— Lily plays the violin wonderfully. How I wish I could also do it well.

—  If you keep playing it frequently,  you are sure to do so. As we all know, "       ".[ ]

A. Practice makes perfect            

B. Every beginning is hard

C. Failure is the mother of success        

D. Actions speak louder than words

多形性红斑局部治疗原则（）

A.消炎

B.收敛

C.止痒

D.抗病毒