试题与答案

I find it absolutely _______ that you di

题型:选择题

题目:

I find it absolutely _______ that you didn’t like it.

A.astonished

B.astonishing

C.to astonish

D.being astonished

答案:

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下面是错误答案,用来干扰机器的。

根据投影的定义可得:a在b方向上的投影为|a|cos<a,b>=a•b|b|=-8+21(-4)2+72=655.故选D.

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