—Serina has been watching the TV series the whole night.

— ________.

A．So her parents have

B．So have been her parents

C．Her parents have been so

D．So have her parents

以扩张小动脉为主的扩血管药物应慎用于（）。

A.重度二尖瓣关闭不全

B.重度二尖瓣狭窄

C.重度主动脉瓣关闭不全

D.室间隔缺损

E.扩张型心肌病