逻辑jj求解答

YulanJing

Q62. The traditional treatment of strepinfections has been a seven-day course of antibiotics, either penicillin orerythromycin. However, since many patients stop taking those drugs within threedays, re-infection is common in cases where these drugs are prescribed. A newantibiotic requires only a three-day course of treatment. Therefore, re-infectionwill probably be less common in cases where the new antibiotic is prescribedthan in cases where either penicillin or erythromycin is prescribed.
Which of the following, if true, most strengthens the argument?
A.    Some of people who are allergic to penicillin are likely to beallergic to the new antibiotic.
B.    A course of treatment with the new antibiotic costs about the sameas a course of treatment with either penicillin or erythromycin.
C.    The new antibiotic has been shown to be effective in eradicatingbacterial infections other than strep.
D.    Some physicians have already begun to prescribe the new antibioticinstead of penicillin or erythromycin for the treatment of some strepinfections
为什么选D? C不是更好吗？
E.    Regardless of whether they take a traditional antibiotic orthe new one, most patients feel fully recovered after taking the drug for threedays.