Generally speaking, high school mathematics is to do more problems in one sentence. I took a course that year. In the first year, I only got 82 in math, and in the second year 138. Actually, mathematics is not difficult. Do more questions, and you will find that the big questions on the paper are all the same. Generally, trigonometric function solid geometry is a sub-topic, especially solid geometry and plane vector kill all problems. As for the second problem of analytic geometry, we can't give up, or we can give up the last problem of the last big problem. Now there will be a set of papers in two or three days, and the college entrance examination will be a success. Good luck.