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    精英家教网 > 高中英语 > 题目详情
    As a result of __ is now known in physics and chemistry, scientists have been able to make important discoveries in biology and medicine.
    A．itB．whatC．whichD．that
    B

    试题分析：句意：由于在物理学和化学上已知的知识的原因，科学家们已经能够在生物学和医药上取得重要发现。what 引导宾语从句，在从句中做主语。在宾语从句中，which 是哪一个，that不做成分。故选B。
    考点: 考查从句关系词的用法。
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