Conic curve is included in analytic geometry, which accounts for a large fraction and is the key point. Set, polar coordinates, parametric equation and solid geometry are the simplest contents in high school mathematics. But parameters are an important way to solve the problem: use them when you know them. Arranging and combining, mathematical expectation will generally only give one of the fill-in-the-blank questions, and the probability of giving a big question is small. The triangle is mainly at the back, and there is no big problem. Besides, there are computers in the Shanghai college entrance examination, so just pay attention to the brand. Inequality is the foundation, so we must fully understand it ~