Under no circumstances _______ the difficulties when they were on an expedition to the Antarctic．

A．they gave way to

B．did they give way to

C．they had given way to

D．had they given way to

地西泮适用于（）

A.震颤麻痹综合征

B.呼吸抑制

C.抑郁症

D.镇静催眠

E.老年人脑功能不全综合征