The following are some suggestions for senior two students: 1. The book "Complete Answers to the True Questions of Senior High School Mathematics Competition" will have many questions related to Grade Two, and it is a good practice material. 2. The book "The Complete Solution of the Five Must-Test Points in Senior High School Mathematics" deeply analyzes the most common test points in senior high school mathematics, which is very useful for students preparing for the senior two mathematics competition. 3. The book "Preliminary Mathematics Competition in Senior High School" is aimed at beginners and suitable for senior two students. It covers a comprehensive knowledge of mathematics, and the topic is not too difficult, which is very suitable for beginners or students with poor foundation. 4. The number match network is. Schumer It is a good platform for brushing questions, with comprehensive contents, including mathematics, physics, computer and informatics. 5. Zhihu's math column contains a lot of high-quality math knowledge published by Zhihu's big names in the math competition, which can be used for reference. 6. The Western Mathematics Forum is a very active forum for the exchange of mathematics competitions, with a relatively high level. However, you can also have a selective look according to your own situation to strengthen your competition cognition and improvement.