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标题: OG-119 [打印本页]

作者: wretdgdh 时间: 2004-12-2 07:54 标题: OG-119

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.

作者: himba 时间: 2004-12-2 07:56

提供一点想法 1.由题目的写法可知,此题是在考"推论".推论题的特点是,标准答案=原文句子改写. 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.)

作者: wretdgdh 时间: 2004-12-2 14:22

以下是引用himba在2004-12-2 7:56:00的发言： 提供一点想法 1.由题目的写法可知,此题是在考"推论".推论题的特点是,标准答案=原文句子改写. 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.)谢谢，不过4。还是有点糊涂

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