Textbook help is ok, very easy to use, and I was recommended by others. Cooperate with the teaching materials and explain the knowledge points in detail. On the right side of each knowledge point, there are supporting examples to help us understand, and all kinds of questions are also comprehensively summarized. There is also a summary of how to solve such questions and exercises. Each section of the college entrance examination help can let us intuitively see how the previous college entrance examination took this section, as well as the competition questions and exercises in this section, so that we can master it.