119. 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 fever C. An epidemic of typhoid D. An epidemic of paralytic polio among infants E. An epidemic of paralytic polio among adolescents and adults The answer is C.我选了D.看了后面的解释也还是不太明白，请高手指点。
文中对应部分的内容为 Poliomyelitis, for example, emerged as an epidemic in the United States in the twentieth century; by then, modern sanitation was able to delay exposure to polio until adolescece or adulthood, at which time polio infection produced paralysis. Previously, infection had occurred during infancy, when it typically provided lifelong immunity without paralysis. Thus, the hygiene that helped prevent typhoid epidemics indirectly foster a paralytic polio epidemic.
2.回文章中找寻和modern sanitation有关的句子,发现有二: a. modern sanitation was able to delay exposure to polio until adolescece or adulthood, b. Thus, the hygiene that helped prevent typhoid epidemics indirectly foster a paralytic polio epidemic.
3.抉择:选B句为考量的对象,Thus, the hygiene that helped prevent typhoid epidemics indirectly foster a paralytic polio epidemic.
hygiene helped prevent typhoid epidemics → a lack of sanitation → An epidemic of typhoid.
4. D不对，infants无论如何不会病发paralytic polio. (Previously, infection had occurred during infancy, when it typically provided lifelong immunity without paralysis.)
原文： Poliomyelitis, for example, emerged as an epidemic in the United States in the twentieth century; by then, modern sanitation was able to delay exposure to polio until adolescence or adulthood, at (10) which time polio infection produced paralysis. Previ- ously, infection had occurred during infancy, when it typically provided lifelong immunity without paralysis. Thus, the hygiene that helped prevent typhoid epidemics indirectly fostered a paralytic polio epidemic.
D选项中最大的问题是"paralytic"。如果没有这个词，而是"An epidemic of polio among infants"，那么这个选项是对的。因为Line12, "..., when it typically provided lifelong immunity without paralysis"。
实际上，OG中的解释是很精确的，"Choice D is incorrect because, according to lines 10-12, polio in infants does not typically cause paralysis." 只是太简单了一些，不多看几遍不容易搞明白。
感谢，顿时明白了。ETS太狡猾了，本来如果把Thus, the hygiene that helped prevent typhoid epidemics indirectly fostered a paralytic polio epidemic。这句话中的typhoid换成polio的话会和上文衔接的更紧密些，突然冒出这种新病而且这个词相信绝大多数人都不认识，脑子很容易会被搞昏掉的。
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号
发表于 2003-9-1 21:13:00
