Despite the extreme condition, Deng Jiaxian refused to________from hisresponsibility and kept on conducting scientific

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1. (2023高二下·河西期中) Despite the extreme condition, Deng Jiaxian refused to________from hisresponsibility and kept on conducting scientific research.

A . cut down B . back down C . put down D . turn down

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天津市河西区2022-2023学年高二下学期4月期中英语试卷