What elective courses are there in high school? Please elaborate on the elective and compulsory subjects of science. Language 1-4 required, 5-8 optional (write it like this

Mathematics 1-4 is required, and 4- 1, 4-4, 2- 1, 2-2, 2-3 are required. Chinese1-five books and five compulsory courses, and the appreciation of ancient poetry and prose must be an elective course (at least this one). English 1-5 is required, and 6-9 is optional. Physics 1 and 2 are compulsory, and 3- 1, 3-2, 3-3, 3-4 and 3-5 are compulsory. Biology 1-3 must be tested, 1-3 must be tested. Chemistry 1 2 is compulsory, and elective 1 4, 5 is compulsory. (Elective courses in individual provinces and cities 3)