我们知道:整式、分式、二次根式是初中数学“代数式”中重要的三个类型.新课标对二次根式的考查要求降低后,分式的考查地位在“式”这一领域日渐突出,分式求值问题也成为中考试卷的一个新亮点,这些试题既考查了同学们的基础知识掌握情况,又不失灵活性,显得多姿多彩,别具一格.现采撷几例中考题,供同学们参考.一、规律求值这类问题要求考生根据题目提供的材料或几个特殊的例子,进行观察、类比、发现、归纳,从而找出其中蕴 We know: the whole, fractional, quadratic root is the junior high school mathematics “algebraic ” important three types of new curriculum standard for secondary root examination requirements reduced, the fractional test status in Gradually prominent in this area, the problem of fractional evaluation has also become a new bright spot in the examination paper, these questions not only examine the students grasp the basic knowledge, without losing the flexibility, it is colorful, unique style. Questions for students to refer to I. First, the law of evaluation Such questions require candidates to provide materials according to the subject or a few special examples, observation, analogy, discovery, induction, to find out which Yun