At the end of the first year of high school, there will be a historical geography exam. You don't need to study history and geography after taking the science exam. Liberal arts students will take physical chemistry and biology in the second year of senior high school, so they don't have to study after the exam. Especially in the second year of high school, I began to take biology classes.
In mathematics, it is suggested to borrow some high school mathematics textbooks from high school students. Most of the high school mathematics textbooks are not difficult, and the extended content will be mentioned again by the teacher. If you have a strong self-study ability, you can also buy some high school reference books. It is not recommended to buy things like cohesion counseling. Its content is nothing more than the repetition of junior high school, and it rarely involves senior high school mathematics.
Recommended counseling books: Complete Interpretation of Middle School Textbooks (Xue Jinxing) and Textbook Analysis (Li Chaodong).