温病后期，夜热早凉，热退无汗，舌红少苔，脉细数者，治宜选用
A．当归六黄汤
B．青蒿鳖甲汤
C．秦艽鳖甲散
D．清营汤
参考答案：B
石菖蒲横切面可见
A．油细胞B．油室C．树脂道D．油管E．乳管
--_______ does she chat with friends on the Internet?
--Once a week.
A．How long
B．How much
C．How many times
D．How often
