In Beijing Normal University, the math homework in grade five or three is not an advanced problem, while the grade five or three pays attention to synthesis. The practice of a special topic is difficult and simple, and it is relatively difficult to simulate the problems of group B and group C, but it is still a medium-level problem. The advantage of "May 3rd" is that it can be updated quickly. You can buy new questions of the year when you start school, and it will be slower to brush the questions. Personally, I feel that 53 questions are college entrance examination questions and selected simulation questions, but they may not be able to bet on college entrance examination questions.