OG11-10,即OG10-15

Advertisement: 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 manufacturers 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.

c选项是对的，但有个问题，怎么知道Many drug manufacturers就是Novex的制造商，以及these products 就是Novex？如果无法保证，则c就是错的？

还望指点，多谢！

这里给出的是一个可以导致与题目相同现象的他因，虽然是一个phenomenon,一个common practice,没有直接指明是novex的制造商，但是对于这种问weaken的题目，已经足够有力了。

大家都采用低价，那novex的低价也就没什么特别的啦？……

这里要削弱得是：开得多，是因为有效

C说是价格才导致得开得多

不理解这道题，大家都价低，why novex开得多？、

D novex 是 non-prescrpition drug, 病人更容易拿到。才说明用得多呀

题干是说医院用N用得多，没说普通药房用得多，与非处方无关。所以D错。楼上的第一个问题请借鉴下面链接。

http://forum.chasedream.com/dispbbs.asp?boardid=24&replyid=1471809&id=156783&page=1&skin=0&Star=2