25. (30469-!-item-!-188;#058&005456)
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.
這題在 (B) (C) 中徘徊很久,最後答案是 (C)
我對(B)的理解是:同樣的汙染物,在別的城市被認為和高疾病發生率無關→ 所以研究者說的說法錯誤
希望可以跟大家討論一下 ^^