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题库 / GMATAdvanced-CR-5
Columnist: Metro City has a lower percentage of residents with humanities degrees than any other city of comparable size in our nation. Nationwide, university graduates generally earn more than people who are not university graduates, but those with humanities degrees typically earn less than do graduates with degrees in other disciplines. So the main reason Metro City has higher income per capita than any other city of comparable size in our nation must be its low percentage of residents with humanities degrees.
Which of the following, if true, would most strengthen the columnist's argument?
Metro City residents with humanities degrees have higher income per capita than do people with humanities degrees in any other city of comparable size in the nation.
The percentage of residents with university degrees is lower in Metro City than in any other city of comparable size in the nation.
Nationwide, university graduates without humanities degrees typically earn more than do individuals without university degrees.
Metro City residents with degrees outside the humanities have per capita income no higher than the per capita income of such residents of other cities of comparable size in the nation.
In Metro City, a lower proportion of university graduates have humanities degrees than in any other city of comparable size in the nation.
这个题目真的很有深度，首先D这个选项就不好理解，但却非常有深意。D取非=假如Metro City的humanities degree以外的其他学位拥有者的收入普遍地，极大地高出了全国其他地区的类似人群的收入，那么Metro Ctiy的平均高收入就很可能是因为非humanities degree人群的高收入导致的，而不是题目结论中humanities degree的比例低导致的。因此从这个角度思考D的这种取非，就削弱了问题，因此D是很好的一个答案，值得仔细思量
我从这道题目得出的思维经验就是，紧抱核心，当出现其他解释会削弱结论的时候，我们应该敏锐的去察觉。类似题目中的D选项，否定了一个H Degree比例低意外的解释，很有趣。
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