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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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GWD-31-Q16 求大牛牛们解答,以前的帖子都没看见详细解答,谢谢啦!~

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楼主
发表于 2011-1-19 00:54:10 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
1.???GWD-31-Q16
In recent years, networks of fiber-optic cable have been replacing electrical wire for transmitting telecommunications signals. Signals running through fiber-optic cablesdeteriorate, 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.


Which of the following, if true, casts the most doubt on the prediction about light-ling’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.

答案是E 题干是看懂了,就是E选项中的regenerator 和 regerneration的关系,意思搞不明白。。。希望大家帮忙啦@~
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沙发
发表于 2011-1-19 01:05:00 | 只看该作者
Regenerator is the machine required for signal regeneration.

If other manufacturers can make a new machine which transmits the signals farther than the machine Light-line made, then the new machine would be in high demand rather than the one made by Light-line.
板凳
 楼主| 发表于 2011-1-19 12:24:50 | 只看该作者
可是题干只是说L-L是one of the most呢…还有什么叫before requiring regeneration还是不太理解呢-_-#
地板
发表于 2011-1-19 12:39:26 | 只看该作者
the signals MUST be run through a piece of equipment called a regenerator BEFORE being transmitted father
5#
 楼主| 发表于 2011-1-19 22:41:17 | 只看该作者
谢谢NN~以后有问题还请多多帮助~!
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