GWD31-16 请大家讨论

虚无飘渺

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.

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.

这道题我选了E，但看到不少选B的答案，不知道哪个对请大家发表一下看法

monicars

说得好。 投入大不能否认利润可以更高。 否则，现在的500强企业不可能追加投资成为现在的样子了，说不定还是作坊呢。呵呵呵 e我也看了很长时间，因为用的是进行时态，正在发展，最大的问题是将来能发展出来吗 谁知道呢。说不定这技术还太不成熟，三年五年都没结果。

但是e也算最好的了 讨that continued production of the drug must inevitably lead to the ibora’s extinction中，continued production是前提，问题是：如果持续生产，将导致灭绝。weaken的方向应该是：即使持续生产，也不会导致灭绝。必须承认出题者的前提。E项反对的是前提，所以不对。that continued production of the drug must inevitably lead to the ibora’s extinction中，continued production是前提，问题是：如果持续生产，将导致灭绝。weaken的方向应该是：即使持续生产，也不会导致灭绝。必须承认出题者的前提。E项反对的是前提，所以不对。

xiaoyue

应该是E吧！B是不对的，LL公司本来就是做regeneration的，增加成本是为了获得更多的利润，难道LL没有利润会去增加投入吗？不可能的！D是无关选项，因为题中指出了In recent years, networks of fiber-optic cable have been replacing electrical wire for transmitting telecommunications signals.即使有了新技术，也不是现在马上就用的，目前都用fiber中的tele技术。所以只有E是对的，因为现在tele技术中的signals不需要regeneration了，那么否定了结论！！

renprince

我选B项！

我当初是看了一眼E中的Several manufacturers 就把他排了！嗬嗬！因为我已经觉得B对了，这样的排除不免草率！

回过来想想，其实还是这个问题啊！说若干个生产者正在发展新的regenerator technologies ，我觉得这several 不能就此排除LL，说不定LL也正研究呢！这是很有可能的，因为E旨在讲述其他，而未涉及LL！从本质上来讲，他是个无关项！

至于D项，文中很明白的说networks of fiber-optic cable have been replacing electrical wire for transmitting telecommunications signals. D的推理是对文中事实的讨论，是经典的无关选项！

B我也觉得不是很好！但它是的的确确的削弱了LL赚钱的可能！

最后我还想重申一下我对E的看法，主要是我觉得他并没有和LL建立起有效的关系！在对一种商业策略削弱的时候，用到competitor是很常见的，也是很正确的。但是此题中Several manufacturers并没有和LL构成明确的竞争关系，一切的关系都是大家猜得！所以我觉得E不对！

meimei5656

我认为选D,新的技术发展了，都不需要文中所提的技术了，当然企业不能因此盈利了.

huahua115

支持E.

其实，本题的B、D、E初看起来，似乎都有doubt on the prediction 的作用。

但是，仔细分析，结合Therefore, Light-line is one of the companies that will most benefit if new long-distance fiber-optic telecommunications networks are constructed. 应该E最好。

B: 即使仅从利润角度考虑， spend proportionately more on labor and materials仍然可能增加更多的纯利润，比如规模经济等等带来的（当然，其实没必要这样分析的）。

D.如果没有前面的许多论述和结论中的条件（如：networks of fiber-optic cable have been replacing electrical wire for transmitting telecommunications signals. 和 if new long-distance fiber-optic telecommunications networks are constructed.），则D应该能起到很好的削弱结论的作用。

alanguo

个人认为：题出得不好！明显属于ETS黔驴技穷，开始装神弄鬼。

试着理解：B和E都提出疑问，但哪一个疑问更多呢？E看起来更厉害，但several manufacturers 也许也包括Light-line。这样它也会受益。。。