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 wo the signals must be run through a piece of e3quiplent 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?
1)
Telecommunications signals sent along electrical wires can travel much Farther
than signals transmitted through
fiber-optic before needing to be
Regenerated.
2)
Expanding its production of regenerators will require Light-line to spend
Proportionately more on labor and
materials.
3) 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.
4) There are technologies that
enable telecommunications signals to be transmil
Without either wire or fiber-optic cable
5)
Several manufacturers are developing regenerator technologies that will allow
To be transmitted many times
farther than at present before requiring regeneration
我知道D 是混淆选项，但是又说不出来个所以然
希望大家帮忙！！！
前提应该是“假如光纤网络建设起来了，然后 Light-line 得益” D的意思是“ 有无线技术”，但是有否无线技术与Light-line在光纤网络赚钱应该无关吧
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. 建好fiber→为了要更快→regenerator→L公司利益↑
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. 否定的位置不对，原文前提已经说fiber-optic比wires快
B. Expanding its production of regenerators will require Light-Line to spend proportionately more on labor and materials.
重点不是在L公司的其它花费上面，也有可能利益和花费同等增加
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. 没否定反而小小支持
D. There are technologies that enable telecommunications signals to be transmitted without either wire or fiber-optic cable. 否定的位置不对
完全否定了前提的必需条件
是偏掉了的否定
不对
E. Several manufacturers are developing regenerator technologies that will allow signals to be transmitted many times farther than at present before requiring regeneration. 直接站在regeneration的点上，把利益在使用regeneration前就被打断，使得L公司的利益不可能↑
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