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    精英家教网 > 初中英语 > 题目详情

    【题目】Tu Youyou is a Chinese scientist. She medicine since 1951.

    A. will study B. has studied

    C. studies D. is studying

    【答案】B

    【解析】试题分析：考查动词时态。句意：屠呦呦是一个中国籍的科学家。自从1951年，她就研究医药了。

    由于本句中出现时间状语since 1951，故用现在完成时。根据句意，故选B。

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