单项选择题

Basically a robot is a machine which moves, manipulates, joins or processes ______ in the same way as human hand or arm.

A．characters
B．components
C．catalogues
D．collections
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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
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
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