[求助]关于GWD-31-16的困惑。究竟D还是E？

考试专业户

版主大人不要骂我，虽然有以前的连接，但是跟在后面估计没有理我。

同时，我把以前的连接加后面了。

16: 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 father. 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.

最近几年，网络有用来传递电信信号的电子电缆被纤维光学电缆所取代。通过纤维光学电缆传送的信号会变弱，因此不得不加装一个称为再生器的设备以将信号送得更远。L公司是信号再生器的头号生产商。因此，L公司将成为改用缆线最受益的公司之一。

Which of the following, if true, casts the most doubt on the prediction about light-ling’s prospects? 找一个理由来说明L公司的前景并不是那么乐观。

A: Telecommunications signals sent along electrical wires can travel much farther than signals transmitted through fiber-optic before needing to be regenerated.要换缆是题干给出的事实之一，也是结论的前提。给出的事实之二是装纤维光学电缆就会装再生器。所以装再生器前的两种电缆比较是无意义的。

B: Expanding its production of regenerators will require Light-line to spend proportionately more on labor and materials. 成本的增加会影响利润，但是我们不知道利润的增加和成本增加的比例，所以存在两种可能，那么就是错误答案标志。

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.和前提及结论都无关。

D: There are technologies that enable telecommunications signals to be transmitted without either wire or fiber-optic cable. 也就是说有可能不需要使用再生器。结论是如果纤维光纤线开始铺设的话，那么L公司就成为最获得的公司之一。这个选项的含义在于让if后面的话有可能不会发生，如果纤维光纤维网络不铺设，L公司当然就不会因为生产再生器而获利。正确。

E: Several manufacturers are developing regenerator technologies that will allow signals to be transmitted many times farther than at present before requiring regeneration.这些公司是否包括L公司不得而知。而且再生器的品质好坏和结论没有直接联系。

但是E选项有一种解释好象又可以成为正确答案：那就是再生器的安装是为了让信号送达到更远的地方。比如以前要1公里安装1个，但是技术改进后，10公里才需要安一个。也就是说再生器的需求量会下降。那么无论L公司是不是在属于这个选项中提及的“几个公司”之一，其销售量都会受到影响。

这是以前的连接。http://forum.chasedream.com/dispbbs.asp?BoardID=24&ID=135537&replyID=&skin=1

tanwt

I choice D,but someone prefer E????

jinni

这道题目还是E

楼主选D犯了一个错误，注意题目的背景信息，是说In recent years, networks of fiber-optic cable have been replacing electrical wire for transmitting telecommunications signals，用的是现在完成时态，说明fiber-optic已经铺设了。这是本题的大前提。

这道题目还有人选B，文章的结论是在说获益，但是如果从B选项的角度出发的话，必须还要知道这个东东卖多少钱，虽然我投入很大，但是我如果卖得也贵，当然也能获益。

E选项是个weaken,因为fiber-optic本身改进了，那么对于中继器的需求会大大降低，甚至不需要。

rosmarine

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

i have no problem with the correctness of E, but anybody can tell me what the phrase "before requiring regeneration" modifies? i don't quite understand what role this phrase plays.

dogmousepwc

B proportionately more(请注意用词） on labor and materials  还不能说明比例呢？？？

 

E, 我就问一句：要是那个东西的确可以传输10公里远（原来的老产品只能传输1公里），但是价格是老产品的1000倍，你会用那种产品呢？？？E又排除这种可能么？

 

 

 

babypigsxm

我觉得E是不对的，它强调的是before requiring regeneration，而且说是让信号传得更快而已，不管传得多快，最终还是要经过regenerator，这样E选项对于那家公司以后的前景没有起到削弱的作用，但是B选项说要生产regenerator要花很多其他的成本，因为就算所有的regenerator都是Light-line生产的，但是它的成本也很高，因此对这间公司来说，并不是非常有利的，这样就对它的prospects有削弱作用。

miaomiaomiao

我选d，答案是e，但是看了以前的讨论贴，觉得b更有道理。

有个朋友解释的 b是 就是说成本随着产品扩大，成比例提升，说明不一定benefit

用了一个proportionally，要扩大生产需要按比例的提高更多的成本，所以就不收益了。

waiting for more discussion

gonghao

vote for E

in choice B：Expending investment on the material and labor is such a defence that is not sufficient.Beside what you expend on each product,there is always a corresponding incomes from each products in terms of its cost ,including cost from material , cost from labor and cost from machine as well.You will get the profit from each of your product when you minize your cost on matrial and labor.

in choice D: it says that there is an alternative way by which signals could pass it through.But we don't what it is .whether it could make the transmittion much faster or further.If the answer is "not",then the it will not be a problem .Let it be there ,and it won't get along with the profit-making by LL,a leading manufactuer

in choice E:it is said that there will be some companies focus on develop some new technoloy that will make the signal transmit much further than that present.If the it is true the totally requirments for the product,regenators ,will break down.And then the benifit will be undermined.

叮叮当当

B

感觉上B好像长得更像是出题思路，文章结论说的是benefit,B说中说的材料和人力等于加大了成本~~~

E说的，我怎么觉得像是加强~~~因为如果regenerator要是比以前发送信号更远了，那不是就可以少用几个regenerator,这样就更节省成本了~~~~

我第一次发帖参与讨论，请牛牛指教