题目内容
_______ are secondary storage devices that use laser technology.
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A(n) _______ file might contain audience handouts and speaker notes in addition to electronic slides.
Increased use of mobile or wireless communication devices and cloud computing has been termed “the _______ revolution.”
A(n) _______ is a communications system connecting two or more computers.
The _______ provides a multimedia interface to the numerous resources available on the Internet.
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