In a narrow sense, an electronic library refers to a library that uses electronic media (CDs, diskettes, etc.). ) to store, retrieve and transmit information. Digital library does not have traditional printed books, but uses pure digital information to provide online services for readers; Virtual library is not an independent entity, but an environment that provides users with various entrances to obtain the information they need. It has two-dimensional and three-dimensional computer interfaces, enabling users to browse and access information at will.
In fact, these three types of libraries are essentially the same, and libraries are collectively called electronic libraries. The American Electronic Library Act defines the characteristics that an electronic library system should have, that is, it can use a series of technologies to send a large amount of information, including education and research, to families, schools and communities, and provide retrieval; Interactive multimedia programs contribute to formal and informal education and learning; These information and services can improve productivity, provide new choices for everyone's life and improve their living standards; These information and services must be accessible to everyone.
Electronic library is an information processing and transmission system operated by electronic means and methods, supported by computer technology, and occupies a rich database. Users can browse, retrieve and register the remote database online by using high-speed broadband LAN and World Wide Web through the terminal.
17. The most accurate explanation for the concept of "electronic library" is ().
A electronic library is supported by computer technology and provides users with rich databases.
B. the electronic library is operated by electronic means and methods. Information processing and transmission system.
C. Electronic libraries no longer regard traditional printed books as the only information resources.
D. Electronic libraries can handle book information with the help of network technologies including electronic media.
18, for the first paragraph with a horizontal line, the most accurate explanation is ()
A. Background of the emergence of electronic libraries
B. Development and application of electronic science and technology
C. New achievements in electronic science and technology
D. scientific and technological factors in electronic libraries
19. Summarize the basic features of "electronic library".
A: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.
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20. Please guess the influence of "electronic library" on people's work (study and life) in the future?
A: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.
17.b (this method conforms to the following definition and reveals the essential characteristics of things).
18.d (the subject of the underlined sentence is "electronic library", so the object of the statement should be "electronic library", but item b is not suitable because the content as the background of the times is much more extensive and complicated)
19.( 1) it can send a lot of information to people and provide retrieval (2) interactive programs serve learning and research (3) it can improve productivity and people's lives (4) it can serve everyone.
20.