First, I read Li Yongle's book review. Almost everyone in this book has to take a math test. If you have time, let's have a look at Li Zhengyuan or Changyu's. Li Zhengyuan's book has a comprehensive summary of questions and exercises, but the answers to some questions in his book are rather troublesome. Then, Zhang Yu got 18 in math test. I feel that some questions of Changyu are more flexible. After reading the book, I began to brush the questions. Choose one of the questions Zhang Yu 1000 and Tang Jiafeng 1800. I chose Tang Jiafeng at that time, because I felt stupid. I might not be able to do the same type of questions at one time, so I had to read more and choose more questions until the end of the summer vacation. I began to brush the real questions in September when the third year of high school started. I bought the real questions of Li Yongle over the years, did them twice, and then bought the real questions. In order to get familiar with the feeling of the examination room, I also bought Zhang Yu's sprint questions from Tang Jiafeng and Li Yongle. I feel that Changyu's is more difficult, but after all, it is not the real question, so I read it almost once. Then I came back to see the real question. Some students around me did Li Lin, but I personally have prejudice against him. I think it's a bit unreliable to give my future to a person born on a mortgage, so I didn't look at him. It is said that 18 got 80 in the postgraduate entrance examination. 19 didn't get much pressure, so I don't trust him very much, so I don't have any opinions. Anyway, the above is the book I read when I took the postgraduate entrance examination. 19 postgraduate entrance examination, engineering major, 985 ashore.