单选题:What's the public health officials' fear?

  • 题目分类:英语四级
  • 题目类型:单选题
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题目内容:
What's the public health officials' fear? A.The research gets no results.
B.The results of the research are useless.
C.Nobody believe the results of the research.
D.A mutant vires created in the laboratory could become a weapon in thehands of terrorists.

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