Two: I have an opinion. I wonder if you agree? It is what we call a difficult problem, but it is an organic combination of simple knowledge points. When reviewing, we should clarify the relationship and order and break them separately.
Three: Test every time you review a knowledge point. After reviewing a knowledge point, test and review the previous knowledge together like a snowball during the exam. It will get better gradually.
Four: You can cultivate confidence by trying to do some simple questions, and at the same time, you should do some difficult questions. Of course, you didn't mean to, just casually. After finishing, we should understand them as simply as possible. In this way, we will gradually get better and have confidence.
Wish you success! ! !