Distant Education College,Jilin University Multiple-choice Questions 4.The main purpose for marking textbooks is.D A)to leave some marks there to show you have read it B)to quicken your reading speed C)to help you remember some details D)to help you get the main points of the book More Multiple-choice Questions Distant Education College, Jilin University More 4. The main purpose for marking textbooks is ____. D A) to leave some marks there to show you have read it B) to quicken your reading speed C) to help you remember some details D) to help you get the main points of the book