单项选择题

Which of the following can best sum up the passage

A．Media Selection in Managing Information Resources.
B．The Importance and Necessity of Media Conversion.
C．Three Categories of Information Media.
D．Various Means of Communicating Information.

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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 arid outside his organization
D．use one format in processing information

单项选择题

The main idea of the last paragraph is that ______.

A．paper record is the most convenient medium or 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