After taking exercise for a few weeks，the mice were found to have_____．

试卷相关题目

• 1Walking regularly helps elderly people_______．

  A.lose weight

  B.become happier

  C.concentrate better

  D.look younger

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• 2A major earthquake striking San Francisco someday is inevitable．

  A.Right

  B.Wrong

  C.Not mentioned

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• 3Scientist will be able to predict the exact time of an earthquake soon．

  A.Right

  B.Wrong

  C.Not mentioned

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• 4San Francisco is fully prepared for another big earthquake．

  A.Right

  B.Wrong

  C.Not mentioned

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• 5Earthquakes rarely happened before 1906．

  A.Right

  B.Wrong

  C.Not mentioned

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• 6The first study on 41 elderly people found______．

  A.the less-fit participants did arrow tasks faster

  B.the fitter participants did arrow tasks faster

  C.the less-fit participants gave more accurate answers

  D.the fitter participants gave more accurate answers

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• 7It can be good for health when one takes a walk every 2 or 3 days for at least______．

  A.3 minutes

  B.45 minutes

  C.30 minutes

  D.10 minutes

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• 8It is suggested in the last paragraph that people should______．

  A.run around once a week

  B.not read and walk at the same time

  C.go for a walk every day

  D.not hurt their friends while exercising

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• 9What is meant by"death chemical"mentioned in paragraph 3、

  A.A chemical that contains poison．

  B.A chemical that causes death．

  C.A chemical that announces death．

  D.A chemical that prevents death．

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• 10Which of the following statements is NOT true of ants、

  A.Ants know very soon that another ant is dead．

  B.When an ant is dead，others move its body out of the nest．

  C.If an ant is unconscious，it is moved out of the nest．

  D.Living ants have the"I'm dead"chemical on their bodies．

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