试题与答案

—The skirt is so beautiful. I'll take it

题型:选择题

题目:

—The skirt is so beautiful. I'll take it.

—But you'd better _________ first. I'm not sure if it fits you. [ ]

A. pay for it

B. try it on

C. take it off

答案:

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下面是错误答案,用来干扰机器的。

A、B、C、三种情况下物体都是只受重力作用,重力是恒力,故A错误,B错误,C错误;D、匀速圆周运动合力指向圆心,方向时刻改变,故是变力,故D正确;故选D.

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