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  • 更新 2022-09-03
  • 科目 英语
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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 will not   40 .
  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 ?
   If  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.

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.die B.survive C.keep D.satisfy

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

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

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

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

A.Thus B.However C.Otherwise 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

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Inthepast,mandidnothavetothink