Question

 Ecology (生態(tài)學(xué)) is the science of how living creatures and plants exist together and depend on each other and on the local environment. Where an en?vironment is undisturbed,the ecology of the area is 1        in nature balance,but if a creature dies out or a new species is 2       ,then the ecology of the ar?ea will be upset. In other 3       ,the balance of nature will be 4       .

  Man is a part of the 5        and has done more to upset the ecology during 6        short span on earth than 7        other living creature. He has done this by his ignorance,his 8      ,his thoughtless foolishness and his uncontrolled wastefulness.

  He has poisoned the 9        and polluted both land and water. He has wasted the earth's natural 10        with no thought for the future,and has thought out the most devastating (毀滅) ways of killing his fellow men and every other sort of life at the same time.

  Since man has done so much damage,it is up to man to try to 11        the way he acts if it is not already too 12        If there is to be any remedy (補(bǔ)救法) for our ills,that remedy ultimately lies in the hands of the 13       ,and the sooner they start doing something about it,the 14       .

  One of the main 15        of the earth's troubles is that the world is too 16        and that this overpopulation is growing at an evei^increasing rate. At the same time we are 17        up our natural resources―fuels and mineral ores―at an everincreasing rate with no 18        of replacing them.

  For many years the earth has been unable to 19        enough food for these rapidly expanding populations and the position has been steadily getting worse 20        some of our richest soil was lost and vast areas that were once fertile lands were turned into deserts.

1. A. kept   B. stopped   C. finished   D. lost

2. A. found out   B. brought in

  C. broken down   D. took out ,

3. A. cases   B. speeches   C. ways   D. words

4. A. changed   B. troubled   C. kept   D. damaged

5. A. environment   B. situation   C. science   D. condition

6. A. their   B. one's   C. one   D. his

7. A. any   B. an   C. all   D. most

8. A. greed   B. hope   C. fear   D. desire

9. A. sky   B. heaven   C. air   D. space

10. A. energy   B. resources   C. sources   D. power

11. A. correct   B. right

  C. back   D. forward

12. A. late   B. soon   C. long   D. distant

13. A. old   B. adults   C. young   D. future

14. A. better   B. best

  C. quicker   D. perfect

15. A. conditions   B. effects   C. results   D. causes

16. A. busy   B. crowded   C. large   D. broad

17. A. using   B. wasting   C. giving   D. drawing

18. A. help   B. hope   C. thought   D. feeling

19. A. feel   B. support   C. survive   D. provide

20. A. until   B. when

  C. since   D. whereas 

Answer 1

1. A根據(jù)句意，如果這里的環(huán)境沒有受到干擾，這里就可以保持(keep) 生態(tài)平衡。

2. B bring in表示"引進(jìn)，引人"。

3. D in other words表示"換句話說，換而言之"。

4. D 這時(shí)生態(tài)平衡就會(huì)遭到破壞(damage) 。

5. A 人類是環(huán)境的一個(gè)組成部分。

6. D 用his指代單數(shù)名詞man,

7. A 人類對(duì)環(huán)境的影響比其他任何一種生物要大得多。

8. A

9. C 人類活動(dòng)導(dǎo)致空氣、水和土壤受到污染。

10. B natural resources表示"自然資源"。

11. A 既然人類對(duì)環(huán)境進(jìn)行了那么多的破壞，現(xiàn)在該是人類糾正(correct) 他們的行為方式的時(shí)候了。

12. A 假如現(xiàn)在還不是太遲的話，人類就應(yīng)該糾正錯(cuò)誤。

13. C 補(bǔ)救的方法掌握在年輕人手里，因?yàn)檠a(bǔ)救過程需要很長(zhǎng)時(shí)間。

14. A the sooner...the better是比較狀語從句，表示"越早……就越好"。

15. D 導(dǎo)致問題發(fā)生的原因用cause

16. B 世界過于擁擠(crowded) 是環(huán)境惡化的根本原因。

17. A use up表示"用完，用盡"。

18. B with no hope of replacing them表示"現(xiàn)在還沒有希望用其他東西來替代它們"。

19. D provide ...for...表示"為……提供/供給……"。

20. C since"因?yàn)?，后面接表示形勢(shì)惡化的原因。