— Did you look up the time of planes to Beijing?

— Yes, the earliest plane is       to leave at 5:30 am.

A．likely

B．probable

C．possible

D．due

门静脉输入肝脏的血量占肝输入血量的（）

A.20%～30%

B.30%～40%

C.50%～60%

D.70%～80%

E.80%～90%