The passage suggests that a lack of modern sanitation would make which of the following most likely to occur?
A an outbreak of lyme disease
B an outbreak of dengue hemorrhagic
C an epidemic of tyhoid
D an epidemic of paralytic polio among infants
E an epidemic of paralytic polio among adolescents and adults
答案是C,有点疑惑,为什么不是D呢?感觉D更合适阿???牛牛指点一下 吧?
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这个题目我一开始也是选的D
但是你仔细看一下原文(L14-16):Thus, the hygiene that helped prevent typhoid epidemics indirectly fostered a paralytic polio epidemic.这句话里的hygiene是对上文中的mordern sanitation的同意改写,也是就是说mordern sanitation prevent了typhoid epidemics的发生,但与此同时它也间接地导致了paralytic polio epidemic。
问题是问如果缺少了mordern sanitation,什么事情最有可能发生,那么当然要选 C an epidemic of tyhoid。
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