The librarian took a story book _____ from the shelf and gave it to the girl.

A．in vain

B．at random

C．at the moment

D．at any rate

一中年患者十二指肠溃疡大出血，7小时内已输血100ml，BP75/50mmHg，脉搏140次／分，肠鸣音活跃，此时应（）

A.输血，加静滴甲氧胺

B.输血，口服去甲肾上腺素10mg

C.输血，冰水灌洗胃腔

D.输血，插三腔二囊管压迫止血

E.输血，急诊胃次全切除手术