-----You were brave enough to raise objections at the meeting.　　

-----Well, now I regret ____that.

A．to do

B．to be doing

C．to have done

D．having done

门静脉高压症病人脾切除术2周后应定期检查（）

A.生命体征

B.腹部体征

C.肝肾功能

D.凝血时间

E.血小板计数