—  Oh , it is already 9:00, but Tom is still in bed.

— He ______ late last night to watch the football match. [ ]

A. may stay up                  

B. must have stayed up        

C. could stay up                

D. should have stayed up

肝细胞弥漫性细胞水肿主要见于（）

A.急性重型肝炎

B.亚急性重型肝炎

C.酒精性肝炎

D.急性普通型肝炎

E.慢性肝炎