Opening : the opening of teaching content and opening of thinking method represent that when meeting problem students should be lead to view it with broader sights and be inspired to hld suspicious attitudes . complete opening among subjects means building transverse relation among subjects so that students can consider more angles . 2 开放性：教学内容和思维方式的开放是指把学生的眼光由课堂引向广阔的社会生活，鼓励学生勇于和善于“怀疑” ；而学科之间的全面开放则是在学科之间建立横向联系，使学生在更大的范围内和从更多的角度思考问题。
