放射性核素脑血管造影分为三个时相：①________、②__________、③__________。
参考答案：动脉相 、毛细血管相 、静脉相
— How soon can you finish this job?
— Two days _____ enough for me to finish the work. I need a week. [ ]
A. isn't
B. aren't
C. is
通于阳跷脉的八脉交会穴是（）
A.外关
B.申脉
C.后溪
D.昆仑
E.足临泣
