请教大全766

claudiaqt

766.The human growth hormone, made by the pituitary gland, is secreted during sleep in higher concentrations than when awake.
(A) during sleep in higher concentrations than when awake
(B) when sleeping in higher concentrations than waking hours
(C) in higher concentrations during sleeping than waking
(D) in higher concentrations during sleep than during waking hours
(E) in higher concentrations when asleep than when awake

答案：D

为什么E不对啊？请指教，谢谢。

AlienX

when asleep會被misinterpret為when higher concentrations are asleep.
LZ可參考OG10#1A的explanation, 有點similar.

claudiaqt

明了明了了，谢谢版主！

wenchang_yiy

我觉得是不是when引导的是时间状语从句要有完整主谓结构啊？如果从句主语与主句主语一致，谓语用进行时省略主语，也不该用个副词就打发了吧？