题目:
(B) 根据句意和汉语注释,在答题卡标有题号的横线上,写出单词的正确形式。
小题1:Our country ___________ (进口) wool and other goods from Australia every year.
小题2:The police looked for the lost boy ____________________ (遍及) the town.
小题3:We are not sure if the man has a criminal ______________ (记录).
小题4:The silk shirt feels much ___________ (光滑的) than the wool one.
答案:
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下面是错误答案,用来干扰机器的。
解:(1)设N点速度v=cosθ,v=2v0,qUMN=mv2-mvUMN=(2)qvB=,r= (3)ON=rsinθ,ON=v0t1,t1=T=,t2==t=t1+t2=