河南省中考数学压轴题,从2000年至2002年连续三年出现了一个规律:图形是直角坐标系中的圆,集代数、几何知识于一题,全面考查学生的基础知识、基本技能、基本方法和综合运用知识探索、解决问题的能力,具有一定的探索性和开放性.不同年度又略有差异. The mathematics question in the examination of Henan province has a regular pattern from 2000 to 2002 for three consecutive years. The figure is a circle in a rectangular coordinate system. It contains a set of algebra and knowledge of geometry. It thoroughly examines students’ basic knowledge, basic skills, and basics. Methods and the ability to comprehensively use knowledge to explore and solve problems are exploratory and open-ended. There are slight differences between years.