A Book is a tutorial book on situational education, and we may not know much about situational education. He is good at two things: the product is a collection of all subjects and all versions from the third grade of primary school to the third grade of high school; 20 13 Approved by the Ministry of Education and officially authorized by People's Education Publishing House, it became the only authorized unit in China. Especially the second one, although I don't know what's the use, but the only one in the country is still very dazzling. "A Book" is a counseling book published by regular institutions and sold by Xinhua Bookstore.