The second mode is in late March. The main purpose of the mock exam is to improve students' comprehensive ability, adaptability and even endurance. The first/second model of senior three is very important and will be more formal than other exams. The simulated examination time of college entrance examination varies from province to province. The model test time in most provinces is around March-April. Compared with the second mode and the third mode, the second mode is much more difficult. After all, with the acceleration of review rhythm and the progress of review depth, students' mastery of knowledge is also rapidly improving. So the second mode is more like a touch on the "ceiling" of students. We should adjust our mentality and prepare for the exam in a scientific and orderly manner. Near the second mode, students study harder and have higher and higher expectations and requirements for themselves, so we should pay attention to adjusting the state before the exam.