It's huge. In the multiple-choice part, the topic is relatively simple and there are not many questions. However, in the fill-in-the-blank section, there are some questions with a large amount of calculation, which need candidates' patience to calculate. In most cases, some topics are flexible and require candidates to think deeply and apply what they have learned, so it is relatively difficult as a whole. At the same time, the two real problems of mathematics in 2005 covered a wide range of knowledge, involving algebra, geometry, probability and statistics.