Many people once thought that air pollution had a bad influence upon only the area immediately around large cities with factories and heavy automobile traffic. Today, we know that although these are the areas with the worst air pollution, the problem is nearly worldwide. On several occasions over the past decade, a heavy cloud of air pollution has covered the entire eastern half of the United States and led to health warnings even in rural areas away from any major concentration of factories and automobile traffic. In fact, the very climate of the entire earth may be affected by air pollution. Some scientists feel that the increasing concentration of carbon dioxide( 二氧化碳) in the air resulting from the burning of fossil fuels (coal and oil) is creating a“greenhouse effect” － holding in heat reflected from the earth and raising the world’s average temperature. If this view is correct and the world’s temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be under water.
Another opinion, less widely held, is that increasing tiny substances in the atmosphere are blocking sunlight and lowering the earth’s temperature－a result that would be equally disastrous.A drop of just a few degrees could create something close to new ice age and would make agriculture difficult or impossible in many of our top farming areas. At present we do not know for sure that either of these conditions will happen (though one recent government report prepared by experts in the field concluded that the greenhouse effect is very likely). Perhaps, if we are very lucky, the two tendencies will make up for each other and the world’s temperature will stay about the same as it is now.
1.As pointed out at the beginning of the passage, people used to think that air pollution _____.
A. caused widespread damage in the countryside
B. affected the entire eastern half of the United States
C. almost brought worldwide effect
D. existed merely in urban and industrial areas
2.As far as the greenhouse effect is concerned, the author _____________.
A. shares the same view with the scientists
B. is uncertain of its consequence
C. rejects it as being ungrounded
D. thinks that it will increasingly destroy the world
3. It can be inferred from the passage that ____________.
A. raising the world’s temperature a little would not do much harm to life on earth
B. lowering the world’s temperature a little would lead to agricultural disasters
C. almost no temperature changes have occurred over the past decade
D. the world’s temperature will remain constant in the years to come
4.This passage is primarily concerned with _____________.
A. the greenhouse effect in the world
B. the measures to adjust the climate
C. the potential effect of air pollution
D. the measures to protect the environment
高三英语阅读理解中等难度题
Many people once thought that air pollution had a bad influence upon only the area immediately around large cities with factories and heavy automobile traffic. Today, we know that although these are the areas with the worst air pollution, the problem is nearly worldwide. On several occasions over the past decade, a heavy cloud of air pollution has covered the entire eastern half of the United States and led to health warnings even in rural areas away from any major concentration of factories and automobile traffic. In fact, the very climate of the entire earth may be affected by air pollution. Some scientists feel that the increasing concentration of carbon dioxide( 二氧化碳) in the air resulting from the burning of fossil fuels (coal and oil) is creating a“greenhouse effect” － holding in heat reflected from the earth and raising the world’s average temperature. If this view is correct and the world’s temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be under water.
Another opinion, less widely held, is that increasing tiny substances in the atmosphere are blocking sunlight and lowering the earth’s temperature－a result that would be equally disastrous.A drop of just a few degrees could create something close to new ice age and would make agriculture difficult or impossible in many of our top farming areas. At present we do not know for sure that either of these conditions will happen (though one recent government report prepared by experts in the field concluded that the greenhouse effect is very likely). Perhaps, if we are very lucky, the two tendencies will make up for each other and the world’s temperature will stay about the same as it is now.
1.As pointed out at the beginning of the passage, people used to think that air pollution _____.
A. caused widespread damage in the countryside
B. affected the entire eastern half of the United States
C. almost brought worldwide effect
D. existed merely in urban and industrial areas
2.As far as the greenhouse effect is concerned, the author _____________.
A. shares the same view with the scientists
B. is uncertain of its consequence
C. rejects it as being ungrounded
D. thinks that it will increasingly destroy the world
3. It can be inferred from the passage that ____________.
A. raising the world’s temperature a little would not do much harm to life on earth
B. lowering the world’s temperature a little would lead to agricultural disasters
C. almost no temperature changes have occurred over the past decade
D. the world’s temperature will remain constant in the years to come
4.This passage is primarily concerned with _____________.
A. the greenhouse effect in the world
B. the measures to adjust the climate
C. the potential effect of air pollution
D. the measures to protect the environment
高三英语阅读理解中等难度题查看答案及解析
It was once thought that air pollution affected only the area immediately around large cities with factories and/or heavy automobile traffic. Today, we know that although these are the areas with the worst air pollution, the problem is literally worldwide. On several occasions over the past decade, a heavy cloud of air pollution has covered the entire eastern half of the United States and led to health warnings even in rural areas away from any major concentration of manufacturing and automobile traffic. In fact, the very climate of the entire earth may be affected by air pollution. Some scientists feel that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels(coal and oil) creating a greenhouse effect-holding in heat reflected from the earth and raising the world’s average temperature. If this view is correct and the world’s temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be under water.
Another view, less widely held, is that increasing particulate matter in the atmosphere is blocking sunlight and lowering the earth’s temperature-a result that would be equally disastrous（灾难的）. A drop of just a few degrees could create something close to a new ice age, and would make agriculture difficult or impossible in many of our top farming areas. At present we do riot know for sure that either of these conditions will happen(though one recent government report prepared by experts in the field concluded that the greenhouse effect is very likely). Perhaps, if we very lucky, the two tendencies will offset each other and the world’s temperature will stay about the same as it is now.
1.As pointed out at the beginning of the passage, people used to think that air pollution ______.
A．caused widespread damage in the countryside
B．affected the entire eastern half of the United States
C．almost brought worldwide effect
D．existed merely in urban and industrial areas
2.As far as the greenhouse effect is concerned, the author _____________.
A．shares the same view with the scientists
B．is uncertain of its occurrence
C．rejects it as being ungrounded（无根据的）
D．thinks that it will increasingly destroy the world soon
3.It can be inferred from the passage that________.
A．raising the world’s temperature a little would not do much harm to life on the earth
B．lowering the world’s temperature a little would lead to agricultural disasters
C．almost no temperature variations have occurred over the past decade
D．the world’s temperature will remain stable forever
4.This passage is primarily concerned with________.
A．the greenhouse effect in the world
B．the measures to adjust the climate
C．the potential effect of air pollution
D．the measures to protect the environment
高三英语阅读理解简单题查看答案及解析
It was once thought that air pollution affected only the area immediately around large cities with factories and/or heavy automobile traffic. Today, we know that although these are the areas with the worst air pollution, the problem is literally worldwide. On several occasions over the past decade, a heavy cloud of air pollution has covered the entire eastern half of the United States and led to health warnings even in rural areas away from any major concentration of manufacturing and automobile traffic. In fact, the very climate of the entire earth may be affected by air pollution. Some scientists feel that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels(coal and oil) creating a greenhouse effect-holding in heat reflected from the earth and raising the world’s average temperature. If this view is correct and the world’s temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be under water.
Another view, less widely held, is that increasing particulate matter in the atmosphere is blocking sunlight and lowering the earth’s temperature-a result that would be equally disastrous（灾难的）. A drop of just a few degrees could create something close to a new ice age, and would make agriculture difficult or impossible in many of our top farming areas. At present we do riot know for sure that either of these conditions will happen(though one recent government report prepared by experts in the field concluded that the greenhouse effect is very likely). Perhaps, if we very lucky, the two tendencies will offset each other and the world’s temperature will stay about the same as it is now.
1.As pointed out at the beginning of the passage, people used to think that air pollution ______.
A．caused widespread damage in the countryside
B．affected the entire eastern half of the United States
C．almost brought worldwide effect
D．existed merely in urban and industrial areas
2.As far as the greenhouse effect is concerned, the author _____________.
A．shares the same view with the scientists
B．is uncertain of its occurrence
C．rejects it as being ungrounded（无根据的）
D．thinks that it will increasingly destroy the world soon
3.It can be inferred from the passage that________.
A．raising the world’s temperature a little would not do much harm to life on the earth
B．lowering the world’s temperature a little would lead to agricultural disasters
C．almost no temperature variations have occurred over the past decade
D．the world’s temperature will remain stable forever
4.This passage is primarily concerned with________.
A．the greenhouse effect in the world
B．the measures to adjust the climate
C．the potential effect of air pollution
D．the measures to protect the environment
高三英语阅读理解中等难度题查看答案及解析
It was once thought that air pollution only affected the area immediately around large cities with factories or heavy automobile traffic. Today we know that although these are the areas with the worst air pollution, the problem is actually worldwide. On several occasions over the past ten years, a heavy cloud of air pollution has covered the entire eastern half of the United States and led to health warning even in rural areas away from any major concentration of big factories or automobile. In fact, the very climate of the entire earth may be affected by air pollution. Some scientist feel that the increasing concentration of carbon dioxide in the air resulting from the burning of coal and oil is creating a "green house" effect--holding in heat reflected from the earth and raising the world's average temperature. If this view is correct and the world's temperature is raised only a few degrees, much of the polar ice will disappear and cities, such as New York, Boston, Miami, and New Orleans will be under water.
Another view, less widely held, is that increasing particulate matter (颗粒物质) in the atmosphere is blocking sunlight and lowering the earth's temperature--a result that would be equally disastrous. A drop of just a few degrees could create something close to new ice age and would make agriculture difficult or impossible in many of our top farming areas. At present we do not know for sure that either of these conditions will happen (though one recent government report prepared by experts in this field concluded that the green house effect is very likely). Perhaps, if we are lucky enough, the two trends will offset each other and the world's temperature will stay about the same as it is now.
1.As far as the green house effect is concerned, the author________.
A. shares the same view with the scientist
B. is not sure that it will happen
C. thinks it impossible because there is no strong evidence
D. thinks it will destroy the world soon
2.According to what we read in the passage, ________.
A. raising the world's temperature only a few degrees would do no harm to life on the earth
B. lowering the world's temperatures only a few degrees would lead many major farming areas to disaster
C. the temperature in the countryside will remain permanent in the years to come
D. the particulate matter in the atmosphere has lowered the world's average temperature
3.The word "offset" in the last sentence means________.
A. strengthen B. worsen C. balance D. support
4.This passage is mainly about________.
A. the pollution caused by human beings B. the green house effect
C. the potential effect of air pollution D. the possibility of a new ice age
高三英语阅读理解中等难度题查看答案及解析
Most people are aware that outdoor air pollution can damage their health，but many do not know that indoor air pollution can also have significant health effects.Environmental Protection Agency studies indicate that indoor levels of pollutants may be 3～5 times，and occasionally more than 100 times，higher than outdoor levels.These levels of indoor air pollutants may be of particular concern because most people spend about 90% of their time indoors.
There are many sources of indoor air pollution in any home.These include sources such as oil，gas，coal，wood，and tobacco products，building materials，wet or damp carpet，and furniture made of certain pressed wood products，products for household cleaning and maintenance，personal care，or hobbies，central heating and cooling systems.
Immediate effects may show up after a single exposure (暴露) or repeated exposures.These include irritation of the eyes，nose，and throat，headaches，dizziness.Such immediate effects are usually shortterm and treatable.Sometimes the treatment is simply removing the person’s exposure to the source of the pollution，if it can be identified.
The likelihood of immediate reactions to indoor air pollutants depends on several factors.Age and preexisting medical conditions are two important influences.In other cases，whether a person reacts to a pollutant depends on individual sensitivity，which varies tremendously from person to person.Some people can become sensitized to biological pollutants after repeated exposures，and it appears that some people can become sensitized to chemical pollutants as well.
Certain immediate effects are similar to those from colds or other viral (病毒性的) diseases，so it is often difficult to determine if the symptoms are a result of exposure to indoor air pollution.While pollutants commonly found in indoor air are responsible for many harmful effects，there is considerable uncertainty about what concentrations or periods of exposure are necessary to produce specific health problems.People also react very differently to exposure to indoor air pollutants.Therefore，further research is needed to better understand the effects of indoor air pollution and to find efficient ways to protect our health.
1.According to the first paragraph，which of the following is NOT true?
A．People often fail to notice indoor air pollution.
B．Indoor air pollution sometimes is more dangerous than outdoor air pollution.
C．Outdoor air pollution may not be so serious as indoor air pollution.
D．It is obvious that people have been paying more attention to indoor air pollution.
2.According to the author，which may NOT be the source of indoor air pollution?
A．Building materials. B．Wet carpet.
C．Cooling system. D．Refrigerators.
3. What does the underlined word “irritation” in the third paragraph probably mean?
A．Bad intention. B．Much sensitivity.
C．Injury. D．Carelessness.
4. Which of the following might be the best title for the passage?
A．Reactions of Pollution B．Danger from Home
C．Pollution Resources D．Different Pollutions
高三英语阅读理解中等难度题查看答案及解析
There was one thought that air pollution affected only the area immediately around large cities with factories and heavy automobile traffic. At present, we realize that although these are the areas with the worst air pollution, the problem is literally worldwide. On several occasions over the past decade, a heavy cloud of air pollution has covered the east of the United States and brought health warnings in rural areas away from any major concentration of manufacturing and automobile traffic. In fact, the very climate of the entire earth may be infected by air pollution. Some scientists consider that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels (coal and oil) is creating a “greenhouse effect”— conserving heat reflected from the earth and raising the world’s average temperature. If this view is correct and the world’s temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be in water.
Another view, less widely held, is that increasing particular matter in the atmosphere is blocking sunlight and lowering the earth’s temperature — a result that would be equally disastrous. A drop of just a few degrees could create something close to a new ice age, and would make agriculture difficult or impossible in many of our top farming areas. Today we do not know for sure that either of these conditions will happen (though one recent government report drafted by experts in the field concluded that the greenhouse effect is very possible). Perhaps, if we are lucky enough, the two tendencies will offset each other and the world’s temperature will stay about the same as it is now. Driven by economic profits, people neglect the damage on our environment caused by the “advanced civilization”. Maybe the air pollution is the price the human beings have to pay for their development. But is it really worthwhile?
46. As pointed out at the beginning of the passage, people used to think that air pollution _______.
A. cause widespread damage in the countryside
B. affected the entire eastern half of the United States
C. had damaged effect on health
D. existed merely in urban and industries areas
47. As to the greenhouse effect, the author __________.
A. share the same view with the scientist.
B. is uncertain of its occurrence
C. rejects it as being ungrounded
D. thinks that it will destroy the world soon
48. The word “offset” in the second paragraph could be replaced by _________.
A. slip into B. make up for C. set up D. catch up with
49. It can be concluded that ____________.
A. raising the world’s temperature only a few degrees would not do much harm to life on earth
B. lowering the world’s temperature merely a few degrees would lead major farming areas to disaster
C. almost no temperature variations have occurred over the past decade
D. the world’s temperature will remain constant in the years to come
50. This passage is primarily about __________.
A. the greenhouse effect B. the burning of fossil fuels
C. the potential effect of air pollution D. the likelihood of a new ice age
高三英语阅读理解简单题查看答案及解析
There was one thought that air pollution affected only the area immediately around large cities with factories and heavy traffic．At present, we realize that although these are the areas with the worst air pollution, the problem is really worldwide．On several occasions over the past decade，a heavy cloud of air pollution has covered the east of the United States and brought health warnings in distant areas away from any industrial cities．In fact，the very climate of the entire earth may be infected by air pollution．Some scientists consider that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels(coal and oil)is creating a “greenhouse effect”—— keeping heat reflected from the earth and raising the world’s average temperature．If this view is correct and the world's temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York，Boston，Miami，and New Orleans will be in water．
Another view, less widely held, is that increasing particular matter in the atmosphere is blocking sunlight and lowering the earth’s temperature—a result that would be equally disastrous．A drop of just a few degrees could create something close to a new ice age，and would make agriculture difficult or impossible in many of our top farming areas．Today we do not know for sure that either of these conditions will happen．Perhaps，if we are lucky enough，the two tendencies will offset each other and the world's temperature will stay about the same as it is now．Driven by economic profits, people ignore the damage on our environment caused by the “advanced civilization”．Maybe the air pollution is the price the human beings have to pay for their development．But is it really worth-while?
1.People used to think that air pollution_________ .
A．caused widespread damage in the countryside
B．affected the entire eastern half of the United States
C．had a very bad effect on health
D．existed merely in urban and industrial areas
2.As to the greenhouse effect, the author_________.
A．shares the same view with the scientists．
B．is uncertain of its occurrence
C．rejects it as being ungrounded
D．thinks that it will destroy the world soon
3.The underlined word “offset” in the second paragraph could be replaced by_______.
A．counter-act B．break from C．get along D．communicate
4.This passage is primarily about________ .
A．the greenhouse effect
B．the burning of fossil fuels
C．the potential effect of air pollution
D．the possibility of a new ice age
高三英语阅读理解中等难度题查看答案及解析
---- I’ve had a bad cough recently.
----Me too. I’ve never experienced ______ of air pollution in cities before.
A. an acute problem B. a more acute problem
C. a most acute problem D. the most acute problem
高三英语单项填空困难题查看答案及解析
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
Some people fear that ________ air pollution may bring about changes in ________ weather around the world .
A. / ; the B. the ; / C. an ; the D. the ; a
高三英语单项填空中等难度题查看答案及解析