The air is deadly polluted because some facto...

The air is deadly polluted because some factories don't ________ the rules to protect the environment.

A. appreciate　 　　 B. regard

C. honor　　 　　　　 D. respect

高三英语单项填空简单题查看答案及解析

________there are a large number of chemical factories, the air is likely to be polluted.

A．Where           B．That　　　      C．Though           D．As

高三英语单项填空中等难度题查看答案及解析

Air pollution is one of the hottest topics at present because poor air quality is an important factor in both the incidence and cause of respiratory(呼吸道) diseases.

Zhong Nanshan, a deputy to the NPC and a member of the CAE, said recently when the concentration of PM2.5 rises by 10 micrograms per cubic meter, hospitalization may rise by as much as 3.1 percent. Meanwhile, when the concentration of PM2.5 rises from 25 mgs per cubic meter to 200, the average daily death rate may rise to 11 percent.

Zhi Xiuyi, a leading expert in lung cancer treatment and also vice-president of the CATS, said medical authorities used to focus on tobacco control as a primary means of preventing lung cancer. "But in fact, air pollution is no less harmful than smoking and our research team released a report earlier this year showing that the cancer rate in Beijing is closely related to industrialization," he said.

The report, conducted by the Beijing Institute of Cancer Research, shows that the number of cancer patients in China has increased markedly during the past ten years. Chaoyang District, the city's main area of industrialization, has the highest incidence of cancer, almost double that of Yanqing, an area on the outskirts of the city. About four out of 1000 Chaoyang residents have some form of the disease, with lung cancer at the top of the list.

"The risk of having cancer largely depends on the length of exposure and the concentration of noxious gases(有毒气体的浓度)," said Zhi. In response to the doubt whether seven years' exposure to poor air quality will almost result in cancer, Zhi said the time scale was taken from research overseas that suggested the rate of incidence generally peaked in the seventh year of exposure to a heavily polluted environment.

1. What is the passage mainly about?

A. Medical researches on environment.

B. The disadvantages in big cities.

C. The only reason for the lung cancer.

D. Poor air quality contributing to lung cancer.

2.What can you conclude from the 3rd paragraph?

A. Compared with smoking, air pollution is more harmful.

B. Air pollution is as harmful as smoking.

C. It is very important to prevent people from smoking.

D. People realize the importance of keeping healthy.

3.If there were 3,000,000 people in Chaoyang District, how many would have respiratory diseases?

A. 16000　　　　 B. 12000　　　　 C. 8000　　　　　 D. 7500

4.What can you infer from the passage?

A. Industrialization has its weakness as well as strengths.

B. The average death rate rises with different ages and places.

C. The air in Beijing is much more polluted than that in the other cities.

D. The more heavily-polluted air you breathe in, the sooner you’ll have cancer.

高三英语阅读理解中等难度题查看答案及解析

The pollution is likely to reach its peak on Monday, and some parts ________ heavy air pollution, the environmental watchdog told the newspaper.

A. see　　 B. will see　　 C. would see　　 D. saw

高三英语单项填空中等难度题查看答案及解析

Smog in Europe and North America could be more than 25 times more deadly than the average air pollution found in Chinese cities, a new study suggests. In the largest ever study of its kind in the developing world, researchers tested the effects of air pollution on the health of people in 272 cities in China.

They found average annual exposure to fine particles, known as PM2.5, in those cities was more than five times higher than the level recommended by the World Health Organization (WHO), according to a paper in the American Journal of Respiratory and Critical Care Medicine.

However they also discovered that it was much less likely to increase the death rate than PM2.5 in Europe and North America.

The researchers, led by Dr Maigeng Zhou, of the Chinese Centre for Disease Control and Prevention, suggested this was because China is affected by large amounts of natural dust blown by the wind from arid areas, while most pollution in the West comes from industry.

They found that for every increase of 10 micrograms of air pollution in a cubic meter of air, the mortality rate increased by 0.22 percent, discounting deaths from accidents.

Professor Frank Kelly, an expert in environmental health at King’s College London, who was not involved in the study but has studied air pollution in China, told The Independent: “Those relative risks are considerably less than those seen in Europe and the US. For mortality(死亡率) in Europe we are working on a six percent increase per 10 micrograms.” That suggests air pollution in Europe is about 27 times more toxic than average air pollution in China.

However, Professor Kelly said cities like Beijing, Shanghai and Hong Kong were likely to suffer from Western-style air pollution. "The natural dust component there is not of the magnitude that it would dwarf the coal, biomass and fossil fuel signals,” he said, “That may be true in certain cities whose pollution is not dominated by local power generation or major traffic congestion.”

Natural dust particles can cause physical damage to the lungs and trigger an asthma attack. Particles of carbon produced when fossil fuels are burned can lead to similar problems but they are also coated with toxic heavy metals, chemicals and volatile organic compounds. These are able to pass from the lungs into the blood stream where it is thought they cause further damage to the body.

Areeba Hamid, an air pollution campaigner with environmental group Greenpeace, said: “Poisonous air causes damage to people’s health wherever in the world they live. We now know fumes from diesel(柴油机) vehicles are a lot more poisonous than car companies claimed and this is a big cause of air pollution in Europe and North America. These companies have a lot to answer for, but so far they’ve managed to avoid any real accountability.”

The study of cities in China found the average annual expose to PM2.5 was 56 micrograms per cubic meter, compared to the WHO guideline limit for safe air quality of 10 micrograms.

People who were older than 75, had less education or who lived in hotter places were more likely to die. It is thought people in warmer cities were more likely to spend time outside or leave their windows open, thereby breathing more polluted air, the researchers said. They also speculated that less well educated people might have poorer access to health care or experience poorer environmental health conditions.

1.Why PM2.5 in China is less deadly than that in Europe and North America?

A. China is free from any pollution about PM2.5.

B. Pollutants affecting China mainly come from arid areas.

C. Fewer people died from PM 2.5 in China than those in Europe and North America.

D. Europe and North America are polluted by natural dust.

2.What does the underlined part in Para 7 refer to?

A. The average mortality rate.　　 B. The higher mortality rate.

C. The lower mortality rate.　　 D. The normal mortality rate.

3.What’s the real cause of air pollution in Europe and North America according to Areeba Hamid?

A. Fumes from diesel vehicles are much more poisonous.

B. The environmental agencies can’t take on responsibilities.

C. The technology doesn’t meet the standards.

D. Car companies can’t evaluate the results.

4.The author’s purpose of writing the passage is to ________.

A. appeal to people to lay an emphasis on environmental protection

B. illustrate smog in Europe and North America is quite serious

C. demonstrate China is safest place in the world to live in

D. provide some good ways to address the smog

高三英语阅读理解困难题查看答案及解析

If____________ , the polluted air can result in deadly diseases or even death.

高三英语单项填空简单题查看答案及解析

Half a century ago, parts of the Thames were 　　　 “biologically dead” because of the pollution.

A. declared B. imagined C. sensed D. marked

高三英语单项填空中等难度题查看答案及解析

Outdoor air pollution is an obvious danger because it’s hard to miss.Auto gases, industrial waste, city smog—everyone knows they’re a health hazard(危险) and a call for solutions is on everyone’s lips.But there’s another threat just as perilous— a hidden threat(威胁) we are usually unaware of.We’re speaking about the threat of indoor air pollution.

The dangers caused by indoor air pollution are too often underestimated(低估) and overlooked.According to a recent study, indoor air pollution can be many times higher than outdoor air pollution.A similar study by the Environmental Protection Agency shows that, in general, the air in our homes and offices is two to five times more polluted than outdoor air.

Scientific studies have found that indoor air pollution exacerbates(恶化) the symptoms of asthma(哮喘), and contributes to causing nausea(恶心), headaches and damage to the central nervous system.Evidence has even been found linking poor indoor air quality to certain cancers.Children who spend eighty percent of their time inside are particularly affected by indoor air pollution.

Cigarette smoke, chemical fertilizers(肥料), perfumes and clothing that has been dry-cleaned may contribute to indoor air pollution.Building materials—including paint and glue—are also contributors.

And homes aren’t the only indoor areas affected by this danger.Offices are affected too—sometimes more so—with their copy machines and printers, inks and processing solutions (显影液)and so on.

Fortunately there are many ways to reduce indoor air pollution and improve indoor air quality in your home and office.A major first step would be the use of an air purifier(净化器).

1.What does the underlined word “perilous” mean?

A.Nervous.　 B.Similar.　 C.Obvious.　 D.Dangerous.

2.The author mentions some studies in Paragraph 2 to show indoor air pollution__________.

A.is recently overestimated

B.is very common and serious

C.has drawn people’s attention

D.is linked to many serious diseases

3.Which of the following is the usual contributor of air pollution in our homes?

A.Smoking. 　　　 B.Printing.

C.Copy machines.D.Processing solutions.

7.4.What would be discussed in the paragraph that follows?

A.An introduction to the air purifier.

B.Other dangers of indoor air pollution.

C.Other sources of indoor air pollution.

D.More solutions to the problem of air pollution.

高三英语阅读理解中等难度题查看答案及解析

Because of air pollution being greatly reduced, this city is still ______.

高三英语单项填空中等难度题查看答案及解析

Some of the people often ask the same question　　the air has been polluted.

A. whether    　        B. if            C. that            D. where

高三英语单项填空中等难度题查看答案及解析