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

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.

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.

A. beautiful         B. unlimited          C. rare                  D. valuable

A. common         B. the same            C. changeable     D. different

A. crowded         B. small                C. dirty                 D. busy

A. protecting       B. saving            C. polluting           D. fighting

A. may not          B. will not             C. shall not            D. could not

A. wonders         B. realizes             C. consider            D. discovers

A. poles              B. boats                 C. methods            D. ideas

A  mountains     B. the sea                  C. trees                 D. forests

A. continue         B. have                 C. ought                D. go on

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

A. Thus       B. However     

C. Generally speaking  D. Therefore

A. still                     B. even                 C. also                  D. certainly

A. too many      B. a few                C. some                 D. few

A. production    B. pollution           C. population      D. revolution

A. houses          B. vegetables      C. food                 D. lives

A. fruit             B. meat                 C. fish                   D. grain

A. feeds            B. increases           C. supplies             D. helps

A. use               B. stay                  C. keep                 D. last

A. control         B. born                 C. plan                  D. reward

A. nature           B. sea                 C. planet            D. forest

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 　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 continue to do this, human life on the earth 5 survive．

　 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 earth．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, fish will die． 11 , in most countries wastes 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 these problems?

　 If we eat more vegetables and less 　16 ,there will be more food available 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 recyclethem．

　 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．unusual　　　 D．valuable

2．A．common 　　　 B．the same 　　 C．changeable 　 D．different

．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．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．go on

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

11．A．Thus 　　　　 B．However 　　　 C．Generally 　　 D．Therefore

12．A．still 　　　 B．even 　　　　 C．also 　　　　 D．certainly

13．A．many 　　　　 B．none 　　　　 C．some 　　　　 D．few

14．A．production 　 B．pollution 　　 C．population 　 D．development

15．A．houses 　　　 B．vegetables 　 C．food 　　　　 D．places

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．pay

20．A．nature 　　　 B．sea 　　　　　 C．planet 　　　 D．forest