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 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.
答案居然是D，郁闷呀。。。 | 
