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  3. The most widely used therapy for a certain type of ulcer completely heals such u

The most widely used therapy for a certain type of ulcer completely heals such u

游客2024-01-13  70
问题 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 healed. 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. The answer to which of the following would be most useful in evaluating the argument given?
选项 A、What differences are there, if any, in the ways that the two therapies are administered?
B、Is there any significant difference between the costs associated with the two therapies?
C、What percentage of people with ulcers of this type who were treated with the most widely used therapy for six months experienced significant healing?
D、How quickly do ulcers of this type, if left untreated, become significantly worse?
E、What percentage of patients involved in the six-month trial of the new therapy were disappointed at the rate of healing that were experiencing?
答案 C
解析 本题为评价题型。(C)问及在6个月中以最常用疗法治疗的该种溃疡的患者中有多大比例获得了明显康复。若为100%，那么就高于新疗法的80％，新疗法疗效更显著受到质疑；若低于80％则新疗法疗效更显著成立.因此(C)为很好的评价。(A)、(B)离结论较远，许多人易犯递进推理；(D)、(E)均为无关选项。
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