1, from the content, the topics of Xueba's exam pocket book are selected from the real questions of major exams, which are very representative, while the topics of in-class training are all simulation questions, so it is better to help Xueba take the exam pocket book.

2. In terms of cost performance, official website, a pocket book for Xueba exam, sold 39.9 yuan, while official website, a gifted student in class, sold 45.9 yuan. Therefore, Xueba exam helps pocket books at a more affordable price with a higher cost performance.