单项选择题

In Paragraph 5, "in-flight service" means ______.

A．charge-free air service
B．a new safety device
C．service on the plane
D．flights within one country
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单项选择题
One criticism against many international airlines is that they have, in the recent past, ______.
A．catered for the more wealthy people
B．given preferential treatment to executive clients
C．only met the needs of the regular travelers
D．marketed their service with the masses in mind
单项选择题
The following arc all used to attract passengers EXCEPT ______.
A．punctuality
B．sound system
C．free drinks
D．charge-free food
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