National volume? It is difficult to choose the last one to fill in the blanks. Not many of them are right, and the others are ok. For big questions, trigonometric functions are quite difficult to calculate, probability questions are more difficult to calculate, and derivatives and conic curves are relatively simple, especially derivatives. Although it is the finale, the difficulty is the easiest among the big questions, and the topic selection is quite satisfactory and the difficulty is average. Generally speaking, it's not difficult. Comparing the basic skills, those who are good at math usually do well in the exam, and those who are poor in math may do badly in the exam.