The essence of the second round of review is to check and fill in the gaps on the basis of special training. In fact, it is aimed at the training of various mathematical ideas, such as the combination of numbers and shapes, classified discussion and construction. The topic of each topic often comes from multiple chapters, with comprehensive contents. In the special review, if you find that you often make mistakes in an idea or a chapter, you should go back to the knowledge point or the chapter itself and carry out intensive review, which often means that there is a blind spot in a certain knowledge point in the first round of review. In addition, in the second round of review, we should do more simulation questions and real questions, be familiar with the questions of the college entrance examination, and pay attention to improving our problem-solving speed, because time is tight during the exam. Doing the problem too slowly will not be finished, and it will also have an impact on the mentality.