According to the different requirements of the school, it is generally No.2, but for example, No.1 in Tsinghua Examination (probability and mathematical statistics are more than No.2). Professional courses look at the relevant requirements of online enrollment and employment in schools, and most of them have physical chemistry. In addition, the school will add some subjects of its own. For example, Beihang University classifies specialized courses as material synthesis, which is actually materialization and research. In addition, the second exam takes high physics and high chemistry. Sincerely answer, hope to adopt, thank you!