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完形填空:阅读下面短文,掌握其大意,然后从各题所给的四个选项中选出一个最佳答案。...

完形填空:阅读下面短文,掌握其大意,然后从各题所给的四个选项中选出一个最佳答案。(共20小题,每小题1.5分)

   In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural resources seemed to be 46  .                    Today things are  47  , the world has become too  48  . We are using up our natural resources too quickly, and at the same time we are  49  our environment with dangerous chemicals. If we continue to do this, human life on the earth  50  survive.

  Everyone 51  today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing  52 , more and more fish are caught. We know that if too many trees are cut down,  53  will disappear and nothing will grow on the land. Yet, we  54  to use bigger and more powerful machines to  55  more and more trees.

  We realize that if rivers are polluted with waste products from factories, we will die.  56  , in most countries wastes are  57  put into rivers or into the sea, and there are  58  laws to stop this. We know, too, that if the  59  of the world continues to rise at the present rate, in a few years there will not be enough 60 . What can we do to solve these problems ?

   If  we eat more vegetables and less  61  , there will be more food available for everyone. Land that is used to grow crops  62  five times more people than land where animals are kept. Our natural resources will  63  longer if we learn to recycle them. The world population will not rise so quickly if people use modern methods of birth 64  .

  Finally, if we educate people to think about the problems, we shall have a better and clearer 65  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. may not             B. will not                   C. shall not                D. could not

6.A. wonders            B. realizes                  C. consider                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. go on

10.A. grow                 B. plant                       C. save                        D. cut down

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

 

1.B 2.D 3.A 4.C 5.B 6.B 7.C 8.D 9.A 10.D 11.B 12.A 13.D 14.C 15.C 16.B 17.A 18.D 19.A 20.C 【解析】略
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