已知等腰△ABC的两边长为4,5,则它的周长为( )
13或14
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