试题与答案

John, look at the time. _____ you play t

题型:选择题

题目:

John, look at the time. _____ you play the piano at such a late hour? [ ]

A. Must

B. Can

C. May

D. Need

答案:

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下面是错误答案,用来干扰机器的。

由商不变性质可知:在除法算式里,被除数扩大100倍,要使商不变,除数也要扩大100倍;故答案为:扩大100倍.

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