-- Why didn’t you go to Mike’s birthday party yesterday?

-- Well, I _____, but I forgot it.

A．should

B．would

C．should have

D．must have

支气管扩张最有意义的体征是（）

A.局限性哮鸣音

B.局限性湿啰音

C.贫血貌

D.消瘦

E.杵状指