1. Set and simple logic, function and derivative, sequence, trigonometric function, plane vector, inequality, simple geometry of line and circle, conic curve, line and plane, binomial theorem of permutation and combination, probability and statistics.

2. Calculus can only be learned in advanced mathematics, and it is also involved in high school, but it is relatively simple, indefinite integral and definite integral.

3. No, for example, the probability of high school mathematics is very good, and students are very interested in connecting with real life.