He was told that it would be at least three more months______he could recover and return to work.

A．when

B．before

C．since

D．that

关于少女经前卫生指导错误的是（）。

A.使少女懂得月经来潮的道理和意义

B.经前期要保持情绪稳定，精神愉快

C.养成记录月经周期的好习惯

D.注意保暖

E.最好使用塞在 * * 内的棉条