口腔真菌感染时，漱口液应选择()
A．1％～2％龙胆紫
B．1％～3％碳酸氢钠溶液
C．O．1％利凡诺溶液
D．0．02％呋喃西林
E．朵贝液
参考答案：B
True friendship is like sound health, ________ the value is seldom known until it is lost.
A．from which
B．which
C．of which
D．whose
下面两联都是对联的上联，请选择其中一联对出下联。
（1 ）齐心构建和谐社会
（2 ）沉着镇静，满怀信心赴考场
答： __________________________________
