—How about ________ job you were offered last week?

—Not so bad, but I ran into difficulties at the very beginning.

A．the　　　

B．an

C．a　　　

D．不填

潜伏发绀型先天性心脏病不包括下列哪项（）

A.房间隔缺损

B.室间隔缺损

C.动脉导管未闭

D.肺动脉瓣狭窄

E.法洛四联症