70% is 1, and 230% is different in each province. It is suggested to look at the examination papers in recent years and find it difficult to distinguish which part many topics belong to. The knowledge of function is used in almost every problem, which is closely related to analytic geometry and vectors and can be said to be the most important. Sequence often appears as a small step in the test paper problem. Solid geometry and probability generally have great problems, but they are generally not difficult. Trigonometric function often appears as a multiple-choice question or a small step in a big question, but it has always been the first big question to do a triangle. In addition, some knowledge points that are not very demanding, such as complex numbers, often give one or two choices to fill in the blanks.