以阿片类药物为主的麻醉性镇痛药不包括（）。
A.吗啡
B.哌替啶
C.氯胺酮
D.芬太尼
E.雷米芬太尼
参考答案：C
四边形有______条直的边和______个角．
_____ the fact that there was great prejudice against women entering men's profession then, she
succeeded as a manager of a big company. [ ]
A. While
B. In spite of
C. Despite of
D. As
