— Have you finished reading Jane Eyre?

— No. I ____ my homework all day yesterday. [ ]

A. was doing

B. would do

C. had done

D. do

开胸后造成的呼吸生理变化，包括（）

A.纵隔摆动

B.反常呼吸

C.肺萎陷

D.V/Q问比率异常

E.纵隔移动