求助一道GWD的逻辑。。~~~~谢谢大家~

livdl

16. GWD31-16
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 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.

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答案是E 但是我选的是B
关键E说的是速度比安装那个东西之前快很多倍而不是比这个公司生产的这个东西快很多倍啊。。。。。
郁闷。。。

Quintus

我觉得B不能削弱，成本高了，万一转的更多，一样会赚钱啊。

但是E说若果其他公司生产的快了，可能就木有必要new long-distance fiber-optic telecommunications networks are constructed.，直接把前提否了。我个人认为。。。。

maylovemay

B 说要投入更多的劳动力，因为工程浩大， 但是这不能表示会有损失，如果做的多， 只要有利润空间， 还是会有钱赚
但是E 是说， 其他公司会有更好的技术， 那么就直接没的做了，

livdl

谢谢楼上各位~

99qiuqiu

E，是farther不是faster，这是关键。