—What do you think of the concert
—I really enjoy it. I didn't expect it was ______ wonderful.

A. as



B. more
C. most



D. very

不属于吸气性呼吸困难的情况是（）。

A.气管痉挛

B.气管管腔狭窄

C.气管异物

D.喉癌

E.支气管哮喘