Mathematics is the most important, with high scores. You must learn it well. No matter what subjects you choose, you must master them well. Physics ranks second and is difficult to learn. We must spend more time and practice. Biology comes last. Compared with the other two courses, biology is relatively simple, and the connection between each class is not very strong, mainly the backrest. Therefore, in the end, it is also the most difficult one of the compulsory five college entrance examinations in mathematics, and compulsory three is very simple. There are basically no schools.