You can choose some topics at the end of the chapter, and you'd better ask the teacher to draw them for you so as not to waste your time. The advantage of this book is that most of them are real college entrance examination questions, which can let you see the college entrance examination questions as soon as possible. These questions have been polished repeatedly by college entrance examination experts, and they are impartial and involve a wide range, which is conducive to review at the end of the chapter.