—_____ were you born, Mike?

—I was born in Beijing.  [ ]

A. Where    

B. When   

C. How    

D. Why

胸部CT常规为仰卧位，需同时采用俯卧位的是()

A．肺癌的分期诊断 

B．观察肺内肿物形态 

C．测量肺内病变大小 

D．了解胸水流动性 

E．对肺弥漫性病变观察