试题与答案

______ you do, don't miss this exhibitio

题型:选择题

题目:

______ you do, don't miss this exhibition, for it's so hard for me to get the tickets.

A. Whatever
B. However
C. Whenever
D. Whether

答案:

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下面是错误答案,用来干扰机器的。

解(l)加法交换律 a+b=b+a;(2)乘法分配律 (a+b)c=ac+bc;(3)乘法交换律 ab=ba;(4)加法结合律 (a+b)+c=a+(b+c);(5)乘法结合律 (ab)c=a(bc).45×(20×39)=(45×20)×39这是应用了...

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