Little           to help the poor bird, whose wing was badly injured.

A．Tom does

B．does Tom

C．does Tom do

D．did Tom do

男性，45岁，呕血400ml，黑便400g。查体：巩膜轻度黄染，肝未触及，脾肋下及边，肠鸣音活跃，移动性浊音阳性。诊断可能为

A．消化性溃疡出血

B．胃癌出血

C．食管胃底静脉曲张破裂出血

D．肝癌破裂出血

E．胆道出血