题目内容
【题目】一There's a sign "Be quiet" on the wall of the reading room.
一Yes. People talk loudly in public.
A. may not B. mustn't
C. can't D. needn't
【答案】B
【解析】
试题分析:句意:--在阅览室的墙上有一个“保持安静”的标志。--是的,人们不可以在公共场合大声交谈。A. may not不可以;B. mustn't禁止;C. can't不能;D. needn't不必。根据题意,故选B。
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