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[求助]有道逻辑题想不通,请教各位高手~

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楼主
发表于 2009-8-19 17:45:00 | 只看该作者

[求助]有道逻辑题想不通,请教各位高手~

    Most major retail electronic chains experienced a dramatic increase in the amount of merchandise lost to shoplifting during the early 1980s. By 1986,however,all large chains had installed new antitheft devices in their stores. Since this time,there has been a sharp decline in the number of shoplifting incidents taking place in those stores annually.

     Which one of the following,if true,would most strengthen the claim that the antitheft devices were responsible for the decrease in shoplifting?

      A:the average size of electronic merchandise is now small enough to fit into a person's pocket.

      B:the average cost of electronic merchandise decreased since 1986.

      C:each item in the store was clearly marked with an unremovable security number.

      D:shoplifting increased at single outlet retail electronics operations since 1986

      E:shoplifting increased in the retail industry overall since 1986.

       这是ARGUMENT复习资料里的一题,资料给的答案跟解释我完全摸不到头脑...请各位高手帮小弟参谋下,说个答案与解释,谢谢大家!!

沙发
发表于 2009-8-19 21:58:00 | 只看该作者

这个不是真题吧,搞不懂完全没有关系。 一定要选的话 选D

板凳
发表于 2009-8-20 06:06:00 | 只看该作者

Is the answer D?

I was thinking the question says the shoplifting rate has decreased because all the chain stores install that antitheft devices.. but that excludes single outlet, so D says shoplifting increases in those outlets who do not have the antitheft devices...

that's my thoughts. .

地板
发表于 2009-8-26 14:09:00 | 只看该作者
Seems to me the answer is A. If the items are small enough to fit into pockets, then it is easier to steal things. So the camera must have stopped them.
5#
发表于 2009-8-26 22:28:00 | 只看该作者
no
first it is not a camera
second it never said this device is good at detecting small stuff. the size may be totally irrelevant.
6#
发表于 2009-8-29 11:48:00 | 只看该作者

I think the answer is E.

If shoplifting in other store did not decrease, the antitheft devices may have made the difference in large chain stores.

7#
发表于 2009-8-30 00:06:00 | 只看该作者
it can not be E.
It is retail industry, by the meaning, it should also include the large chains.
1. it is in the reverse way, increased
2. it is scope shift to cover an expanded area.
8#
发表于 2009-8-31 13:18:00 | 只看该作者
这是条真题,答案是选D的,但这是什么年份的题,我忘记了。
9#
发表于 2009-9-4 05:04:00 | 只看该作者
以下是引用kbsred在2009/8/30 0:06:00的发言:
it can not be E.
It is retail industry, by the meaning, it should also include the large chains.
1. it is in the reverse way, increased
2. it is scope shift to cover an expanded area.

For E), the shoplifting rate in the retail industry as a whole has increased, meaning customers in general have not voluntarily restrained themselves from shoplifting. Yet, shops that have anti-theft devices installed saw less shoplifting than before. Therefore the devices made a difference. 

10#
发表于 2009-9-8 07:11:00 | 只看该作者

加强结论:由于anti-devise的安装造成shoplifting减少的。换句话说:anti-devise的安装是 shoplifting减少的原因。

加强这种因果类无非就是三种:1,因存在,果存在;2,因不存在,果不存在;3,排除他因!

我觉得E是正确的。 E指出是overall增加。而overall的增加就表明,不是由于小偷数量的减少。适用以上说的第三种:排除他因可能。

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