男性，48岁。查体时B超检查发现左侧肾下极有一4.5cm×3.2cm实性占位，肾门处有一直径1.5cm的肿物。静脉肾盂造影：两肾无异常改变。

术前磁共振（MRI）检查发现肾静脉内有栓塞，此时手术方式宜采取（）

A.放弃手术，进行放疗

B.根治性肾切除，同时切除癌栓

C.姑息性肾切除

D.姑息性肾切除+化疗

E.姑息性肾切除+放疗

— I _____ an old friend of mine yesterday.

— Did he recognize you at once?[ ]

A. by chance

B. on purpose

C. came across

D. met into