Chinese e-books for senior high school: /gzyw/jszx/tbjxzy/kbjc/dzkb/
High school math e-book:/gzsx/jszx _1/czsxtbjxzy/xkbsyjc/dzkb/
English e-books for senior high school: /ge/jszx/jtj/dzkb/
Other subjects, find yourself in official website. Methods: Click on the subject occupied by "High School", click on "Electronic Textbook" and click on the number of photo albums needed.
Su jiao edition can't be downloaded.