GRE Reading Comprehension: JiJing 352-GRE阅读机经352篇 - 1OK47SZZBF1Y8FY5K

Columnist: Until very recently, Presorbin and Veltrex, two medications used to block excess stomach acid, were both available only with a prescription written by a doctor. In an advertisement for Presorbin, its makers argue that Presorbin is superior on the grounds that doctors have written 200 million prescriptions for Presorbin, as compared to 100 million for Veltrex. It can be argued that the number of prescriptions written is never a worthwhile criterion for comparing the merits of medicines, but that the advertisement's argument is absurd is quite adequately revealed by observing that Presorbin was available as a prescription medicine years before Veltrex was.