The advantage of each lesson exercise is that it has a solid foundation and fits the textbook very well. Suitable for children with poor foundation, and basic training can be carried out with the above intensive compilation. A volume of completed test questions has been tested by the school-level examination. The difficulty of the test questions conforms to the actual situation of students' learning, and it can comprehensively examine students' mastery of the knowledge they have learned, with high reliability and validity.