单项选择题

One day we all may find it useful to have a(n) ______ for sending documents, writing any pictures across the telephone lines.

A．receiver
B．echo
C．extension
D．facility
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单项选择题
An institution that properly carries the name university is a more comprehensive and complex institution than any other kind of higher education ______.
A．settlement
B．establishment
C．construction
D．structure
单项选择题
When Ann broke the dish she tried to put the ______ back together.
A．fragments
B．pieces
C．bits
D．slices
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