Scientists say that something very serious is happening to the earth. It will begin to get?? 1?? in the 1990s. There will be major changes in?? 2?? during the next century. Coastal waters will have a?? 3?? temperature. This will have a?? 4?? effect on agriculture. In northern areas, the?? 5?? season will be ten days?? 6?? by the year 2000. However, in?? 7?? areas, it will be too dry. The?? 8?? of water could decrease by eighty percent. This would?? 9?? a large decrease in? 10?? production.
World temperature could?? 11?? two degrees centigrade by the year 2040. However, the increase could be three times?? 12?? great in the Arctic and Antarctic areas. This could cause the?? 13?? sheets to melt and raise the?? 14?? of the oceans?? 15? one to two metres. Many coastal cities would be?? 16?? water.
Why is this happening? There arc too?? 17?? carbon dioxide (二氧化碳)in the air. 18? oil, gas and coal burn, they create large?? 19?? of carbon dioxide. This carbon dioxide lets?? 20?? enter the Earth's atmosphere and?? 21?? the Earth. However, it doesn't let as much heat?? 22?? the atmosphere and enter space. It's?? 23?? a blanket. The heat?? 24?? the sun can pass through the blanket to warm the Earth. The heat?? 25?? there and can't escape through the blanket again.
Scientists call this the green house effect.
1. A. warmer B. colder C. better D. worse
2. A. land B. live C. climate D. weather
3. A. lower B. higher?????? C. normal?????? D. proper
4. A. good B. general????? C. serious?????? D. useful
5. A. hot B. cold???????? C. autumn????? D. growing
6. A. longer B. shorter? C. busier????? D. more important
7. A. colder B. warmer????? C. higher?????? D. lower
8. A. much B. many?????? C. amount????? D. number
9. A. lead B. keep??????? C. make???????? D. cause
10. A. oil B. industrial??? C. agricultural?? D. coal
11. A. increase B. drop???????? C. lift??????????? D. be
12. A. more B. as?????????? C. much??????? D. less
13. A. water B. rain????????? C. solid????????? D. ice
14. A. degree B. level???????? C. coast???????? D. area
15. A. by B. to?????????? C. of??????????? D. with
16. A. above B. under?????? C. in??????????? D. over
17. A. little B. many??????? C. few????????? D. much
18. A. If B. Because???? C. When??????? D. Why
19. A. amount B. amounts???? C. deal???????? D. quantity
20. A. sunlight B. air?????????? C. carbon dioxide? D. gas
21. A. cold B. protect C. hurt????????? D. heat
22. A. enter B. get C. leave???????? D. reach
23. A. like B. as C. just????????? D. for
24. A. through B. by C. from???????? D. on
25. A. get B. arrive C. reach???????? D. stay
答案： 1－5ACBCD? 6－10ABCDC? 11－15ABDBA?? 16－20BDCBA?? 21－25DCACD
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World temperature could?? 11?? two degrees centigrade by the year 2040. However, the increase could be three times?? 12?? great in the Arctic and Antarctic areas. This could cause the?? 13?? sheets to melt and raise the?? 14?? of the oceans?? 15? one to two metres. Many coastal cities would be?? 16?? water.
Why is this happening? There arc too?? 17?? carbon dioxide (二氧化碳)in the air. 18? oil, gas and coal burn, they create large?? 19?? of carbon dioxide. This carbon dioxide lets?? 20?? enter the Earth's atmosphere and?? 21?? the Earth. However, it doesn't let as much heat?? 22?? the atmosphere and enter space. It's?? 23?? a blanket. The heat?? 24?? the sun can pass through the blanket to warm the Earth. The heat?? 25?? there and can't escape through the blanket again.
Scientists call this the green house effect.
1. A. warmer B. colder C. better D. worse
2. A. land B. live C. climate D. weather
3. A. lower B. higher?????? C. normal?????? D. proper
4. A. good B. general????? C. serious?????? D. useful
5. A. hot B. cold???????? C. autumn????? D. growing
6. A. longer B. shorter? C. busier????? D. more important
7. A. colder B. warmer????? C. higher?????? D. lower
8. A. much B. many?????? C. amount????? D. number
9. A. lead B. keep??????? C. make???????? D. cause
10. A. oil B. industrial??? C. agricultural?? D. coal
11. A. increase B. drop???????? C. lift??????????? D. be
12. A. more B. as?????????? C. much??????? D. less
13. A. water B. rain????????? C. solid????????? D. ice
14. A. degree B. level???????? C. coast???????? D. area
15. A. by B. to?????????? C. of??????????? D. with
16. A. above B. under?????? C. in??????????? D. over
17. A. little B. many??????? C. few????????? D. much
18. A. If B. Because???? C. When??????? D. Why
19. A. amount B. amounts???? C. deal???????? D. quantity
20. A. sunlight B. air?????????? C. carbon dioxide? D. gas
21. A. cold B. protect C. hurt????????? D. heat
22. A. enter B. get C. leave???????? D. reach
23. A. like B. as C. just????????? D. for
24. A. through B. by C. from???????? D. on
25. A. get B. arrive C. reach???????? D. stay
答案： 1－5ACBCD? 6－10ABCDC? 11－15ABDBA?? 16－20BDCBA?? 21－25DCACD
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