单项选择题

______: A location where data can be temporarily stored.

A．Area
B．Disk
C．Buffer
D．File
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单项选择题
______ is permanently stored in the computer and provides a link between the hardware and other programs that run on the PC.
A．Interface
B．Operating system
C．Internet
D．Applicaion software
单项选择题
The standard(70)in C language contain many useful functions for input and output， string handling，mathematical computations，and system programming tasks．
A．database
B．files
C．libraries
D．subroutine
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