GRE Logical Reading: ETS-GRE逻辑单题ETS - 64804Y4IB3X0_UXPK$

The most widely used therapy for a certain type of ulcer completely heals such ulcers in 44 percent of patients within six months. In a six-month trial of a new therapy for this type of ulcer. 80 percent of ulcers treated achieved significant healing and 61 percent were completely heated. Since the trial treated only ulcers of this type that were worse than average, the new therapy clearly promotes healing more effectively than the most widely used therapy.