— He is eager to try something he has never tried before.

— Oh, I see. That's _____ he's different from others. [ ]

A. when

B. where

C. how

D. what

下列各项，属产后恶露不绝主要病机的是（）

A.冲任不固，胞脉失常

B.瘀血阻滞

C.气血两虚，冲任失固，不能摄血

D.胞宫藏泄失度，冲任不固，血海不宁

E.冲任损伤，血海不固