Tai is betting on the test paper. Need, not only to have a certain grasp of key knowledge, but also to analyze the real questions, which are the key contents of the exams in recent years, and are better than the examination papers. Bing Zheng, who has done cross-examination education, is very accurate in "Three sets of essay questions for the final sprint of economics postgraduate entrance examination". Therefore, Bing Zheng wrote a good article.