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In the past, man did not have to think about the protection of his environment(环境). There were few people on the earth, and natural resources seemed to be   1    .

Today things are   2    . The world has become too   3    . We are using up our natural resources too quickly, and at the same time we are   4     our environment with dangerous chemicals. If we   5     to do this, human life on the earth will not survive(幸存).

Everyone   6     today that if too many fishes are taken from the sea, there will soon be none left. Yet with modern fishing   7    , more and more fishes are caught. We know that if too many trees are cut down,   8    will disappear and nothing will grow on the land. Yet, we   9    to use bigger and more powerful machines to   10     more and more trees. We realize that if rivers are polluted with waste products from factories, we will die.   11   , in most countries, waste products are   12     put into rivers or into the sea, and there are   13     laws to stop this.

We know, too, that if the   14     of the world continues to rise at the present rate, in a few years, there will not be enough   15    . What can we do to solve(解决) these problems?

If we eat more vegetables and less    16   , there will be more food available(可得到的) for everyone. Land that is used to grow crops   17     five times more people than land where animals are kept.

Our natural resources will   18     longer if we learn to recycle them.

The world population will not rise so quickly if people use modern methods of birth   19    .

Finally, if we educate people to think about the problems, we shall have a better and cleaner   20     in the future.

1. A. beautiful                       B. unlimited      

C. rare                           D. valuable

2. A. common                      B. the same      

C. changeable                       D. different

3. A. crowded                      B. small

C. dirty                            D. busy

4. A. protecting                    B. saving

C. polluting                        D. fighting

5. A. try                           B. continue      

C. decide                         D. have

6. A. wonders                      B. realizes      

C. considers                       D. discovers

7. A. poles                         B. boats      

C. methods                        D. ideas

8. A. mountains                    B. the sea   

C. trees                           D. forests

9. A. continue                       B. have      

C. ought                             D. act

10. A. grow                       B. plant      

C. save                          D. cut

11. A. Thus                        B. However

C. Generally speaking                D. Therefore

12. A. still                        B. even      

C. also                           D. certainly

13. A. too many                    B. a few         

C. some                           D. few

14. A. production                    B. pollution

C. population                      D. revolution

15. A. houses                          B. vegetables      

C. food                          D. lives

16. A. fruit                         B. meat      

C. fish                           D. grain

17. A. feeds                       B. increases      

C. supplies                         D. helps

18. A. use                        B. stay      

C. keep                          D. last

19. A. control                          B. born      

C. plan                          D. reward

20. A. nature                      B.sea      

C. planet                          D. forest

 

答案:B;D;A;C;B;B;C;D;A;D;B;A;D;C;C;B;A;D;A;C
提示:

1 在这些人看来,自然资源是无穷无尽的

2 表示转折,今天事情已经不同了

3 这个世界变的很拥挤。

4 我们正在污染我们的环境。

5 如果我们继续这么做,人类将会灭绝。

6 每个人都认识到了

7 现代的捕鱼方法

8 树被砍伐,故森林会消失。

9 我们继续使用更有效的工具。

10 采伐更多的树,故选D项。

11 表示转折。

12 前有转折,故这句的意思是:废物仍被排到河里或海里

13 几乎没有法律

14 对世界的污染。

15 没有足够的食物。

16 多吃蔬菜少吃肉

17 养活5倍的人口。

18 我们的自然资源会持续更长的时间

19 计划生育

20 我们拥有一个更好更干净的星球。

 


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