202 1 Zhejiang college entrance examination mathematics volume adheres to the proposition characteristics of "low starting point, slow gradient, multiple levels and good distinction", controls the difficulty standard of "beginning and end", gradually deepens the difficulty of various types of questions, disperses the finale, and achieves "easy to handle and difficult to handle", which is highly consistent with the psychological endurance of candidates in predicting the difficulty of topics, so the last two big questions are relatively difficult.