― What sort of friend do you want to have? Someone beautiful?

― Well, it ____ be beautiful―that's not important. [ ]

A. mustn't

B. can't

C. won't

D. needn't

快速鉴别头癣类型的方法是（）

A.镜检

B.培养

C.伍氏灯

D.病理

E.视诊