单项选择题

The purpose of the (73) is to provide fully integrated analog services to users.

A．ISDN
B．WWW
C．FTP
D．HTTP
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单项选择题
The （） of the window indicates which program you are currently working in arid its color will become blue if a window is active.

A．control menu
B．control bar
C．title menu
D．status bar
单项选择题
As computers evolve, they have become Smaller and smaller, while speed and (66) have increased tremendously.
A．quantity
B．capacity
C．available
D．quality
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