—It's going to rain. We can't go to the park.

— _______ pity it is! [ ]

A. What

B. What a

C. How

D. What an

哪种疾病合并房颤易引起晕厥（）

A.扩张型心肌病

B.肥厚型心肌病

C.二尖瓣关闭不全

D.主动脉瓣关闭不全

E.高血压病