在近两年的中考数学试题中,出现了许多与圆有关的探究型试题,这种试题酷似一个小研究课题,其基本模式是将已知问题中的几何图形按照一定的规律进行变换,让考生按照从特殊到一般的认识规律去研究问题,探究结论的变化情况.本文列举几例这类试题,并对其命题 In the recent two years of mathematics examinations in the senior high school entrance examination, there have been many inquiry questions related to the circle. This question resembles a small research topic. The basic model is to change the geometry of the known problems according to a certain law. Candidates study the problem according to the special-to-general cognition law, and explore the changes in the conclusion. This article lists a few examples of such questions and their propositions.