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王老师:19139051760(拨打)

题目更新时间：2023/4/3

The students didn.t manage to work out the problem ______ their teacher had explained how.
选项:
A:when
B:until
C:unless
D:as

答案

标准答案:b

出自：青书学堂 >> 河南科技大学大学英语3(专升本)
河南科技大学继续教育学院

王老师:19139051760(拨打)

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第1题

Usually scientists test a theory for a while ______ they accept it as true. 选项: A:before B:after C:when D:because

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第2题

______, he failed in the examination. 选项: A:Although he didn.t work so hard as usual B:As he worked harder than usual

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第3题

____ when he saw his wife.s face did Tom realize the true meaning of her remark. 选项: A:Just B:Never C:Usually D:On

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第4题

Hardly had we arrived home ______ we all sat down to rest. 选项: A:than B:then C:when D:until

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