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   For sinus pain, three out of four hospitals give their 
   patients Novex. So when you want the most effective 
   painkiller for sinus pain, Novex is the one to choose. 
   
   Which of the following, if true, most seriously 
   undermines the advertisement’s argument? 
   (A) Some competing brands of painkillers are 
       intended to reduce other kinds of pain in 
       addition to sinus pain. 
   (B) Many hospitals that do not usually use Novex 
       will do so for those patients who cannot 
       tolerate the drug the hospitals usually use. 
   (C) Many drug manufacturers increase sales of their 
       products to hospitals by selling these products 
       to the hospitals at the lowest price the manu- 
       facturers can afford. 
   (D) Unlike some competing brands of painkillers,  
       Novex is available from pharmacies without a  
       doctor’s prescription. 
   (E) In clinical trials Novex has been found more 
       effective than competing brands of painkillers 
       that have been on the market longer than 
       Novex. 
   
 答案为d. 我说说我的想法. 题目说医院给病人的药怎样怎样,证据是医院开出的三分之四的药都是N .但是d ,病人自己可以和到药房买. 并不能削弱原来的结论, 我认为是 OUT OF SCOPE . 
 并且, 如果b ,给出另外一种解释说,不是N有效的原因,而是其它要有某些方面使得病人无法忍受, 医院才只能开N.  这里用一句话概括就是, 不是N有效,是N可以令人忍受. 注意这两者并不等同.  
 以上是我的想法,请大家指正.  
   
 . 病人如果不去医院开,和医院给出的三分之四的N的证据不是一条线上的   
 
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