下列哪一项不是自发性蛛网膜下腔出血的原因
A．颅内动脉瘤B．动静脉畸形C．烟雾病D．动脉硬化E．抗纤溶治疗
参考答案：E
What happened __________ your tail? [ ]
A. from
B. to
C. for
D. with
