2012年江苏省高考数学卷,全省师生普遍感觉较难.其中,数学Ⅰ试题的第19题解析几何试题则是难倒了一大片考生.考后好多考生抱怨圆锥曲线这道题运算量太大,证明太难.笔者研究后发现,主要原因是考生在平时复习中,没有掌握解析几何题的通性通法:即通过坐标系将解析几何问题转化为代数问题以及平时高 Jiangsu province college entrance examination math volume in 2012, the province teachers and students generally feel more difficult.Among them, the first question of mathematics I questions analytic geometry test is a large piece of test questions.A lot of candidates complain about the conic Too large to prove too difficult.The author found after the study, the main reason is that the candidates in peacetime review, did not grasp the general problem of analytical geometry problem: that is, through the coordinate system will resolve the geometric problems into algebra problems and usually high