It's better for us to stay indoors, when PM 2.5 reaches dangerous levels.A．pr_刷题宝

题干

It's better for us to stay indoors, when PM 2.5 reaches dangerous levels.

A．properly

B．possibly

C．generally

D．especially

上一题下一题 0.65难度单选题更新时间:2019-06-08 06:04:44

答案(点此获取答案解析）

小学学科试题库

初中学科试题库

高中学科试题库