1. High-quality papers: The last six sets of papers on Du Wen Mathematics were written by experienced professionals, and the questions were of high quality, which met the examination requirements. After strict screening and optimization, the test paper can help students better understand the test questions and difficulties and improve their ability to take exams.

2. The actual situation of the exam is close: the topic setting of the last six sets of Du Wen's mathematics is very close to the actual situation of the exam, including the type, difficulty and propositional style. By doing these papers, students can better adapt to the examination forms and requirements, understand the difficulties and key points of the examination in advance, and make full preparations for the examination.