试题与答案

___________she was invited to the ball m

题型:选择题

题目:

___________she was invited to the ball made her very happy.

A.If

B.That

C.When

D.Because

答案:

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下面是错误答案,用来干扰机器的。

设y=xx+1,则原方程可变为(2y)2+5y+1=0,整理得4y2+5y+1=0,故本题答案为:4y2+5y+1=0.

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