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____36___

◎ 题干

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____36____ .
Today things are___37_____, the world has become too___38____ . We are 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 ___40____survive.
Everyone___41_____ today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing__42_____ , more and more fish are caught. We know that if too many trees 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 and more trees.
We realize that if rivers are polluted with waste products 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 stop this.
We know, too, that if the___49____ of the world continues to rise at the present rate, in a few years, there will not be enough___50_____. What can we do to solve these problems ?
It we eat more vegetables and less___51____, there will 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 learn to recycle them. The world population will not rise so quickly if people use modern methods of birth__54_______ .
Finally, if we educate people to think about the problems, we shall have a better and clearer ___55____in the future.

小题1:

A．beautiful

B．unlimited

C．rare

D．valuable

小题2:

A．common

B．the same

C．changeable

D．different

小题3:

A．crowded

B．small

C．dirty

D．busy

小题4:

A．protecting

B．saving

C．polluting

D．fighting

小题5:

A．may not

B．will not

C．shall not

D．could not

小题6:

A．wonders

B．realizes

C．consider

D．discovers

小题7:

A．poles

B．boats

C．methods

D．ideas

小题8:

A．mountains

B．the sea

C．trees

D．forests

小题9:

A．continue

B．have

C．ought

D．will go on

小题10:

A．grow

B．plant

C．save

D．cut down

小题11:

A．Thus

B．However

C．Generally speaking

D．Therefore

小题12:

A．still

B．even

C．also

D．certainly

小题13:

A．too many

B．a few

C．some

D．few

小题14:

A．production

B．pollution

C．population

D．revolution

小题15:

A．houses

B．vegetables

C．food

D．lives

小题16:

A．fruit

B．meat

C．fish

D．grain

小题17:

A．feeds

B．increases

C．supplies

D．helps

小题18:

A．use

B．stay

C．keep

D．last

小题19:

A．control

B．born

C．plan

D．reward

小题20:

A．nature

B．sea

C．planet

D．Forest

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◎ 解析

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◎ 知识点

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