单项选择题

Most trains______ long distances have a dining car and a club car where refreshments are served.

A．to go
B．to be going
C．that goes
D．going
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单项选择题
The ability to store knowledge makes computers different from every other machine______ invented.
A．ever
B．thus
C．yet
D．as
单项选择题
An increasing proportion of our population, unable to live without advanced medical______, will become progressively more reliant on expensive technology.
A．interference
B．interruption
C．intervention
D．interaction
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