In the past, man did not have to think about the protection of his environment.

In the past, man did not have to think about theprotection of his environment. There were few people on the earth, and naturalresources seemed to be____36____ .

Today things are___37_____, the world has becometoo___38____ . We are using up our natural resources too quickly, and at thesame time we are___39____ our environment with dangerous chemicals. If wecontinue to do this, human life on the earth ___40____survive.

Everyone___41_____ today that if too many fish aretaken from the sea, there will soon be none left. Yet, with modernfishing__42_____ , more and more fish are caught. We know that if too manytrees are cut down, ___43____will disappear and nothing will grow on the land.Yet, we ___44_____to use bigger and more powerful machines to __45____more andmore trees.

We realize that if rivers are polluted with wasteproducts from factories, we will die.___46_____, in most countries wastes are___47______put into rivers or into the sea, and there are _48_____laws to stopthis.

We know, too, that if the___49____ of the worldcontinues to rise at the present rate, in a few years, there will not beenough___50_____. What can we do to solve these problems ?

It we eat more vegetables and less___51____, therewill be more food available for everyone. Land that is used to grow crops__52_____five times more people than land where animals are kept.

Our natural resources will _53_____longer if we learnto recycle them. The world population will not rise so quickly if people usemodern methods of birth__54_______ .

Finally, if we educate people to think about theproblems, we shall have a better and clearer ___55____in the future.

1.                A．beautiful        B．unlimited （无限的） 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. thesea       C.trees              D.forests

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

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

11.               A．Thus           B．However       C．Generallyspeaking   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

试题答案

【答案】

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】

试题