题目内容

乙酰半胱氨酸可减低青霉素的药效,所以两者要间隔使用。

A. 对
B. 错

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选择最合适的选项匹配填入括号中。

选择最合适的选项填入括号中。

将最合适的选项填入括号中。

Overall, our study offers proof ______ students who worked more than 20 hours weekly were not comparable to their classmates.

A. which
B. whether
C.that
D. what

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