质疑是学生打开知识宝库的钥匙,是提高学生自学能力,达到“教是为了不教”理想教学境界的有效手段。教给学生质疑问难的方法,将使学生终身受益。从创设质疑氛围和开拓质疑途径来谈。 Questioning is the key to students to open the treasure trove of knowledge, which is an effective way to improve students’ self-learning ability and achieve the goal of teaching to avoid teaching. Teach students to ask questions difficult way, will enable students to benefit for life. From the creation of doubt the atmosphere and open up the question of ways to talk about.