The main idea of the passage is ______________．

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• 1We make a nature sanctuary for rare birds but _______________.

  A.some common and hardy kind of bird multiplies

  B.rare kinds multiply

  C.all bird multiply

  D.no bird multiply

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• 2What have spread diseases、

  A.Disease-sleeping sickness．

  B.Measles．

  C.Improved communications．

  D.Malaria．

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• 3What had a piece of Canadian waterweed cause、

  A.Eastern Australian was overrun with forests．

  B.Half the waterways of Britain blocked for a decade．

  C.In parts of central Africa, the land reduced to a semi desert．

  D.Disease-sleeping has been caused．

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• 4The following examples except _______________ reflect man altering the balance of nature．

  A.man is covering huge areas with new kinds of plants

  B.man is facilitating the spread of animals into new regions．

  C.man is killing some species on a large scale

  D.man is getting to know the importance of keeping the balance of nature．

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• 5Which of the following statements about microwave heaters would Buffler most probably agree with、

  A.Microwave heaters will soon be widely used by homeowners.

  B.Microwave heaters sometimes make people feel uncomfortable.

  C.Perhaps microwave heaters will be first used by livestock farmers, who wish to protect their lambs in winter.

  D.Microwave heaters cannot be accepted by the public because they are somewhat unsaf

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• 6According to the author, a bachelor resists marriage chiefly because ____________ .

  A.he is reluctant to take on family responsibilities

  B.he believes that life will be more cheerful if he remains single

  C.he finds more fun in dating than in marriage

  D.he fears it will put an end to all his fun adventure and excitement

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• 7Raising children, in the author’s opinion is ____________ .

  A.a moral duty

  B.a thankless job

  C.a rewarding task

  D.a source of inevitable pain

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• 8From the last paragraph, we learn that envy sometimes stems from ____________ .

  A.hatred

  B.misunderstanding

  C.prejudice

  D.ignorance

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• 9To understand what true happiness is one must ____________ .

  A.have as much fun as possible during one’s lifetime

  B.make every effort to liberate oneself from pain

  C.put up with pain under all circumstances

  D.be able to distinguish happiness from fun

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• 10What is the author trying to tell us、

  A.Happiness often goes hand in hand with pain．

  B.One must know how to attain happiness.

  C.It is important to make commitments.

  D.It is pain that leads to happiness.

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