— Can you tell me the way to Renhe Middle School?

— _____ [ ]

A. Yes, please.

B. No, I can't.

C. Don't ask me.

D. Sure.

考虑锌缺乏时以下的检查中哪项不够理想（）

A.发锌测定

B.治疗性试验

C.血清锌测定

D.餐后血清锌浓度反应试验

E.根据缺锌的病史和临床表现