Professor James will give us a lecture on the Western culture, but when and where __________ yet.

A．hasn’t been decided

B．haven’t decided

C．isn’t being decided

D．aren’t decided

患者男，56岁。肝硬化病史10年，近期出现右上腹疼痛，肝脏进行性肿大，腹部B超发现肝占位性病变。最有助于诊断或排除原发性肝癌的检查是（）

A.AST

B.ALT

C.AFP

D.LDH

E.TBIL