10.Cable-television spokesperson: Subscriptions tocable television are a bargain in comparison to "free"television. Remember that "free" television is not reallyfree. It is consumers, in the end, who pay for thecostly advertising that supports "free" television.
Which of the following, if true, is most damaging to theposition of the cable-television spokesperson?
（B）Subscriptions to cable television include access to some public-television channels, which do notaccept advertising.
（D）For locations with poor television reception,cable television provides picture quality superiorto that provided by free television.
（E）Cable-television subscribers can choose whichchannels they wish to receive.
这道题选D木有问题，小鹿又开始钻错误选项解释的牛角尖了，这次的疑问是在错误选项B和E的解释
B的OG解释：The fact that cable television subscriptions include access to advertising-free public-television channels does not weaken the argument that “free” television is not free.
首先小鹿对于B的理解是：极弱的strengthen。
分析题干，Cable电视的发言人的argument的point在于：“Subscriptions to cable television are a bargain in comparison to "free" television.”那么得到这个point的原因在于消费者需要支付free电视的广告费。而B选项，cable电视可以收到没有广告的频道，刚好对应了这个发言人得到结论的原因，但因为是“include”“some”，所以是极弱的加强。
可是OG的解释，不但没有说这个极弱的加强作用，最让我不理解的是，OG说这个事实并没有削弱“free television is not free”这个argument。我觉得point有些偏移，就算削弱也应该削弱“bargain”这个argument，为什么说没有削弱“free television is not free”这个argument呢？
综上，2个疑问点：B选项是否有微弱的加强作用；B中“cable电视能收到没有广告的频道”和“free television is not free”有什么联系？
E的OG解释：Television viewers who do not watch cable channels have a choice as to which channels and programs they view. For example, they could watch channels with no advertising. So this information does not differentiate cable-television viewers from “free”-television viewers. 作者: bodkicker 时间: 2012-6-25 20:31
先分析题目：
conclusion：Subscriptions to cable television are a bargain in comparison to "free"television.
Premise：consumers pay for the costly advertising that supports "free" television.
要weaken conclusion，像是这题的B、E选项。
（B）Subscriptions to cable television include access to some public-television channels, which do not accept advertising.
这里是个无关选项，因为argument中的draw the conclusion在于有advertising会导致消费，不bargain。而没有advertising是不能weaken advertising最终导致不bargain的结果的。
（E）Cable-television subscribers can choose which channels they wish to receive.
这里我认为这个还是一个无关选项。我暗自认为小鹿应该在做这个选项的时候给他加了一个assumption，就是有的channels没有advertising，而有的channels有。这个选项的错误点跟B其实是一模一样的。跟题目argument从premise到conclusion的这个flow没有影响。所以也没有weaken作用。
