feifei 23题跪求，以前的帖子没有解决我的问题

yangmars · 发表于 2011-4-18 17:55:41

23. On a certain day, nine scheduled flights on Swift Airlines were canceled. Ordinarily, a cancellation
is due to mechanical problems with the airplane scheduled for a certain flight. However,
since it is unlikely that Swift would have the mechanical problems with more than one or two
scheduled flights on a single day, some of the nine cancellations were probably due to
something else.

The argument depends on which one of the following assumptions?

答案是A：More than one or two airplanes were scheduled for the nine canceled flights.

since it is unlikely that Swift would have the mechanical problems with more than one or two scheduled flights on a single day
这句话里面的 more than one or two scheduled flights到底应该怎么理解？是一到两个航班还是一到两架飞机？
以前的很多人都直接就把这句话理解成一到两架飞机了，……
我怎么觉得应该说的是不可能有比一到两次还多的航班被取消是因为机械故障啊？？
如果说不可能有一到两次以上的航班被取消是因为机械故障，那么这九个航班中最多只有两架飞机出故障导致停飞了，因为如果这两架飞机飞了九个航班，那么一定是九个航班都是出了机械故障所以停飞，那么就违背了题目中不可能多于两个的要求了，所以A的假设已被包含在这句话中，如果是后者，不可能有一到两架以上的飞机出故障，而且又有两架以上的飞机在飞这九趟航班，那么肯定有别的原因了，那就是A了，但是如果是后者的话，为什么不用more than one or two airplane而是用flight？？难不成airplane=flight，那这样的话不是很混乱？或者说这道题还有别的什么说法？求解释

On a certain day, nine scheduled flights on Swift Airlines were canceled. Ordinarily, a cancellation
is due to mechanical problems with the airplane scheduled for a certain flight. However,
since it is unlikely that Swift would have the mechanical problems with more than one or two
scheduled flights on a single day, some of the nine cancellations were probably due to
something else.

The argument depends on which one of the following assumptions?

答案是A：More than one or two airplanes were scheduled for the nine canceled flights.

since it is unlikely that Swift would have the mechanical problems with more than one or two scheduled flights on a single day
这句话里面的 more than one or two scheduled flights到底应该怎么理解？是一到两个航班还是一到两架飞机？
以前的很多人都直接就把这句话理解成一到两架飞机了，……
我怎么觉得应该说的是不可能有比一到两次还多的航班被取消是因为机械故障啊？？
如果说不可能有一到两次以上的航班被取消是因为机械故障，那么这九个航班中最多只有两架飞机出故障导致停飞了，因为如果这两架飞机飞了九个航班，那么一定是九个航班都是出了机械故障所以停飞，那么就违背了题目中不可能多于两个的要求了，所以A的假设已被包含在这句话中，如果是后者，不可能有一到两架以上的飞机出故障，而且又有两架以上的飞机在飞这九趟航班，那么肯定有别的原因了，那就是A了，但是如果是后者的话，为什么不用more than one or two airplane而是用flight？？难不成airplane=flight，那这样的话不是很混乱？或者说这道题还有别的什么说法？求解释

yangmars · 发表于 2011-4-18 18:12:57

大家能解决得或者不能解决的都冒个泡啊，不要默默的走开啊，……

sdcar2010 · 发表于 2011-4-18 20:57:35

flight is 航班.

It is unlikely that Swift would have the mechanical problems with more than one or two scheduled flights on a single day. This simply means that "it is unlikely" not "it is impossible." This premise says that mechanical problems only is unlikely to cause delay of more one or two scheduled flights on a single day. But your deduction of "因为如果这两架飞机飞了九个航班，那么一定是九个航班都是出了机械故障所以停飞", is wrong. Remember "unlikely" is not "must not."

wynyy2000 · 发表于 2011-4-19 13:18:05

这几天我也在纠结这道题，但今天想明白了，最开始我想不明白，是因为对9 flights的理解有偏差，认为9flights就应该是九架飞机来执行，忽略了其实一到两架飞机也可以执行九次飞行。文中结论是：这九次的取消原因，除了技术故障，还有其他的。。对A取非：如果只有一两架飞机执行9次飞行，那么九次飞行都有可能是由于技术故障而取消的，所以否定了题中结论

yangmars · 发表于 2011-4-19 23:05:48

你没看到我的解释……，我的纠结不是这里，而是，flight 可以理解成飞机吗？？？你看下我一楼的文字，然后想想能不能解决，再讨论啊，如果明白了，还望赐教啊

红红的云 · 发表于 2011-4-24 01:22:59

文中作者把flight 和airplane 混淆了，其实是有gap的。
作者认为该航空公司一般一天只有一到两个航线会因为飞机机械故障而取消（及作者推论飞机一般就飞一两个航线）。现在有九个航线被取消了，因该不会是机械故障，而是别的原因。作者假设了，一个飞机都只飞一到二个航线，更多的飞机飞9个航线出，

但是实际情况是有可能这一两架飞机飞了9个航线。所以9个航线取消是机械故障，是一两架飞机的机械故障。

feifei 23题跪求，以前的帖子没有解决我的问题

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feifei 23题 跪求，以前的帖子没有解决我的问题

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feifei 23题跪求，以前的帖子没有解决我的问题