单项选择题

We can use the word processor to ______ your documents.

A．edit
B．compute
C．translate
D．unload
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单项选择题
A ______ is a functional unit that interprets and carries out instructions. )
A．memory
B．processor
C．storage
D．network
单项选择题
Insufficient ______ can cause a processor to work at 50% or even more below its performance potential.
A．mouse
B．I/O
C．document
D．memory
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