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  • 更新 2022-09-03
  • 科目 英语
  • 题型 完型填空
  • 难度 中等
  • 浏览 1722

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      .
Today things are     , the world has become too      . We are using up our natural resources too quickly and at the same time we are       our environment with dangerous chemicals . If we continue to do this, human life on the earth       survive.
Everyone       today that if too many fishes are taken from the sea, there will soon be      left. Yet, with modern fishing methods, more and more fishes are caught. We know that if too many trees are cut down,       will disappear and nothing will grow on the earth. Yet we          to use bigger and more      machines to cut down more and more trees.
We realize that if rivers are polluted with waste products from factories, fish will die.      , in most countries wastes are        put into rivers or into the sea, and there are       laws to stop this.
We know, too, that if the        of the world continues to rise at the present rate, in a few years there will not be enough       . What can we do to solve these problems?
If we eat more vegetables and less       , there will be more food available for everyone. Land that is used to grow crops        five times more people than land where animals are kept.
Our natural resources will        longer if we learn to recycle them.
The world population will not rise so quickly if people use modern methods of birth       .
Finally, if we educate people to think about all the problems, we shall have a better and cleaner         in the future.

A.beautiful B.endless C.unusual 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.must not B.will not C.shall not D.could not

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

A.nothing B.anything C.none D.something

A.mountains B.the sea C.animals D.forests

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

A.friendly B.absolute C.comfortable D.powerful

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

A.still B.even C.also D.certainly

A.many B.much C.little D.few

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

A.rooms B.vegetables C.food D.places

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.pay

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

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Inthepast,mandidnothavetothink