GMAT申友逻辑CR题库-In the past year Harborville has had an unusually high rate of new cases of a certain disease. An investigation-精选题库-真题答案解析

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In the past year Harborville has had an unusually high

rate of new cases of a certain disease. An investigation revealed that over the past five years Harborville's public water supply has had a high level of pollutants. Medical researchers have hypothesized that Harborville's water is responsible for the high rate of new cases of the disease.

Each of the following, if true, provides additional support for the researchers' hypothesis EXCEPT:

(A) Most of the people afflicted with new cases of the disease had regularly drunk larger quantities of Harborville's water than had other Harborville residents.

(B) The same type of pollutants that were found in Harborville's water have independently been linked to occurrences in other towns of high rates of the disease.

(C) Some of the people with newly diagnosed cases of the disease began to develop the disease before Harborville's water became polluted.

(D) The rate of new cases of the disease among residents of Harborville who get their water from private sources is not unusually high.

(E) Towns with geographic and demographic characteristics similar to those of Harborville but without polluted water do not have as high a rate of the disease as does Harborville.

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答案：

过去H地某�

�病发病率高。调查发现过去五年公用水中污染物含量高。研究者假设H地水导致这种病的高发病率 Except题排除增强选项 A得病的人都经常喝这儿的水；增强，排 B.在H地发现的这种污染物曾经导致其他地区该种疾病的高发病率。类比增强，排 C 有人在水污染前得病；削弱水导致病，正确 D. 从个人来源处取水的人发病率不高。增强公用水导致发病，排 E.没有污染水源的其他地区发病率不高。增强，排。