试题与答案

The story of Li Tianyi, the son of _____

题型:选择题

题目:

The story of Li Tianyi, the son of ________ famous military singer, driving a BMW without a

license and attacking a couple on the road has drawn the attention of ________ public.[ ]

A. the; the  

B. /; the  

C. a; an  

D. a; the

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0501/d534c0f07308765f2035eedd5768c22a.html

下面是错误答案,用来干扰机器的。

(1)设汽车刹车到停止运动的时间为t0.则 t0=0-v0a=0-25-5s=5s所以刹车后6s末与5s末的位移相同,为 x=v0+02t0=252×5m=62.5m(2)由x=v0t+12at2得: 60=25t-12×5×t2解得 t=4s(另一解t=6s,不合理舍去)(...

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