World e－Book Library电子图书库不但含有电子图书，同时还收录的大量的有声读物。（)

The book was so bored that I returned it to the library without finishing it.A．so boredB．r

电子图书“electronic book”这一术语最早出现于（)。A.20世纪40年代B.1960年代C.1970年代D.1980年

Woman: Did you find the book for your reading assignment in the library？ Man: It closed be

网络医学文献信息资源的类型中不包括（)A 电子图书B 电子期刊C 会议文献D 科技报告E 发言稿

Just as the tree is the unit of a forest and the book the unit of a library ______ the molecule is

Identify the errors in the following sentence:The book was so bored that I returned it to the library without finishing it. ( )