Before he was arrested, he had taken _______ one-month holiday, and stayed in the country with ________ 18-year-old girl, one of his students.

A．a, a

B．an, an

C．a, an

D．an, a

健康教育计划过程评价的目的是保障项目按计划顺利进行并（）。

A.按时进行

B.按要求进行

C.按分工进行

D.达到理想效果

E.达到预期效果