Usually, the difficulty level of the first survey is the closest to that of the college entrance examination, so there is a saying that what is scored in the college entrance examination and what is scored.

The relative difficulty of the second inspection meeting, the increase of difficulty aims to deepen the depth of students' knowledge.

As for the three tests, the difficulty will be reduced accordingly, which is the same as or simpler than the first test, aiming at enhancing students' confidence.

At the same time, the focus of the three surveys is different.

The coverage of the first inspection is the most comprehensive, and the second inspection is the most difficult and in-depth, and it loves to get into the dead end. The third inspection will become a pure textbook, paying more attention to returning to textbooks and eliminating loopholes.

Therefore, the difficulty of the three exams should usually be lower than or parallel to the difficulty of the college entrance examination.