单项选择题

All the students of this university have free ______ to the Internet via a broadband connection.

A．access
B．entrance
C．permission
D．passageway
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单项选择题
His ______ behavior made everyone nervous. He was always rushing to open doors and perform other small tasks, apologizing unnecessarily for any inconvenience that he might have caused.
A．oblivious
B．observant
C．obsequious
D．obsolescent
单项选择题
A computer usually has all the data it needs（）in its memory chips.

A、store
B、stores
C、stored
D、storing
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