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?23. On a certain day, nine scheduledflights on Swift Airlines were canceled. Ordinarily, a cancellation is due tomechanical problems with the airplane scheduled for a certain flight. However,since it is unlikely that Swift would have the mechanical problems with morethan one or two scheduled flights on a single day, some of the ninecancellations were probably due to something else. The argument depends on which one of the following assumptions? A. More than one or two airplanes were scheduled for the nine canceledflights. B. Swift Airlines has fewer mechanical problems than do other airlines ofthe same size. C. Each of the canceled flights would have been longer than the averageflight on Swift Airlines. D. Swift Airlines had never before canceled more than one or two scheduledflights on a single day. E. All of the airplanes scheduled for the canceled flights are based atthe same airport. 参考答案:A 采用取非法。 |
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