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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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