先天性胆管囊性扩张症可发生在（）
A.肝内胆管
B.肝外胆管
C.肝内胆管和肝外胆管均可发生
D.胰管
E.胆囊管
参考答案：C
— I'm sorry. I ______ at you the other day.
— Forget it. I was a bit out of control myself. [ ]
A. shouldn't shout
B. shouldn't have shouted
C. mustn't shout
D. mustn't have shouted
计算贷款指定期数应付的利息额应使用（）函数。
A.FV
B.PV
C.IPMT
D.PMT
