几道费费逻辑宝典135里的题！大家来看看！

jessicalxx

23. On acertain day, nine scheduled flights on Swift Airlines were canceled.Ordinarily, a cancellation is due to mechanical problems with the airplanescheduled for a certain flight. However, since it is unlikely that Swift wouldhave the mechanical problems with more than one or two scheduled flights on asingle day, some of the nine cancellations 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 thenine canceled flights.

B.       Swift Airlines has fewermechanical problems than do other airlines of the same size.
C.       Each of the canceled flightswould have been longer than the average flight on Swift Airlines.
D.      Swift Airlines had never beforecanceled more than one or two scheduled flights on a single day.
E.       All of the airplanes scheduledfor the canceled flights are based at the same airport.

参考答案：A 采用取非法。（这道题看了答案我还是没怎么懂它的意思。其实选D时就觉得不怎么对，但确实也选不出其它答案——因为没懂题！）


38. Amphibianpopulations are declining in numbers worldwide. Not coincidentally, the earth’sozone layer has been continuously depleted throughout the last 50 years.Atmospheric ozone blocks UV-B, a type of ultraviolet radiation that iscontinuously produced by the sun, and which can damage genes. Becauseamphibians lack hair, hide, or feathers to shield them, they are particularlyvulnerable to UV-B radiation. In addition, their gelatinous eggs lack theprotection of leathery or hard shells. Thus, the primary cause of the decliningamphibian population is the depletion of the ozone layer.
Each of thefollowing, if true, would strengthen the argument EXCEPT:

A.      Of the various types of radiationblocked by atmospheric ozone, UV-B is the only type that can damage genes.
B.       Amphibian populations aredeclining far more rapidly than are the populations of non-amphibian specieswhose tissues and eggs have more natural protection from UV-B.
C.       Atmospheric ozone has beensignificantly depleted above all the areas of the world in which amphibianpopulations are declining.
D.      The natural habitat of amphibians has not become smallerover the past century.
E.       Amphibian populations havedeclined continuously for the last 50 years.

答案：D
思路：原文论述臭氧层的破坏造成UV-B辐射过量是导致两栖动物数量减少的主要原因。
A：支持说明为什么是UV-B而不是其他原因。
B：支持说明为什么UV-B会降低两栖动物的数量。
C：提供空间论据说明臭氧层受损和两栖动物数量减少的相关性。
D：中性评价。不Weaken也不Strengthen.（我是觉得这排除了一个他因嘛——如果是habitat减少的话，那population的下降就又可能是这个因素造成的啊；所以排除了就有strengthen的作用嘛）？？？？

jessicalxx

大家看了有什么想法就跟上嘛~谢啦~我正在tackle费费逻辑！拉黑的选项是我的initial choice,拉黄的是正确选项——就是没怎么想通的——还请各位牛牛帮忙解答咯~~！

scarlett006

我也觉得D是排除他因加强。。。。