試題詳解

31. What can we know from the how-to list?
(A) People need to decide their book prices before they mail them.
(B) People can get their books back after three months if no one buys them.
(C) People should send an e-mail to 2ndHandBooks after they mail their books.
(D) 2ndHandBooks will decide what kinds of books are good for sale after people mail them.