局部激素适用年龄限制与安全性的关系是()。
A.正相关
B.负相关
C.无相关性
D.视情况而定
参考答案:C
There have been several new events ________ to the program for the 2008 Beijing Olympic Games. [ ]
A. add
B. to add
C. adding
D. added
山莨菪碱
A.胃肠痉挛B.气管内插管C.晕船D.青光眼E.重症肌无力