急性小脑幕上硬膜外血肿，最常见的出血来源是（）
A.脑膜中静脉
B.脑膜中动脉
C.静脉窦
D.骨折的板障静脉
E.脑表面桥静脉
参考答案：B
--- I’m sure I will get good marks in the final exam.
--- I believe your parents will ______ your study if you try your best.
A．be satisfied with
B．be angry with
C．be bored of
D．be worried about
消化道中毒后洗胃，每次注入洗胃液量最好为
A．100～150mlB．200～250mlC．500～600mlD．1000mlE．1500ml
