单项选择题

The first paragraph aims to tell the reader ______.

A．the importance of information-resource management
B．the relationship between the medium and information
C．the great variety of media for holding information
D．the numerous resources of information
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单项选择题
The main idea of the last paragraph is that ______.
A．paper record is the most convenient medium for later reference
B．electronic mail costs less than postage to mail paper memos
C．different media for information may be selected for different purposes
D．by using different media, a firm can create various information for its objectives
单项选择题
For effective management of information resources, the manager should ______.
A．convert all paper documents to electronic media
B．make media conversion when necessary
C．control the media used to generate information both inside and out side his organization
D．use one format in processing information
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