"Please        your head and look at the blackboard, " the teacher said.    [ ]

A. grow  

B. carry  

C. bring  

D. raise

脑出血最常见的原因是（）

A.脑动脉炎

B.高血压和脑动脉硬化

C.血液病

D.脑动脉瘤

E.脑血管畸形