The questions inside are all real questions about choosing a professional exam, which is very representative. They can help students to consolidate their foundation, exercise their thinking ability, improve their academic accomplishment and review their previous knowledge.

5-3 synchronization series is very discouraged, the summary is not detailed, and the topic is not very good. As long as the A/B version is basically N books for high school students, there is nothing to evaluate. The biggest reason is that paper tastes good and small.