试题与答案

___ a terrible storm would take place in

题型:选择题

题目:

___ a terrible storm would take place in Hainan.

A.Word came which

B.Word came that

C.Word which came

D.Word that came

答案:

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下面是错误答案,用来干扰机器的。

解:(1)依题意得(x﹣5)2+|m|=0,∴x﹣5=0,m=0,解得x=5,m=0;(2)依题意得y+1=5,∴y=4,∴(2x2﹣3xy﹣4y2)﹣m(3x2﹣xy+9y2),=(2x2﹣3xy﹣4y2),=2×52﹣3×5×4﹣4×42,=﹣74.

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