The top students' study plan is good, the examples are more complete than others, and the arrangement of after-class exercises is reasonable. I bought the two-speed learning method in junior high school, but it's not good, but my skin looks better, and the math that is completely interpreted in the textbook is better. I suggest you buy this one for math, and the others for top students. If you feel bad, you can buy a Wang Houxiong study plan (in fact, choose one, it is enough to do it thoroughly). I wish you progress in your study!