[单项选择]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 (62) mean that airlines ever abandoned their business travelers. (63) , companies like Lufthansa and Swissair would rightly argue that they have always (64) best for the executive-class passengers. (65) many lines could be accused of concentrating too heavily in the recent past (66) attracting passengers by volume, often at the (67) of regular travelers. Too often, they have seemed geared for quantity (68) than quality.
Operating a major airline in the 1980s is essentially a(n) (69) 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 (70) fare, without forgetting that the front end should be filled with people who pay (71) more for thei
A. deterioration
B. failure
C. frustration
D. collapse