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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.
（D）讨论的是医生是否会开药，即是否会帮助方案可行性。不符合于得出这个结论的前提。
正是因为他们觉得好了，吃旧药的人才停用药，才导致有人reinfection，才有结论描述的情形：和吃旧药的人比，reinfection才less common in 吃新药的人，因为新药3天的疗程确实让他们好了。
E选项证实了吃新药和吃旧药，在reinfection上， 是有可比性的。
这个解释很清楚！登录 或 注册 后可以参加讨论
正确的是因果：
因：病人常常只吃3天药，而阿莫西林要7天发回作用，而新药3天就能发挥作用
果：新药refection比旧药少
很棒的解释！登录 或 注册 后可以参加讨论
E most patients feel fully recovered after taking the drug for three days.60个人吃了三天就好了。“肯定”是新药发挥了重大作用
好绕的逻辑！！！！！！
A.削弱（新病人对新抗体，用都不会用，更别提疗效）
B.与价格与结论(效果）无关
C.说其他病，无关，本题是关于strep病
D.无关，其他医生用这个要并不能证明药就是有效的（需要别的assumption）
E.参照楼下的解释，前面四个都排除，自然剩E，不过E也说得通，只是有点掩盖真正含义。
结论是： 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.
（B）（D）讨论的是措施是否可行，而原文的结论是：如措施实可施(in cases where new antibiotic is prescribed)，那么实施之后效果如何。
原来是这样。谢谢！
所以根据文中结论，已经都开出去了药。那就跟药价无关了，排除b吧
解释得很好！登录 或 注册 后可以参加讨论