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﹣...