42. Which of the following is the most appropriate topic sentence for the paragraph below?
(A) You shouldn’t mark a book which is not yours.
(B) It is a good habit to mark youx book during reading.
(C) Many of the world,s great books are available now.
(D) Books can be cheaply bought in reprinted editions.
_____ Librarians (or your friends) who lend you books expect you to keep them
clean, and you should. If you decide that I am right about the usefulness of marking books,you will have to buy them. Many of the world’s great books are available today,in reprint editions,at less than ten dollars.