International airlines have rediscovered the business travelers, the man or woman who regularly jets from country to country as

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问题     International airlines have rediscovered the business travelers, the man or woman who regularly jets from country to country as part of the job. This does not【C1】______mean that airlines ever abandoned their business travelers.【C2】______. companies like Lufthansa and Swissair would rightly argue that they have always【C3】______best for the executive-class passengers.【C4】______many lines could be accused of concentrating too heavily in the recent past【C5】______attracting passengers by volume, often at the【C6】______of regular travelers. Too often, they have seemed geared for quantity【C7】______than quality.
    Operating a major airline in the 1980s is essentially a(n) 【C8】______of finding the right mix of passengers. The airlines need to fill up the back end of their wide-bodied jets with passengers paying a【C9】______fare, without forgetting that the front end should be filled with people who pay【C10】______more for their tickets.
    It is no【C11】______that the two major airline bankruptcies in 1982 were among the companies【C12】______in cheap flights. But low fares require consistently full aircraft to make flights economically viable(可行的), and in the recent recession the【C13】______of traffic has not grown. Equally the large number of airlines jostling(争夺)for the【C14】______passengers has created a huge excess of capacity. The net result of excess capacity and cutthroat【C15】______driving down fares has been to push some airlines into【C16】______and leave many others hovering on the【C17】______.
    Against this grim background,【C18】______is no surprise that airlines are【C19】______increasingly to the business travelers to improve their rates of return. They have【C20】______much time and effort to establish exactly what the executive demands for sitting apart from the tourists.
【C12】

选项 A、majoring
B、specifying
C、specializing
D、diversifying

答案C

解析 语义衔接题。结合语境,下面说到低票价要求飞机总是满载,以保证航线的经济可行性。low fares与cheap flights是一致的,由此可推断出前面说的公司应该是经营廉价航班的,故答案为[C]specializing“专攻,专门研究”,specialize in表示“专门从事,专攻”。[A]中的major作动词时为不及物动词,常和in搭配使用,表示“主修”,常用来指在大学主修某门课程;[B]specifying“明确说明,具体指定”为及物动词,后面直接接宾语:[D]diversifying意为“不同,使多样化”。
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