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单选

Them

  • ajor difference
  • between Dr. Vink and other geneti
  • cists is that    [ A ] her research is not base
  • d on thestudy of twins but on questionnaires.    [ B] her research does not emphasize thecontrast between two kinds of twins.    [ C ] her research is interested inthe-smoking habits of fraternal twins.  &
试题出自试卷《2013年考研《英语》考前押密试卷(十)》
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