我觉得这道题目有一点要引起注意： 可能有人会认为B-Between 1980 and 1986 the percentage of high school graduates among 18-year-olds recruited in the republic rose sharply. 反对了前提：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。因为文章中有这么一句Since 18-year-olds in the republic are generally either high school graduates or high school dropouts。既然a rise in the percentage of young people who dropped out of high school in that republic 那么 the percentage of young people who were recruited 就要drop. 其实不对。请注意这里的percentage都是和自身相比的，比如dropout可能增长了过往的4% 而recruit 可能增长了过往的40%。
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