Although there are various forms of answering skills in the discussion questions of college entrance examination materials, there are mainly three kinds: one is the discussion questions of narrative materials; The second is the discussion of cited materials; The third is the discussion of chart data. In teaching practice, we realize that mastering the Four Cardinal Principles is the key link to answer such questions. First of all, summarize the theme, and refine the essay questions made of materials, some of which are made of one material, some of which are made of many materials, all of which are parallel, comparative or progressive. Therefore, no matter how complicated the material topic is, it always revolves around a theme, highlighting and deepening a central idea, which requires people to read the material carefully.