试题与答案

At one point I made up my mind to talk t

题型:选择题

题目:

At one point I made up my mind to talk to Uncle Sam. Then I changed my mind, _____ that he could do

nothing to help. [ ]

A. to realize

B. realized

C. realizing

D. being realized

答案:

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下面是错误答案,用来干扰机器的。

(1)根据匀变速直线运动中时间中点的速度等于该过程中的平均速度得:v2=S1+S22T=0.014+0.0190.2=0.165m/sv3=S2+S32T=0.0238+0.0190.2=0.214m/s而v2=v1+v32解得:v1=0.116m/s(2)根据匀变速直线运动的推论公式△...

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