单项选择题

Certain keywords or phrases in a hypertext document are linked to other online documents through (75) .

A．hyperlinks
B．references
C．transports
D．containments
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单项选择题
The main feature of （） is that they follow a first-come first-served rule.

A．looplinks
B．queues
C．stacks
D．trees
单项选择题
Whenever new information is entered, it must be stored somewhere in the computer’s （）.

A．processor
B．keyboard
C．printer
D．memory
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