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    精英家教网 > 高中英语 > 题目详情
    His latest research is at the   of genetic science.
    A．maiden voyageB．cutting edge
    C．focus groupD．daily basis
     B
     本题考查名词短语辨析。句意：他的最新研究处于基因科学的前沿位置。at the cutting edge of处在……最前沿的位置。
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