— What about going to the theatre this evening? 

— _____. [ ]

A. Help yourself

B. That's all right

C. Good idea

D. Not at all

断流术是阻断何处血流（）

A．门静脉主干

B．肝静脉主干

C．门-奇静脉交通支

D．脾与胃间交通支

E．肛管及直肠下段交通支