Senior one doesn't recommend doing college entrance examination mathematics. Because of the college entrance examination, he has a wide range of sad knowledge points, and many big questions in the college entrance examination are not taught by senior one, and even extend deeper on that basis. For example, when laying the foundation, it is not recommended to do things that take time and energy but have little effect. The first year of high school is mainly to lay a good foundation. You can practice those questions more when you are a freshman. But it is really not recommended to start doing college entrance examination mathematics in freshman year.