函数是贯穿在中学数学中的一条主线 ,每年高考对函数问题考查所占的比例都相当大 ,可以说是常考常新 .特别是函数的新概念型题 ,设计思想开阔 ,情景新颖脱俗 ,不是以知识为中心 ,而是以问题为中心 ,不拘泥于具体的知识点 ,而是融数学知识、方法、原理于一体 ,突出对具体情境应? The function is a main thread that runs through middle school mathematics. Each year the college entrance examination has a large proportion of the examination of function problems. It can be said that it is often a new exam. In particular, a new concept of functions, the design concept is open, the situation is novel, It is not knowledge-centered, but problem-centered. It does not rigidly adhere to specific knowledge points but integrates mathematics knowledge, methods, and principles. It should emphasize the specific situation.