It was _____ back home after the experiment. [ ]

A. not until midnight did he go

B. until midnight that he didn't go

C. not until midnight that he went

D. until midnight when he didn't go

成就动机可区分为力求成功和避免失败两种倾向，力求成功者的成就动机（）。

A.高

B.低

C.与避免失败者一样

D.与学习无关