--Excuse me, teacher, can I ask you something about the last class? I didn’t quite understand it.

--Sure! Please feel _________to ask me anything!

A．fine

B．free

C．OK

D．right

下列对蜜丸的贮存操作哪个是不正确的()

A．贮存于干燥处

B．注意包装完整

C．丸药表面吸湿，应立即拣出扔掉

D．梅雨季节应放于石灰缸内干燥

E．夏秋季经常检查，发现变质，立即拣出