对一些经典的试题进行深入研究,找到其命题规律和蕴藏的丰富多彩的数学知识、数学方法,将对高三的复习备考指明方向,提高备考质量,起到事半功倍的效果.本文对2016年兰州的一道高考模拟试题展开探究与推广.题目已知椭圆C:x~2/a~2+y~2/b~2=1(a>b>0) In-depth study of some of the classical test questions, to find its propositional law and contains a rich and colorful mathematical knowledge and mathematical methods, will point out the direction for the senior high school review preparation, improve the quality of the pro forma, play a multiplier effect.This article Lanzhou A simulation test questions to explore and promote college entrance examination. Subject known oval C: x ~ 2 / a ~ 2 + y ~ 2 / b ~ 2 = 1 (a> b> 0)