单项选择题

Satellite communications are so up-to-date that even when______in the middle of the Pacific, businessmen can contact their offices as if they were next door.(2011年四川大学考博试题)

A．gliding
B．cruising
C．piloting
D．patrolling
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单项选择题
The liner is making a round-the-world ______ this year. All the passengers are making the voyage for pleasure.
A．voyage
B．cruise
C．journey
D．excursion
单项选择题
Gasoline is processed from ______ oil.
A．crude
B．raw
C．rough
D．tough
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