蛛网膜下腔出血最常见的病因是
A．高血压B．脑动脉粥样硬化C．先天性脑底动脉瘤D．脑血管畸形E．血液病
参考答案：C
— Patrick has won $ 1,000.
— _____? He isn't any happier. [ ]
A. So what
B. So where
C. So why
D. So how
畜牧场总平面规划的原则？
