areas and densely-populated cities. They are studying new ways of generating electricity that may be less damaging to the environment. In the meantime, many power plants are being modernized to give off less polluted material. Also, engineers try to design and locate new power plants to do minimum damage to the environment.
However, it may be that we still have a long way to go before we have a "clean" world. Nearly all of the countries are trying hard to prevent and control air pollution.
There indeed seems to be no end to tasks that environmentalists will be required to do. People will continually find new ways to control pollution
㈢ 关于环境污染的英语问题，5个以上，（要用英语！！）
What does our earth look like?
How is our living environment?
Water pollution：
•Water pollution is the contamination of water bodies such as lakes, rivers, oceans, and groundwater.
Air pollution ：
Air pollution is becoming a severe problem, which mainly caused by transport action and factories proction.
The White pollution （白色污染 指垃圾袋之类）
The global warming 温室效应
Increasing global temperature will cause Melting of glaciers and will change the amount and pattern of precipitation, including an expanse of the subtropical desert regions. Other likely effects include increases in the intensity of extreme weather events.
㈣ 中国环境污染问题 用英语回答
Rivers flowing through cities, 90 percent of the river are affected by serious pollution, 75 percent of lakes nationwide negative nutritional issue ... ... China's increasingly serious environmental pollution problems. This is the State Environmental Protection Administration, Luo Yi, deputy director of science and technology in the eighth CHITEC the development of China's Circular Economy Summit disclosed.
According to Luo, the current red tide in coastal areas in China each year than the last century occurred in the eighties, more than three times more than, the effects of acid rain area has accounted for one third of the land area, urban problems of noise nuisance to the public, the National Land and Water the loss of an area of 3,560,000 square kilometers, less than the total amount of forest resources, ecosystem degradation.
In addition, a century in developed countries, environmental problems that may occur in phases, such as the black-odor water, instrial pollution, at present in China with focus on more than two decades. The mid-nineties of the last century, China's economic growth is two-thirds of the ecological environment in an overdraft on the basis of the 2003 environmental pollution and ecological damage has been caused by the loss of the GDP accounted for about 15 percent.
Luo said that in the future for a period of time, China's economy will be in a positive development and the instrialization era of mass consumption, material goods and consumption of resources will be high speed. Three-step according to China's modernization goals, the country's population in 2020 to 1.46 billion, total economic output will quadruple, according to the current development model and the traditional level of pollution control, China's pollution load than the addition of five to six times , it is necessary to maintain the existing environmental conditions, the environment unit of GDP must decline 72 percent burden, China's environmental protection work is facing more serious challenges.
Luo pointed out that at present, we must continue to rece the unit of output in the consumption of resources on the basis of the maximum to promote recycling of resources to maximize the rection of pollution emissions; through system innovation, comprehensive use of legal and administrative means, combined with the market, the establishment of a resource-saving and environment-friendly city.
㈤ 环境污染的英语资料
Test results with laboratory mice show a direct cause-and-effect link between exposure to fine particle air pollution and the development of atherosclerosis, commonly known as hardening of the arteries. Mice that were fed a high-fat diet and exposed to air with fine particles had 1.5 times more plaque proction than mice fed the same diet and exposed to clean filtered air.
Plaque, a fatty deposit on the inner lining of the blood vessels, can predispose indivials to conditions such as heart attacks and strokes. The fine particle exposure also led to increased inflammation of the artery walls and reced function of the artery wall's inner lining.
The National Institute of Environmental Health Sciences, part of the federal National Institutes of Health, and the U.S. Environmental Protection Agency provided funding to researchers at the Mount Sinai School of Medicine and the New York University School of Medicine for the two-year study. The study results are published in the December 21, 2005 issue of the Journal of the American Medical Association.
The study showed that the combination of fine particle pollution and high-fat diet can promote the development of atherosclerosis, and may explain why people who live in highly polluted areas have a higher risk of heart disease. The findings are also important because the fine particle concentrations used in the study were well within the range of concentrations found in the air around major metropolitan areas.
The researchers did not observe significant differences in plaque proction and artery wall inflammation in fine particle-exposed mice given the normal diet. However, among mice given clean air, those on the high-fat diet had greater plaque proction and artery wall inflammation than those given the normal diet. These results suggest that both diet and fine particle pollution contributed to the development of atherosclerosis in the mice.
"This is one of the first studies to demonstrate measurable changes in plaque proction and artery inflammation following exposure to fine particle matter," said NIEHS Director David A. Schwartz, M.D. "These findings have important implications for the long-term impact of fine particle air pollution on urban populations."
Fine particle pollution consists of microscopic particles of st and soot less than 2.5 microns in diameter – about thirty times smaller than the width of a human hair. These tiny particles primarily come from motor vehicle exhaust, power plant emissions, and other operations that involve the burning of fossil fuels. Fine particles can travel deep into the respiratory tract, recing lung function and worsening conditions such as asthma and bronchitis.
To evaluate the effects of fine particle exposure on cardiovascular health, the researchers used mice that were genetically programmed to develop atherosclerosis at a higher-than-normal rate. Half of the mice were placed on a regular diet, while the remaining half received chow with a high fat and calorie content. Mice from both groups were then exposed to either concentrated air particles or clean, filtered air for 6 hours per day, 5 days per week, for a total of 6 months.
Following the exposures, the researchers measured plaque concentration in the aorta, the largest artery in the body. They found that among mice fed the high-fat diet, those exposed to fine particles had plaque concentrations more than 1.5 times higher than those exposed to clean air. "These results suggest that the fine particle exposure is actually accelerating the development of atherosclerosis in the high-fat group," said Sanjay Rajagopalan, M.D., a vascular medicine specialist and cardiologist with the Mount Sinai School of Medicine and senior author of the study.
Further comparison of the high-fat groups showed that the artery walls of the mice exposed to fine particle pollution were significantly more inflamed than their clean-air counterparts. "We noted a significant increase in the number of inflammatory cells and enzymes in the arteries of the mice exposed to air particles," said Rajagopalan.
In addition, the fine particles had a measurable effect on the ability of the arteries to dilate, an important indicator of artery wall function. "We found that the constrictive effect of certain stress hormones was increased in the arteries of the particle-exposed mice, while the ability of the arteries to dilate was impaired," said Rajagopalan. "This suggests the artery function had been compromised."
According to Rajagopalan, the effects on plaque proction and artery wall inflammation were obtained with relatively low exposure concentrations. "The average particle exposure over the course of the study was 15 micrograms per cubic meter, which is typical of the particle concentrations that urban area residents would be exposed to, and well below the federal air quality standard of 65 micrograms per cubic meter in a 24-hour period," he said.
A number of human population studies have confirmed an association between exposure to airborne particles and an increased risk of cardiovascular disease, particularly among those with underlying risk factors such as hypertension, diabetes, high cholesterol, or prior cardiovascular disease. "These results support the need for additional studies that can identify the underlying mechanisms linking fine particle exposure and atherosclerosis in human populations," said Rajagopalan.
Contact: John Peterson [email protected] 919-541-7860 NIH/National Institute of Environmental Health Sciences
http://www.newstarget.com/020432.html
㈥ 求空气污染的英语四级作文 air pollution
air pollution
air pollution comes from factories, power stations and cars. chemicals in the smoke from power stations cause a lot of damage. they can travel hundreds of miles in the wind before falling to the ground in the rain. but this "chemical rain" graally destroys trees in the forests and kills fish in the lakes. in germany, over 50% of the country's trees had been damaged by the year 1986.
time and time again there are serious accidents that pollute the air. in 1986 there was a bad accident at a nuclear power station in russia. a cloud of radiation crossed the whole of europe. it is said that 125,000 people died in russia as a result of illnesses caused by this accident.
in 1984 there was a serious accident at a factory in india and a cloud of dangerous gas covered the town of bhopal. over 2,500 people were killed that night, and hundreds of thousands of people were injured. many of the injured lost their sight.
[参考译文]
空气污染
空气污染来自工厂、电站和汽车。电站发出的烟雾中所含的化学物质造成很大的破坏。这些化学物质可以随风飘走几百英里，然后才随雨水降落地面。但是这种化学雨逐渐摧毁森林里的树木，杀死湖泊中的鱼。在德国，到1986年止，全国已经有过半数的树木被摧残。
空气被污染的严重事故不时地在发生。1986年俄罗斯一座核电站发生过一起严重事故。一团带有辐射的尘埃穿越了整个欧洲。据说，在俄罗斯有125 000人由于这次事故引起的疾病而死亡。
1984年印度一家工厂发生了一起严重事故，一团有危险的气体笼罩着博帕尔市，当晚就有2 500多人死亡，有成千上万人受伤，受伤者中有许多人双目失明。
㈦ 关于环境污染问题的英语对话
Bonny：We are going to do some research on the pollution of the Pearl River. Do you have any idea about it?
Jason：Since pollution is one of the biggest problems in the world, I’m sure a lot of people are interested in this topic.
Sarah：Polluted water is a great danger to people’s health, so I think our work is very meaningful.
Bonny：And we can visit some factories along the river.
Jason：Good idea, because factories always pollute the environment by pouring waste water directly into rivers.
Bonny：We can also borrow some books on this topic.
Jason and Sarah：OK. Let’s go to the library now.
邦妮：我们将做一些关于珠江污染的研究。你是否有一些关于它的主意？
贾森：由于污染成为世界上最大难题之一。我肯定许多人对这个论题有兴趣。
莎拉：水污染是很损害人们健康的，所以我想我们的工作是很有意义的。
邦妮：我们可以参观一下建在河流旁边的工厂。
贾森：好主意，因为工厂经常排出的废水直接流进河里污染环境。
邦妮：我么也能借一些关于这个论题的书籍。
贾森和莎拉：好的。我们现在就去图书馆。
㈧ 英语口语考试
1、自我介绍：时间为1分钟，要求举止大方、语调自信。 2、考官问答：一般为三道题，由考官提问，学生回答。 3、话题陈述：考生在题库中随机抽取题目，进行叙述。常考的话题有环境污染、气候现象、教育现状等。 拓展资料：高考英语口语考试目前有两种模式，即“人人对话”模式和“人机对话”模式。“人人对话”模式是一种传统考试模式，考官以面对面的形式与考生进行沟通，以判定考生英语口语表达能力。考官根据考生的语音语调、理解能力、表达能力、反应速度四个方面对考生成绩进行考核。考官最后将这四项分数合计为总分。北京、安徽、河北、山东、辽宁等全国大部分地区的高考英语口语考试采取了“人人对话”模式考试。“人机对话”模式，是指由电脑代替英语教师扮演考官的角色，所有考题和指令均由电脑发出，考生根据从耳机中听到的或在电脑屏幕上看到的指令和要求回答问题。计算机会自动将考生在考试中回答问题时所有语音信息进行录音并保存。考生考试的全过程不介入任何人为因素。考试结束后，所有考生的考试录音将被集中，评卷教师按教育部网上阅卷要求进行统一集中评卷。目前我国使用“人机对话”形式高考口试的地区还不多，仅上海、广东、广西等个别地区使用这种模式，各地区设计的题型也不尽相同。（资料来源：网络-高考英语口语）