Wang Houxiong's physics textbook explains it well, and there are different concepts in the textbook, because physics is particularly important for concept understanding. Chemical biology is mainly a backrest, so it is better to do more problems and find the shortcomings from the exercises. It is recommended to call. Mathematics suggests that we should focus on learning the basic concepts of textbooks in terms of concepts, instead of memorizing the definition of quadratic law too much, so we should choose fewer concepts and more teaching AIDS of different types in mathematics. Personal views, for your reference.