Wrong problem book of mathematics and physical chemistry
Of course, it's not too late. Wrong questions are essential in every process of knowledge accumulation, because it will help you record the traps that may be set by each knowledge point and help you form a careful way of thinking. . . . However, not every subject needs a wrong textbook. For example, mathematics and physics require rigorous thinking, so there should be a wrong book. In addition, Chinese and biology also need one (if you have a notebook, you don't need it), and chemistry doesn't. The main thing to remember is that you can remember it firmly with certain memory methods. . . I hope it helps you. . Because I am a science student, I have no personal experience in some subjects of liberal arts, so it is not convenient to give advice. . . )