许多国家将性教育纳入了中学课程。

Many countries include ___sex education in their secondary school curriculum.

学校应该提供全面的性教育课程。

Schools should offer comprehensive ___sex education programs.

学校应该提供全面的性教育课程，包括生理知识和情感关系。

Schools should provide comprehensive ___sex education covering both biological facts and emotional relationships.