简述对后进群众的转化可分为三个阶段。
参考答案：认识阶段、反复阶段、进取阶段。
以下外用药处方正确的是（）。
A.龙胆紫
B.氧化锌
C.水杨酸
D.硫磺
E.10%硫磺软膏
What does the man mean [A] Wang Wei is always late. [B] Wang Wei was late yesterday. [C] Wang Wei was on time yesterday.
