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LSAT-15-2-24,LSAT-15-2-25
[face=Georgia]24. Between 1951 and 1963, it was illegal in the country of Geronia to manufacture, sell, or transport any alcoholic beverages. Despite this prohibition, however, the death rate form diseases during the first five years of the period than it was during the five years prior to 1951. Therefore, the attempt to prevent alcohol use merely make people want and use alcohol more than they would have it had not been forbidden.
Each of the following, if true, weakens the argument EXCEPT:
(A) Death form an alcohol-related disease generally does not occur until five to ten years after the onset of excessive alcohol consumption.
(B) The diseases that can be caused by excessive alcohol consumption can also be caused by other kinds of behavior that increased between 1951 and 1963.
(C) The death rate resulting from alcohol-related diseases increase just as sharply during the ten years before and the ten years after the prohibition of alcohol as it did during the years of prohibition.
(D) Many who died of alcohol-related diseases between 1951 and 1963 consumed illegally imported alcoholic beverages produced by the same methods as those used within Geronia.
(E) Between 1951 and 1963, among the people with preexisting alcohol-related diseases, the percentage who obtained lifesaving medical attention declined because of a social stigma attached to excessive alcohol consumption.
答案是D,E是如何削弱的?
25. A letter submitted to the editor of a national newsmagazine was written and signed by a Dr. Shirley Martin who, in the text of the letter, mentions being a professor at a major North American medical school. Knowing that fewer than 5 percent of the professors at such schools are women, the editor reasons that the chances are better than 19 to 1 that the letter was written by a man.
Which one of the following involves flawed reasoning most like that used by the editor?
(A) Since 19 out of 20 home computers are purchased primarily for use with computer games, and the first computer sold today was purchased solely for word processing, the next 19 computers sold will almost certainly be used primarily for computer games.
(B) Fewer than 1 in 20 of the manuscripts submitted to Argon Publishing Vo. Are accepted for publication. Since only 15 manuscripts were submitted last week, there is almost no chance that any of them will be accepted for publication.
(C) Fewer that 5 percent of last year's graduating class took Latin in secondary school. Howard took Latin in secondary school, so if he had graduated last year, it is likely that one or the other Latin scholars would not have graduated.
(D) More that 95 percent of the planes built by UBC last year met government standards for large airliners. Since small planes account for just under 5 percent of UBC抯 output last year, it is almost certain that all their large planes met government standards.
(E) Since more than 19 out of every 20 animals in the wildlife preserve are mammals and fewer than 1 out of 20 are birds, there is a greater than 95 percent chance that the animal Emily saw flying between two trees in the wildlife refuge yesterday morning was a mammal.
这个题目的原文的黑体没有读懂?请问从原文提取了什么信息来分辨这些长相都差不多的选项?[/face]
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发表于 2003-5-16 19:11:00
