Qidong exercise book is moderately difficult, and the biggest feature of Qidong middle school exercise book series is to design homework according to class hours. Including "classroom feedback", "homework in class", "consolidation after class" and "comprehensive inquiry". Mark the approximate difficulty level of each question with "A, B, C" at the beginning of each question, so as to facilitate students to choose the topic that suits them. However, multiple-choice questions and fill-in-the-blank questions only have answers, and there are fewer explanations, which requires higher basic requirements for students. The book "Three-year Simulation of Five-year Senior High School Entrance Examination" is divided into two volumes: full-truth exercise and full-solution. The whole practice topic is gradually advanced from easy to difficult. "Complete answer" is an aid to help students answer questions and explain in detail the difficulties, charts and questions in the textbook, which can help students better understand the textbook. But there are so many contents that few students will read the whole book carefully. Most of the test questions are piled up by the original questions and simulation questions of the senior high school entrance examination in various regions. It is not good to read too many such questions in the second stage of the first grade, which is suitable for the third grade students to brush the questions. In addition, with the reform and changes of the senior high school entrance examination, some topics in the book are best completed selectively, and it is recommended to use them under the guidance of teachers. Each chapter of Top Students' Learning Plan is divided into four parts: detailed explanation of teaching materials, problem expansion, excellent training and overall improvement. The core knowledge points and required test points of the textbook are clearly explained and the answers are clearly analyzed, which can help students improve their comprehensive ability. As the cover says, this is a "somewhat difficult" teaching aid book. Each chapter is very detailed, and it takes students time to study systematically to be effective. Recommend students with strong self-study ability.