This seems to be related to the specific situation of schools in various regions! The following are from our school for reference only: 5 compulsory books, 6 elective books, and one * * * is11; Compulsory: compulsory 1, compulsory 2, compulsory 3, compulsory 4 and compulsory 5; Electives: Elective 2- 1, Elective 2-2, Elective 2-3, Elective 4- 1, Elective 4-5.

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