What does the last sentence in the third paragraph imply、

试卷相关题目

• 1According to t11e passage，we do not know whether humans will benefit from taking in fewer calories partly because

  A.humans，worms and rodents are different．

  B.most people are not willing to be put on a strict diet．

  C.the effect is not known．

  D.genetic changes in tissues can not be performed on humans

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• 2Ronald Kahn and his colleagues can make mice live longer by

  A.offering them less food．

  B.giving them a balanced diet．

  C.disrupting the specific genes in their fat cells．

  D.preventing them growing larger

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• 3Which of the following is NOT true of the scoring system for diving、

  A.It is more biased．

  B.It is more reasonable．

  C.It is fairer．

  D.It is tighter．

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• 4The attitude of those concerned in the UK to the new rules proposed by ISU Can be best described as

  A.indifferent．

  B.reserved．

  C.enthusiastic．

  D.positive．

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• 5What does Jerry Bingham express by saying “I remain to be convinced”、

  A.His anger．

  B.His criticism．

  C.His agreement．

  D.His doubt．

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• 6The average modified mouse lived

  A.3 years．

  B.753 days．

  C.More than 3 years．

  D.887 days．

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• 7What Can be inferred from the passage about the route tO long life、

  A.It remains to be studied．

  B.It has already been discovered．

  C.Eating more leads to long life．

  D.Eating less leads to long life．

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