颈内动脉海绵窦瘘最重要的检查手段是（）
A.体格检查
B.实验室检查
C.头颅CT
D.MRI
E.脑血管造影
参考答案：E
— Do you remember the experiment we did together many years ago?
— Yes, _______ we did it yesterday. [ ]
A. as if
B. even if
C. only if
D. if only
下列哪项不是地道药材
A．四川的附子
B．江苏的薄荷
C．东北的五味子
D．山东的苍术
E．云南的茯苓
