蛛网膜下腔出血的并发症有()
A.再出血
B.脑血管痉挛
C.癫痫
D.脑积水
E.头痛
参考答案:A, B, C, D
The pilot asked all the passengers on board to remain _____ as the plane was landing. [ ]
A. seat
B. seating
C. seated
D. to be seating