Difficult. The second model belongs to the complex questions of the college entrance examination. Generally, the first model and the third model are relatively simple, and 50% of the questions in the college entrance examination will be displayed in the second model test paper. Relatively speaking, the second model question is more difficult than the college entrance examination question. The second model has the function of checking, estimating and exploring the wind direction of the examination institute; It is also the basis for students' school knowledge test and ranking evaluation.