First of all, books must be genuine. Secondly, the cost of books is actually very low, but in the past, the cost of physical bookstores was higher, so in people's impression, books are genuine only if they are expensive. Now the emergence of online stores such as Taobao has reduced the cost and made people feel that books are very cheap.

The influence of science and technology on learning style-renewing teaching concept, giving full play to the role of modern information technology in classroom teaching, changing the traditional teaching mode and learning mode, realizing the change of teaching content presentation mode, teaching mode and teacher-student interaction mode, optimizing classroom teaching and promoting students' all-round development is another important work we have done.