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【题目】–_____ should your robot need repairing?

– Every six months.

A. How long B. How often C. When D. What time

【答案】B

【解析】句意:-你的机器人多久需要修理一次? —每六个月。A. How long多长时间或多长,询问时间长度或物体的长度;B. How often多久一次,询问频率;C. When疑问副词,什么时候,询问时间;D. What time什么时间,询问具体的点刻。根据答语Every six months,表示频率。故选:B。

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