National 1 volume. Suzhou senior high school entrance examination is a part of education, and the multiple-choice questions are self-made, and the difficulty of each session is different. Among them, the mathematics difficulty of Suzhou senior high school entrance examination in 2023 is national 1 volume, which is very difficult. Mathematics is a discipline that studies the concepts of quantity, structure, change, space and information, and it is a general means for human beings to strictly describe the abstract structure and mode of things, which can be applied to any problem in the real world.