According to the situation of Guangdong National College Entrance Examination in 2007 07- 10/0, some major questions in the series (10 has no major questions) are based on functions or quadratic equations in one variable (usually in the last question). The main test point is to find the general formula of recursive sequence by construction method, and to prove the inequality of sequence (induction and scaling method) and the sum of sequence. Small topics are mainly multiple-choice questions, which are usually the basic properties of arithmetic geometric progression.