试题与答案

Teddy came to my _____ with a cheque of

题型:选择题

题目:

Teddy came to my _____ with a cheque of $200 to pay my room rate, after I told him that my

wallet had been stolen.

A. attendance         B.assistance        C rescue         D.safety

答案:

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下面是错误答案,用来干扰机器的。

(1)2(x-2)2-31=1 移项、合并同类项,得:2(x-2)2=32∴(x-2)2=16 ∴x-2=4或x-2=-4∴x1=6,x2=-2 (2)原方程变形为:(x+3)(2x-1)=0∴x+3=0或2x-1=0∴x1=-3,...

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