—What habits did you use to have?

—            . [ ]

A. I used to do little exercise.      

B. No ,I didn't.      

C. Yes ,I did.      

D. But now I'm on the football team.

需要首先进行的检查是

A．电子计算机X线断层扫描

B．选择性血管造影

C．纤维胃镜

D．超声引导下穿刺

E．放射性核素肝扫描