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单选

P

  • age seems to
  • believe that    [A]the gene loss of Y
  • chromosome is sure an
  • dfast.    [B]thegene loss of Y chromosome is quite slow.    [C]the Y chromosome is facin9“imminentdemise”.    [D]the Y chromosome will be replaced by a newone.
试题出自试卷《2013年考研《英语》考前押密试卷(七)》
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