实践告诉我们，听课是研究课堂教学，检查了解教学效果，研究和改进教学方法和教师互相学习的重要手段,也是各级教育行政部门和学校的领导,了解教学情况,研究教法改革的良好 Practice tells us that listening is the study of classroom teaching, checking the effectiveness of teaching, studying and improving teaching methods and the important means for teachers to learn from each other. It is also the leadership of education administrative departments and schools at all levels to understand the teaching situation and study the reform of teaching methods.