----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

应考虑采取的治疗方法是

A．单纯肾切除术
B．根治性肾切除术
C．肾动脉栓塞术
D．肾切除＋化疗
E．肾切除十全部输尿管切除＋部分膀胱壁切除