————,it is dangerous to look out of windows when are on the train.
有3个选项
A.Look up B.Look out C.Look after
人气：445 ℃ 时间：2019-11-06 15:25:42
解答
选B
因为look up有查询,抬头看等意思,可以说look up the dictionary
而look after 是照顾照料的意思,look after the child
look out 有当心,小心的意思,所以选、B
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