圆锥曲线是高中生解析几何学习中的一个难点。

Conics is a difficult section in the Analytic Geometry for senior high school students.

第三部分：《大纲》与《标准》在圆锥曲线部分的比较与分析。

Third part:"Program" and "Standard" in conic partial comparisons and analysis.

直线被圆锥曲线截得弦的中点问题，是解析几何的重点和难点。

The problems about the midpoints of the chords cut by the taper curve are the most critical and difficult in analytic geometry problems.

但是在我任教的临夏中学的学生对这一内容掌握的不是很好，说明学生在圆锥曲线的学习中存在着障碍。

But there exit many problems among the students in Lin Xia Middle School, where I am working. It has always been a difficult point for the students to master.