第一肝门内三结构是（）。

A.肝动脉、肝静脉和门静脉

B.门静脉、肝动脉和胆总管

C.胆总管、门静脉和肝静脉

D.胆总管、胆囊管和左右肝管

E.门静脉、肝静脉、胆总管

—Don’t you feel surprised to see Bruce at the meeting ?

—No. I really didn’t think         here .

A．he has been

B．he had been

C．he would be

D．he would have