浙江省数学竞赛试题出题常常表述十分简洁,但仔细思考往往能挖掘出十分丰富的内涵,因此好题、好解法、好的推广形式频频出现.由于椭圆、双曲线、抛物线之间特定的联系和区别,不仅可以将有关圆锥曲线的问题设计得形式优美,还可以由点及面推广到圆锥曲线的一般形式,通过合理的运算,进而得到完整的结论. Zhejiang mathematics contest questions often very simple statement, but careful thinking often can dig out a very rich connotation, so a good question, good solution, a good form of promotion frequently occur due to the specific relationship between elliptic, hyperbolic, parabolic And the difference, not only can the conic problem be designed in a graceful form, but also can be generalized from point and surface to the general form of conic curve, through reasonable operation, and then get the complete conclusion.