Almost everyone has his own strengths and weaknesses. It is           others are weak that maybe you have a great advantage.

A．as

B．where

C．that

D．what

男，25岁，突然剧烈头痛、呕吐3h入院。有偏头痛史8年。体检：神志清楚，颈抵抗，凯尔尼格（Kernig）征阳性。四肢肌力正常。

该病最可能的病因是（）

A.动脉瘤

B.高血压动脉硬化

C.脑动静脉畸形

D.血液病

E.动脉炎