----He is fluent in English because he once stayed in London ．

---- Really ? How long _________ there ?

A．did he live

B．has he lived

C．had he lived

D．does he live

患者，男，60岁。l0年前患肝炎，近2周右胁时痛，腹诊可触及肝下缘质地较硬。除哪味药外均可使用（）

A.丹参

B.牡蛎

C.枳实

D.鳖甲

E.郁金