Sort out compulsory courses, elective courses, etc. "A Book" mainly sorts out the compulsory and elective contents (including the latest exam outline), and is equipped with scribbled notes of the top candidates in the national college entrance examination, which matches the units or chapters of the textbook. This book has a complete knowledge of textbooks for three years in high school. It is more difficult to subdivide the content of the latest textbook outline into directions, conduct in-depth research, and equip the textbooks with class records of top scholars. Bit by bit, it can be seen that the champion has a deep understanding of textbooks and is proficient in reading knowledge. Always take exams, and high scores must be seen!