Difficult. The first mock exam of the college entrance examination, the questions prepared by the school will be more difficult, especially the math questions. Harbin No.3 Middle School infers the number of people who can be admitted according to the first mock exam. Simulated college entrance examination refers to simulating the college entrance examination from the aspects of form and examination paper, so that students are not nervous when taking part in the real college entrance examination. The difference between liberal arts and science mathematics is that, in terms of difficulty, the content of liberal arts is slightly simpler than that of science, whether it is normal study or college entrance examination. Judging from the content of the examination, the college entrance examination of liberal arts and mathematics is not as comprehensive as that of science, and almost all knowledge points of science can be involved, while some liberal arts are not tested. It depends on the examination syllabus of that year.