—________You look very depressed.

—I failed the driving test again. [ ]

A. So what?       

B. Take your time.

C. What's up?  

D. Not to worry.

肝细胞内圆形空泡

A．玻璃样变性
B．细胞水肿
C．纤维素样变性坏死
D．脂肪变性
E．钙化