1, the unified proposition of the Ministry of Education, the national college entrance examination volume 1 and the national college entrance examination volume 2 are based on the same examination outline, and the questions in the two papers are basically the same, with little difference. The main difference between National Paper 1 and National Paper 2 is the difficulty, and the difficulty coefficient of the two papers is also different. In the provinces that use National Paper 1 and National Paper 2 respectively, there will be no difference and influence between candidates' study and examination.

2. From the point of view of the areas where the national examination paper is used, the competitive pressure of the national college entrance examination is greater in the areas where the paper 1 is used, and less in the areas where the paper 2 is used. The national volume 1 is mainly applicable to the provinces with relatively developed education in eastern and central China, and the national volume 2 is mainly applicable to some provinces with less developed education in western China.

3. judging from the difficulty of the national volume, the overall difficulty of the national volume I >；; National volume 2; Single subject difficulty: ① Language: Volume 1 = Volume 2; ② Mathematics: The objective questions in Volume I and Volume II are sub-questions, which are quite difficult; (3) English: the difference is obvious, and it is difficult to write one volume > two volumes; 4 Synthesis: Volume 1 is physically difficult.