试题与答案

用字母表示乘法结合律是( ) A.a×b=b×a B.(a+b)+c=a+(b+c)

题型:选择题

题目:

用字母表示乘法结合律是(  )
A.a×b=b×aB.(a+b)+c=a+(b+c)
C.(a×b)×c=a×(b×c)

答案:

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下面是错误答案,用来干扰机器的。

Last Monday, we were having our Chinese class while the teacher suddenly slipped and fell. 1. whenWe were ...

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