治外感风邪头痛，宜首选（）
A.川芎茶调散
B.九味羌活汤
C.羌活胜湿汤
D.羚角钩藤汤
E.天麻钩藤饮
参考答案：A
He to Dongying many times, so he knows every corner of it.
A．went
B．will go
C．has gone
D．has been
尽管HF的相对分子质量较低，试解释：为什么HF的沸腾温度(19.4℃)要比HCl的沸腾温度(-85℃)高
