the centripetal effects of a homogeneous population同类人种倾向集中的作用Educators try to put pupils of similar abilities into classes because they believe that this homogeneous grouping is advisable.教育学家设法将学生按相近的能力分班,因为他们认为这种按同等水平...
They are homogeneous people.他们是同类人.Educators try to put pupils of similar abilities into classes because they believe that this homogeneous grouping is advisable.教育学家设法将学生按相近的能力分班,因为他们认为这种按同等水平划分班级的做法是明智的.The unemployed ...