题目

题型：不详难度：来源：

—Talking loudly in a library is impolite.
—In fact, we should also  take care not to cough or sneeze loudly in public.

A．look after

B．be careful

C．take care of

D．look up

答案

B

解析

短语辨析。look after照顾；be careful小心；take care of照顾；look up向上看，查阅。句意：在图书馆大声说话是不礼貌的。——实际上，在公众场所，我们也应该小心不要咳嗽或者打喷嚏。故选B。