During the internship, the author also found that some students thought that the pre-class reminder was just to complete the homework assigned by the teacher, it would not affect the efficiency of listening to the class and learning, and had no direct impact on the classroom learning. There are even students who think that the level of academic performance has nothing to do with the pre-class preview. If you want to improve your grades, you only need to spend more energy in listening to the class and consolidate and review after the class. No.