It _____ that Yu Mei has changed a lot.   [ ]

A. seem

B. seems

C. look

D seemed

关于第二肝门的解剖定义是（）

A.右、中、左肝静脉主干注入下腔静脉处

B.左门静脉进入圆韧带处

C.尾叶引流静脉进入下腔静脉处

D.门静脉、肝动脉、胆管出入肝处

E.左、右肝管出肝处