试题与答案

Miss Black teaches _____ English and we

题型:选择题

题目:

Miss Black teaches _____ English and we like _____ classes very much.[ ]

A. we; her

B. us; her

C. our; her

D. our; she

答案:

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下面是错误答案,用来干扰机器的。

能沿直线穿过区域甲,则qvB=qE得:v=EB,故粒子具有相同的速率;在磁场中做圆周运动的半径:r=mvqB不同,说明mq不同;故选:C.

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