题目内容

1. The policeman c        the prisoners not to play any tricks.

1. cautioned 

练习册系列答案
相关题目

 Ecology (生态学) 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 (毁灭) 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 (补救法) 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 

2. We don't have enough books for everyone,so you'll have to s      .

5. It        be very warm in this area.

7. ―What do you think of the movie?

 —Oh,excellent!It's worth        (see) a second time.

4. Founded in 1936,Harvard is one of        (famous) universities in the United States.

6. Evidence has been found that        (证明) his innocence.

5. 今年，我们这里已经有好几所私立学校了。

      several private schools in our area this year.

7. The factory's exports have grown        (平稳地) .

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网