--- I’ll come to see your performance at 9:00 tomorrow evening.

--- I’m sorry, but by then my performance ____ and I ____ reporters in the meeting room.

A．will have ended; will be meeting

B．will end; will meet

C．will be ended; am going to meet

D．is to end; will meet

法洛四联症中肺动脉口狭窄的典型改变是（）。

A.右心室流出道狭窄

B.肺动脉瓣狭窄

C.肺动脉主干狭窄

D.包括以上三项

E.肺动脉瓣赘生物形成