一、高考命题趋势综观历年(特别是近两年来的试题),不难发现:以解析几何知识为载体的求参数取值范围的问题,经常出现在高考模拟题和高考试题中,这类问题不仅涉及知识面广,综合性强,变量多,应用性强,而且情景新颖,能很好地考查学生的创新能力和潜在的数学素质,一直是高考的热门题型. First, the college entrance examination proposition trend Over the years (especially in the past two years), it is not difficult to find: to resolve the geometric knowledge as a parameter seeking the value range of the problem, often appear in the college entrance examination simulation questions and college entrance examination questions, such problems Not only involves a wide range of knowledge, comprehensive, variable, strong applicability, and the scene is novel, can well examine the students’ innovative ability and potential mathematical qualities, has been a hot topic type of college entrance examination.