Directions：For each blank in the following passage there are four words or phrases marked A，B，C and D．Fill each blank with a word or phrase that best fits the context．

In the past, man didn’t have to think about the protection of his environment. There were few people on the earth, and natural resources seemed to be 36   .

Today things are 37  , and the world has become too  38  . We’re using up our natural resources too quickly, and at the same time we are   39   our environment with dangerous chemicals. If we continue to do this, human life on the earth will not survive.

Everyone 40   today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing 41   , more and more fish are caught. We know that if too many trees are cut down, forests will disappear and nothing will grow on the land. Yet, we   42  to use bigger and more powerful machines to cut down more and more trees.

We know that if rivers are polluted with waste products from factories, we’ll die.  43  , in most countries wastes are still put into rivers or into the sea, and there are 44   laws to stop this.

We know, too, that if the 45   of the world continues to rise at the present rate, in a few years there will not be enough food . What can we do to solve these problems? 

If we eat more vegetables and less meat there will be more food available for every one. Land that is used to grow crops   46   five times more people than land where animals are kept. Our natural resources will last longer if we learn to recycle them.

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

Finally, if we educate people to think about the problems, we shall have a better and cleaner 47    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. wonders       B. realizes          C. considers          D. discovers

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

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

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

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

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

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

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

Directions：For each blank in the following passage there are four words or phrases marked A，B，C and D．Fill each blank with a word or phrase that best fits the context．

In the past, man didn’t have to think about the protection of his environment. There were few people on the earth, and natural resources seemed to be 36   .

Today things are 37  , and the world has become too  38  . We’re using up our natural resources too quickly, and at the same time we are   39   our environment with dangerous chemicals. If we continue to do this, human life on the earth will not survive.

Everyone 40   today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing 41   , more and more fish are caught. We know that if too many trees are cut down, forests will disappear and nothing will grow on the land. Yet, we   42  to use bigger and more powerful machines to cut down more and more trees.

We know that if rivers are polluted with waste products from factories, we’ll die.  43  , in most countries wastes are still put into rivers or into the sea, and there are 44   laws to stop this.

We know, too, that if the 45   of the world continues to rise at the present rate, in a few years there will not be enough food . What can we do to solve these problems? 

If we eat more vegetables and less meat there will be more food available for every one. Land that is used to grow crops   46   five times more people than land where animals are kept. Our natural resources will last longer if we learn to recycle them.

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

Finally, if we educate people to think about the problems, we shall have a better and cleaner 47    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. wonders       B. realizes          C. considers          D. discovers

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

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

8.A. Thus              B. However       C. Generally speaking    D. Therefore

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

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

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

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

 

完形填空

　　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 __1__ 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 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,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 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.

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完形填空

　　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 __1__ 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 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,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 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.

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完形填空（共20小题，每小题1分，满分20分）

从A.B.C.D四个选项中，选出可以填入空白处的最佳选项。

    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   31   ．

    Today things are   32   , the world has become too   33   ．We are using up our natural resources too quickly and at the same time we are   34   our environment with dangerous chemicals．If we continue to do this, human life on the earth   35   survive．

    Everyone   36   today that if too many fishes are taken from the sea, there will soon be none left． Yet, with modern fishing   37    , more and more fishes are caught．We know that if too many trees are cut down,   38    will disappear and nothing will grow on the earth．Yet we __39   to use bigger and more powerful machines to    40    more and more trees．

    We realize that if rivers are polluted with waste products from factories, fish will die． 41  , in most countries wastes are   42   put into rivers or into the sea, and there are   43   laws to stop this．

    We know, too, that if the   44   of the world continues to rise at the present rate , in a few years there will not be enough   45   ．What can we do to solve these problems?

    If we eat more vegetables and less   46   ,there will be more food available for everyone．Land that is used to grow crops   47   five times more people than land where animals are kept．

    Our natural resources will    48    longer if we learn to recyclethem．

    The world population will not rise so quickly if people use modern methods of birth  49  ．

    Finally, if we educate people to think about the problems, we shall have a better and cleaner   50    in the future．

1.A．beautiful          B．unlimited        C．unusual          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．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