题海让大学四年没有难题
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题目详情

单选题 Safety regulations were not strictly obeyed in the factory, so this tragedy didn't happen ________

A. by accident

B. by contrast

C. by definition

D. by turns

大学英语A(3)-2022级课程封面

学科:大学英语A(3)-2022级

时间:2023-12-06 05:12:28

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