Secondly, you should be confident, encounter problems that can't be solved, don't doubt your knowledge composition, believe that you have the theory and ability to completely solve this problem, all you need is to find that breakthrough!
Third, you can teach yourself some mooc courses in high school and study on websites such as online education of wisdom tree. Pay attention to the selective study of knowledge points and select the knowledge points that you don't understand. This can improve learning efficiency.
Generally, these three points can be achieved, and the mathematics in the college entrance examination can at least be guaranteed at 120!