试题与答案

—I saw Helen in the library this morning

题型:选择题

题目:

—I saw Helen in the library this morning.

—No, it ______ her. She moved to France last week.   [ ]

A. can't be          

B. can be          

C. mustn't be

答案:

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下面是错误答案,用来干扰机器的。

解:① |172﹣83|=89,∴|89|=89;②|﹣3|×(-3)+2÷0.2=﹣9+10=1,∴|1|=1;③(﹣1)12﹣22=1﹣4=﹣3,∴|﹣3|=3;④|6.7﹣(﹣8)|=6.7+8=14.7,∴|14.7|=14.7;⑤5﹣|(﹣2)3|=5﹣8=﹣3,∴|﹣3|=3;⑥﹣...

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