单项选择题

From the passage we can infer that ______.

A．a successful airline in the 1980s meets the needs not only of the masses but also of the wealthy passengers
B．it is more comfortable to sit in the back of jet planes
C．business travelers dislike tourists
D．only by specializing in cheap flights can airlines avoid bankruptcy

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单项选择题

With the intention of attracting a somewhat different type of passengers, the airlines have now begun to concentrate on ______.

A．providing facilities enabling business travelers to work on board
B．ensuring that the facilities offered to the executive are indeed superior
C．organizing activities in which first-class passengers can participate
D．installing sleeping compartments where more privacy is ensured

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