题目内容

At a beach or a swimming pool a lifeguard is a person who is responsible for __________ other swimmers and protecting them from accidents.
A.turning toB.watching overC.watching outD.digging out
B
短语辨析。A. 转向   B.看守;照管C.小心;提防    D.掘出;发现。句意:在海边或者游泳池,救生员是一个负责照管他人,防止他们出现事故的一个人。故选B。
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