1, the difficulty is different: the experimental class optimization training is a relatively routine examination, the topic is relatively simple, and the experimental class optimization test paper is more difficult and comprehensive. The difficulty ladder is gradually deepened and the thinking is gradually broadened.

2. Different emphases: The experimental class improves the big test paper by combining the teaching materials, extends to the direction of extracurricular background content expansion and innovation, and pays attention to testing students' comprehensive, expanding and applying innovation ability, so as to improve the level of testing requirements. The improvement training of the experimental class is an after-class exercise of some basic problems.