I don't think I did very well in this midterm exam, so let's just say math. In this exam, I realized that it is not enough to have written knowledge. I need to do more extracurricular exercises, expand my knowledge and make my math grades climb steadily. In addition to extra-curricular tutoring, we should be careful, because it is possible that in the exam, the formulation of a question is correct, but the final calculation is wrong. This situation also happens from time to time. We must not be careless and take it lightly, otherwise we will regret it.