俗话说:“学源于思、思源于疑。”常有疑点,才能常有思考;常有思考,才能常有探索,才能常有创新。我国的教育家对质疑问难也很重视,他们提出:“学则需疑,大疑则大进,小疑则小进。”因此,教师一定要鼓励学生提问,要保护学 As the saying goes: “learn from the thinking, from the source of doubt.” “There are often doubts, can often think; often think, to often explore, in order to often innovation. The educators in our country also attach great importance to questions and questions, and they put forward the following: ”Learning should be suspicious, suspicious and aggressive." Therefore, teachers must encourage students to ask questions and protect studies