I believe that for many students, even after many years of graduation, they are very afraid of being asked questions. In their student days, the shadow of being asked questions always existed in their memories, so many students were so impressed by being asked these things in class that they felt very nervous when they were asked questions after work. If they can answer well, they will feel embarrassed when they stand in class. Students are asked questions for different reasons. Some are seen sleeping or absent-minded by teachers, so teachers will want to remind students in this way. However, after standing up, these students usually look puzzled and have no idea what the teacher is asking, and are stared at by the whole class. If they are criticized by teachers, they will also be laughed at by students. Students will feel particularly humiliated and unwilling to recall the scene at that time. Sleeping in class is very common in students, especially some scum who don't want to study. I will feel bored in class, so I will accidentally fall asleep in class. However, if students suddenly talk in their sleep or snore in a very quiet classroom, the students around them are expected to laugh, which seriously affects the discipline in the classroom. The student didn't expect that sleeping alone would also affect the class. If students are caught sleeping in class, I'm afraid they will get another lecture. Under normal circumstances, the teacher will make these students stand up and listen to the class in order to wake them up. But sometimes, for these students who want to sleep, they will accidentally fall asleep when they stand up, and the teacher can only watch this situation silently, and they can't disturb the classroom discipline because of a student.