Zhu Haokun's 2000 questions based on the real questions in the college entrance examination mathematics handout should be combined with online courses and pay attention to the key points. This book focuses on problem-solving skills and topic coverage. I'm not familiar with the most basic formula, so I'd better read the textbook first. No matter how excellent this book is, it is only a teaching aid. More efforts and energy should be put into schools. Don't expect this book to realize myths such as comeback and counterattack. Only the brushed supplementary books are the best, otherwise it is meaningless.