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标题: [讨论]FeiFei-20 [打印本页]

作者: juniya 时间: 2004-4-3 04:04
标题: [讨论]FeiFei-20

20. A rise in the percentage of all 18-year-olds who were recruited by the armed services of a small republic between 1980 and 1986 correlates with a rise in the percentage of young people who dropped out of high school in that republic. Since 18-year-olds in the republic are generally either high school graduates or high school dropouts, the correlation leads to the conclusion that the republic’s recruitment rates for 18-year-olds depend substantially on recruitment rates for high school dropouts.

Which one of the following statements, if true, most weakens the argument?

(A) A large number of 18-year-old high school graduates were recruited for the republic’s armed services in 1986 than in 1980.

(B) Many of the high-technology systems used by the republic’s armed services can be operated only by individuals who have completed a high school education.

(C) Between 1980 and 1986 the percentage of high school graduates among 18-year-olds recruited in the republic rose sharply.

(D) Personnel of the republic’s armed services are strongly encouraged to finish their high school education.

(E) The proportion of recruits who had completed at least two years of college education was greater in 1986 than in 1980.

Which one is better?
I think B is better, but is not right.

作者: weiyu 时间: 2004-4-3 14:32
I prefer C. 因为C说完成高中学业的比例被雇佣的比例迅速增加，说明主要靠吸纳辍学高中生的说法不对．

作者: weiyu 时间: 2004-4-3 14:35
B是无关选项．因为设备需要高中毕业生操作，和他们原意招高中毕业生的关系不必然

作者: juniya 时间: 2004-4-4 03:00

呵呵，我想部队很多系统需要至少是高中毕业的，所以如果没有高中毕业，就不应该被招生

我错了

Thanks!!

作者: 小女公子 时间: 2005-3-16 13:06

以下是引用weiyu在2004-4-3 14:32:00的发言：
I prefer C. 因为C说完成高中学业的比例被雇佣的比例迅速增加，说明主要靠吸纳辍学高中生的说法不对．

我觉得比例增加迅速，并不能削弱主要靠吸纳辍学生的结论啊，比如

以前毕业生比例是２％，现在是３０％，当然ｒｏｓｅ　ｓｈａｒｐｌｙ，可是不能削弱ｄｅｐｅｎｄｓ　ｏｎ　ｈｉｇｈｓｈｏｏｌ　ｏｕｔｄｒｏｐｓ。

请教。

作者: sensornet 时间: 2005-3-17 07:19
削弱并不是要全盘否定。我的理解是，削弱是增加否定的可能性。在这道题里，当比例增加了，有可能超过50%，也可能不过50%，但是这种可能性一直存在，这就可以算成一种削弱。

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