I encountered this problem before the college entrance examination. After the math exam that day, I always felt that there was a big problem that I didn't get right, but I didn't find the reason after checking it several times. After working for two hours at home, I finally worked out the problem. Because of a small oversight, the whole result was wrong, and I lost the game. At that time, I felt really collapsed, because the teacher has been stressing to himself how many people can fall behind in the college entrance examination. That big question 12 points, I can't get a point. I haven't fallen asleep tomorrow night, and I have been forcing myself to take a good exam the next day. Although it has an impact, it is good that it has little impact.