There are some health problems that, when__________ in time, can become bigge...

作者: tihaiku 人气: - 评论: 0
问题 There are some health problems that, when__________ in time, can become bigger oneslater on.
选项 A.not treated B.not being treated C.not to be treated D.not have been treated
答案 A
解析 本题考查非谓语动词及状语从句的省略。连词when之后为状语从句的省略,非谓语动词treat的逻辑主语即为主句主语health problems,它们之间的关系为被动关系,故选A。

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