Though _____ in the accident, the bus driver did all he could to help the passengers to safety.

A．injuring

B．injured

C．to injure

D．having injured

男性，50岁，糖尿病6年，发热3天，咳痰少量带血丝，肺部未闻哕音，胸片右肺上野及中野密度较淡浸润影，似有透光区，血WBC9.2×10⁹/L。

应首先考虑哪项诊断（）

A．肺结核 

B．金葡菌肺炎 

C．肺癌 

D．克雷伯杆菌肺炎 

E．肺囊肿继发感染