填空题∧=less

填空题irrelevant

单项选择题A．Current issues are kept on the shelves.B．Back issues are bound together in volumes.C．The procedure of borrowing a back issue is slightly different from that of a book.D．Current issues of periodicals are put on microfilm.

填空题∧=A

单项选择题A．twoB．threeC．fourD．five