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In recent years, networks of fiber-optic cable have been replacing electrical wire for transmitting telecommunications signals. Signals running through fiber-optic cables deteriorate, and so the signals must be run through a piece of equipment called a regenerator before being transmitted farther. Light-Line is the leading manufacturer of signal regenerators. Therefore, Light-Line is one of the companies that will most benefit if new long-distance fiber-optic telecommunications networks are constructed.
Which of the following, if true, casts the most doubt on the prediction about Light-Line's prospects?

正确答案: E

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GWD31-16答案绝对不是E!

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楼主
发表于 2010-10-6 11:11:53 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
GWD31-16  争议题


In recent years, networks of fiber-optic cable have been replacing electrical wire for transmitting telecommunications signals. Signals running through fiber-optic cables deteriorate, and so the signals must be run through a piece of equipment called a regenerator before being transmitted farther. Light-Line is the leading manufacturer of signal regenerators. Therefore, Light-line is one of the companies that will most benefit if new long-distance fiber-optic telecommunications networks are constructed.


Which of the following, if true, casts the most doubt on the prediction about light-line’s prospects?



A. Telecommunications signals sent along electrical wires can travel much farther than signals transmitted through fiber-optic before needing to be regenerated.

B. Expanding its production of regenerators will require Light-Line to spend proportionately more on labor and materials.

C. The volume of signals that a fiber-optic cable can carry is several thousand times greater than the volume that can be carried by an electrical wire of similar size.

D. There are technologies that enable telecommunications signals to be transmitted without either wire or fiber-optic cable.

E. Several manufacturers are developing regenerator technologies that will allow signals to be transmitted many times farther than at present before requiring regeneration.



大家看E说的是before requiring regeneration,但是依然要用regeneration。因此没有减弱
而B说 proportionately
。成本和销量成比例上升,则利润上升,这是肯定的,因此没有消弱,反而略微加强。
支持选D



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沙发
 楼主| 发表于 2010-10-6 11:12:51 | 只看该作者
错了,仔细想想D也不对~~
NN指证!
板凳
发表于 2010-10-6 11:56:25 | 只看该作者
首先,B不对,因为一般来讲,生产的越多,平均到每个产品上的cost越低,所以不是proportionately

至于E,原文说了两点
1。如果传的远,信号会变弱,所以需要regeneration
2。文章最后一句说,if new long-distance fiber-optic telecommunications networks are constructed,那么light-line will more benefit
既然说了if, 就表明long-distance fiber blah blah is still UNDER CONSTRUCTION

所以,相比较其他而言,选E

我是新手,个人意见,仅供参考
地板
发表于 2010-10-6 12:17:10 | 只看该作者
个人感觉也选E, D的话其实太多不确定因素,毕竟题目中考虑的是利润问题,还原到现实生活中的话。有存在不代表regeneration的技术不会有利润,比如说现在有3G技术,我们的GSM 2.5G网络照样疯狂赚钱中。相比较来说,E更严谨,毕竟是直接在影射行业内竞争了。而题目中是假定light-line会成为leading的
5#
 楼主| 发表于 2010-10-6 13:19:39 | 只看该作者
说实话 我觉得所有选项都不对~~
6#
发表于 2010-10-6 13:33:44 | 只看该作者
说实话 我觉得所有选项都不对~~
-- by 会员 精灵宝宝 (2010/10/6 13:19:39)



你要去揣摩出题者的心理,而不是一味坚持自己的意见。。。。
7#
发表于 2012-9-13 14:36:01 | 只看该作者
确实全不对,按照GMAC思路,确实。。我同意全错
8#
发表于 2013-7-9 20:10:52 | 只看该作者
谈谈我的想法哈~
B---labor与material为无关选项,并没有削弱到stimulus(ST)的推理,因为ST中的逻辑是:regenerator需求的增长---->LL公司的巨大收入(一定要好好体会一下这种感觉,很多迷惑项都是看似削弱了结论,但其实并非是和ST中逻辑链相关的,这种感觉越好,那么在做题的时候不用怎么分析就可以直接判断是错误选项了~)
D---也是一个迷惑项,看似削弱了结论,但其实也是无关。结论中有一个if从句对于理解这个选项比较关键,if new long-distance fiber-optic telecommunications networks are constructed,即结论成立的条件是在这种长距离 FO通讯网络建立的基础上,因此D提到了新技术,那么离开了这个条件,就是错的...
E----我认为是是正确选项,这种新的regeneration技术(首先,明确是和结论成立的条件相关的)可以很多倍的增加regenerator前的传输距离,注意many times!!!可以这样理解,这种新技术增加的倍数如果越大,那么所需要的LL公司的regenerator的订单就越少,并且是many times,所以也就是great decrease of the LL's order,因此,削弱结论~
9#
发表于 2013-10-4 19:16:41 | 只看该作者
jay871750293 发表于 2013-7-9 20:10
谈谈我的想法哈~
B---labor与material为无关选项,并没有削弱到stimulus(ST)的推理,因为ST中的逻辑是:r ...

赞一个!!~~~~
10#
发表于 2014-3-10 19:07:45 | 只看该作者
jay871750293 发表于 2013-7-9 20:10
谈谈我的想法哈~
B---labor与material为无关选项,并没有削弱到stimulus(ST)的推理,因为ST中的逻辑是:r ...

说的顿时柳暗花明了!
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