The betting points in the exam are accurate with a certain probability, and the key points are clear. There are fixed test sites every year, but the questions can't be the same, so they are not as accurate as you think. But 100 questions involve knowledge points, and we encounter many questions every year according to the knowledge points.

The key to betting depends on whether the questions given by the teacher will be closer to the examination method of this knowledge point and whether the small details are the same. This is a teacher's skill. But in general, the knowledge points are basically the same. The key is to look at the details, the ideas and the explanations.