In the past, man did not have to think about the protection of his environment(環(huán)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(解決) 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 在這些人看來(lái)，自然資源是無(wú)窮無(wú)盡的

2 表示轉(zhuǎn)折，今天事情已經(jīng)不同了

3 這個(gè)世界變的很擁擠。

4 我們正在污染我們的環(huán)境。

5 如果我們繼續(xù)這么做，人類將會(huì)滅絕。

6 每個(gè)人都認(rèn)識(shí)到了

7 現(xiàn)代的捕魚方法

8 樹被砍伐，故森林會(huì)消失。

9 我們繼續(xù)使用更有效的工具。

10 采伐更多的樹，故選D項(xiàng)。

11 表示轉(zhuǎn)折。

12 前有轉(zhuǎn)折，故這句的意思是：廢物仍被排到河里或海里

13 幾乎沒(méi)有法律

14 對(duì)世界的污染。

15 沒(méi)有足夠的食物。

16 多吃蔬菜少吃肉

17 養(yǎng)活5倍的人口。

18 我們的自然資源會(huì)持續(xù)更長(zhǎng)的時(shí)間

19 計(jì)劃生育

20 我們擁有一個(gè)更好更干凈的星球。

 


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