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

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• 1Ronald 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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• 2Which 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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• 3The 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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• 4What 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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• 5According to the new rules proposed by the ISU，which of the following is right、

  A.The number of judges will be doubled．

  B.Only half of the judges will score．

  C.Only some selected judges will score．

  D.Only half of the scores will count．

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• 6What does the last sentence in the third paragraph imply、

  A.People like to lose weight，but they do not like to eat less．

  B.People want to go to heaven．but they do not want to die．

  C.Mice will go to heaven if they lose weight．

  D.Mice enjoy losing weight．

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• 7The average modified mouse lived

  A.3 years．

  B.753 days．

  C.More than 3 years．

  D.887 days．

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• 8What 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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