脑血栓最常见的病因为（）
A.脑动脉粥样硬化
B.高血压病伴发的动脉病变
C.脑动脉瘤
D.脑动脑炎
E.动静脉畸形
参考答案：A
So many people! Could I stand here?
____ Don't you see the sign "Line up, please"?
A．My pleasure
B．No problem
C．Of course
D．Sorry, you can't
属于瘕者是（）
A.有形，固定不移，痛有定处
B.瘕聚成形，聚散无常，推之可移，痛无定处
C.二者均是
D.--者均不是
