I can't remember where I have put that book.Maybe they are ___ which one is not correct.

A．missed

B．lost

C．gone

D．missing

女子18周岁月经尚未初潮，应诊断为：

A．生理性闭经

B．病理性闭经

C．暗经

D．继发性闭经

E．原发性闭经