师生之间的问答是最常用、最重要的互动交流方式。已有研究证实,学生对教师引导的问答活动参与程度越高学习效果越好,问答包括听和说,对多数学生来说,相对于读和写、听和说越有激发作用。问答行为可以给学生提供某种线索,使学生注意教材中的某些特定信息;问答行为可以为学生提供练习和反馈机会,学生要回 Questions and answers between teachers and students are the most common and important way to interact with each other. It has been confirmed that the higher the student’s participation in teacher-led question and answer activities, the better the learning effect. The questions and answers, including listening and speaking, are more inspiring to most students than to reading, writing, listening and speaking. Q & A behavior can provide students some clues to make students pay attention to certain specific information in the textbook; Q & A behavior can provide students with practice and feedback opportunities, students should go back