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这个题的参考答案是C, 可是我觉得是B,为什么?

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mk

发表于2019-02-22
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.

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爱学习的小可爱

2019-02-25

选C B具有迷惑性,B说大部分高科技只能由18岁高中学历的人操作,但我们要削弱的结论是整个argument,B只能解释结论,没有涵盖argument的也就是原文 在共和国招募18岁和高中辍学率上升,这两个方面,要削弱的是在共和国招募18岁军役的比例和高中生辍学率上升相关,要削弱就是反驳招募18岁军医的比例和高中生辍学率没关系, 而C选项说的是80-86年间,在整个共和国被招募的18岁毕业生的比例上升,他因削弱。