题目内容
This dust comes from the earth and will stay in ________ for ever.
A．the space
B．space
C．spaces
D．a space
Every year there are changes in climate in different parts of the world. Some of these changes are due to natural causes. However, some climate changes are caused by air pollution and these changes may increase.
If the pollution affects the level of carbon dioxide in the atmosphere, the results are likely to be serious. Carbon dioxide has only a small part of the atmosphere. But it has an important function in keeping the balance between radiation from the sun entering the atmosphere and radiation leaving the Earth. Some of the radiation is absorbed by the Earth and some is radiated back into the atmosphere. The carbon dioxide in the atmosphere prevents some of the radiation from leaving the atmosphere. Thus the heat remains in the atmosphere and carbon dioxide helps to prevent the temperature of the Earth from falling.
If the proportion of carbon dioxide in the atmosphere is increased as a result of air pollution, the temperature of the atmosphere may rise. This might cause the ice in the North and the South to melt. If this happened, the sea level could rise and parts of the Earth would be flooded, this happening is not quite likely but the possibility exists.
There is also a fairly strong possibility that the dust level in the atmosphere will rise as a result of industrial pollution. This dust pollution will reflect sunlight back into space. If this happens less sunlight will reach the Earth and the temperature will fall.?
Another danger comes from the destruction of the Earth's vegetation(植物)such as the forests of Brazil, which are being cleared away for farmland and cities. Trees use carbon dioxide and their destruction may upset the balance of carbon dioxide in the atmosphere.
1. The main purpose of this passage is to tell us that_____.
A. the climate of the world is always changing
B. air pollution has greatly affected the climate of the world
C. carbon dioxide has something to do with climate dangers
D. climate of the world is subjected to(使受到)dangers from air pollution
2.From this passage we learn that carbon dioxide_____.
A. helps to prevent the temperature of the Earth from rising
B. keeps much of the sun's radiation from entering the atmosphere
C. plays an important part in keeping the balance of the temperature of the Earth
D. is one of natural causes of climate changes
3.Judging from this passage, if the level of carbon dioxide in the atmosphere went down, the temperature of the Earth would_____.
A. Become higher B. either rise or fall
C. become lower D. neither rise nor fall
4.Which of the following is not the possible serious outcome of air pollution related to climate changes?
A. Parts of the Earth would be flooded one day.
B. Less sunlight would reach the Earth.
C. The temperature of the Earth might rise.
D. The Earth's vegetation might be destroyed.
阅读下面短文，并根据短文的要求答题(请注意问题后的字数要求)
[1]Every year there are changes in climate in different parts of the world．Some of these changes are due to natural causes．However, some climate changes are caused by air pollution and there changes may increase．
[2]If the pollution affects the level of carbon dioxide in the atmosphere, the results are likely to be serious．Carbon dioxide takes up only a small part of the atmosphere．But it performs an important function in keeping the balance between radiation from the sun entering the atmosphere and radiation leaving the Earth．Some radiation is absorbed by the Earth and some is radiated back into the atmosphere．Carbon dioxide in the atmosphere prevent some radiation from leaving the atmosphere．Thus the heat remains in the atmosphere and carbon dioxide help to prevent the temperature．
[3]If the proportion of carbon dioxide in the atmosphere is increased as a result of air pollution, the temperature of the atmosphere may rise．This might cause the ice in the North Pole to melt．If this happened, the sea level could rise and parts of Earth would be flooded．This happening is not quite likely but the possibility exists．
[4]There is also a fairly strong possibility that the level of dust in the atmosphere will rise __________．This dust pollution from industry will reflect sunlight back into space．If this happens, less sunlight will reach the Earth and the temperature will fall．
[5]Another danger comes from the destruction of the Earth’s vegetation such as the forests of Brazil, which are being cleared away for farmland and cities．Trees use carbon dioxide and the destruction may disturb the balance of carbon dioxide in the atmosphere．
1．What is the tile of the passage?(no more than 5 words)
_____________________．
2．Complete the following statement with proper words．(no more than 2 words)
Some __________ can lead to some climate changes in some parts of the world．
3．Fill in the blank in Paragraph 4 with proper words．(no more than 5 words)
4．What important part does carbon dioxide play from this passage?(no more than 10 words)
5．What does the word “it”(line 3, paragraph 2)probably refer to?(no more than 2 words)
第一节：阅读表达（共5小题；每小题2分，满分10分）
阅读下面短文，并根据短文的要求答题（请注意问题后的字数要求）
[1]Every year there are changes in climate in different parts of the world. Some of these changes are due to natural causes. However, some climate changes are caused by air pollution and there changes may increase.
[2]If the pollution affects the level of carbon dioxide in the atmosphere, the results are likely to be serious. Carbon dioxide takes up only a small part of the atmosphere. But it performs an important function in keeping the balance between radiation from the sun entering the atmosphere and radiation leaving the Earth. Some radiation is absorbed by the Earth and some is radiated back into the atmosphere. Carbon dioxide in the atmosphere prevent some radiation from leaving the atmosphere. Thus the heat remains in the atmosphere and carbon dioxide help to prevent the temperature.
[3]If the proportion of carbon dioxide in the atmosphere is increased as a result of air pollution, the temperature of the atmosphere may rise. This might cause the ice in the North Pole to melt. If this happened, the sea level could rise and parts of Earth would be flooded. This happening is not quite likely but the possibility exists.
[4]There is also a fairly strong possibility that the level of dust in the atmosphere will rise _____________________ . This dust pollution from industry will reflect sunlight back into space. If this happens, less sunlight will reach the Earth and the temperature will fall.
[5]Another danger comes from the destruction of the Earth’s vegetation such as the forests of Brazil, which are being cleared away for farmland and cities. Trees use carbon dioxide and the destruction may disturb the balance of carbon dioxide in the atmosphere.
1. What is the tile of the passage?(no more than 5 words)
_____________________________________________________.
2. Complete the following statement with proper words.(no more than 2 words)
Some __________ can lead to some climate changes in some parts of the world.
3. Fill in the blank in Paragraph 4 with proper words.(no more than 5 words)
___________________________________________.
4. What important part does carbon dioxide play from this passage?(no more than 10 words)
_________________________________________________________.
5. What does the word “it”(line 3, paragraph 2) probably refer to?(no more than 2 words)
_____________________________________________.
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