You might wonder how this kind of animal ____ to live without eating for so many months.

[      ]

A. keeps

B. succeeds

C. manages

D. tries

对单纯疱疹病毒性脑炎患者进行头颅CT扫描可出现（）

A.完全正常

B.肯定有异常发现

C.局灶性低密度区

D.低密度病灶区出现点状高密度影

E.病变区不会有高密度影