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题库 / GMATLA-CR-34
The traditional treatment of strep infections has been a seven-day course of antibiotics, either penicillin or erythromycin. However, since many patients stop taking those drugs within three days, reinfection is common in cases where those drugs are prescribed. A new antibiotic requires only a three-day course of treatment. Therefore, reinfection will probably be less common in cases where the new antibiotic is prescribed than in cases where either penicillin or erythromycin is prescribed.
Which of the following, if true, most strengthens the argument?
Some of the people who are allergic to penicillin are likely to be allergic to the new antibiotic.
A course of treatment with the new antibiotic costs about the same as a course of treatment with either penicillin or erythromycin.
The new antibiotic has been shown to be effective in eradicating bacterial infections other than strep.
Some physicians have already begun to prescribe the new antibiotic instead of penicillin or erythromycin for the treatment of some strep infections.
Regardless of whether they take a traditional antibiotic or the new one, most patients feel fully recovered after taking the drug for three days.
注意这里的问法：用新药的人 和 用旧药的人 比较，用新药的人reinfection概率小了。这里小文章是方法推目的，方法是用新药，目的是要让用新药的reinfection比旧药概率小。题目要求加强这个目的。A削弱；B讲的是cost，无关，文章没有提到cost，所以看到cost这个答案就可以毙掉；C也是削弱；D无法推出概率更小这个结论，无法反映出两者比较，如果题目说用新药能够减少re，那这个选项正确。E正确，在大家吃的都一样的情况下，根据新药三天见效，比较就能反映出来
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