According to the official explanation, Volume A and Volume B are the propositions of the same proposition group according to the syllabus and the new curriculum standard, and the setting, difficulty and discrimination of the test questions are all based on the same standard. When using Volume A or Volume B as the proposition in the joint recruitment districts and counties, they are decided by lottery. There is nothing unfair. Can fully stimulate their enthusiasm for learning, so as to achieve twice the result with half the effort. Set a certain number of training questions, the content is novel and rich, and the questions are from easy to difficult. Starting from students' knowledge structure and thinking training, with thinking training as the core and vivid and diverse forms as the theme, we can inspire problem-solving ideas and improve problem-solving ability.