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逻辑答案基本一样,除了16, 19
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.
我认为应该选E，结论强调-“Light-line is one of the companies that will most benefit”，B说Light成本会上升，但如果新产品价格足够高，可以消化成本，还会benefit
我选E，其他厂商开发的技术会使长距离传输不再需要regenerator ，那Light-Line就没生意做了
19: Sonya: The government of Copeland is raising the cigarette tax. Copeland’s cigarette prices will still be reasonably low, so cigarette consumption will probably not be affected much. Consequently, government revenue from the tax will increase.
Raoul: True, smoking is unlikely to decrease, because Copeland’s cigarette prices will still not be high. They will, however, no longer be the lowest in the region, so we might begin to see substantial illegal sales of smuggled cigarettes in Copeland.
Raoul responds to Sonya’s argument by doing which of the following?
A: Questioning the support for Sonya’s conclusion by distinguishing carefully between No change and no decrease
B: calling Sonya’s conclusion into question by pointing to a possible effect of a certain change.
C: Arguing that Sonya’s conclusion would be better supported if Sonya could cite a precedent for what she predicts will happen.
D: showing that a cause that Sonya claims will be producing a certain effect is not the only cause that could produce that effect
E: pointing out that a certain initiative is not bold enough to have the predicts it will have
这道题比较绕，我选A，因为我觉得R还是先肯定了no change （refer to cigarette prices），然后再指出，因为有走私出现，所以销量会减少。而B没有体现R先肯定再challenge的过程。还请NN讨论！ | 
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发表于 2005-8-24 23:54:00
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