In Kravonia, the average salary for jobs requiring a college degree has always been higher than the average salary for jobs that do not require a degree. Current enrollments in Kravonia’s colleges indicate that over the next four years the percentage of the Kravonian workforce with college degree will increase dramatically. Therefore, the average salary for all workers in Kravonia is likely to increase over the next four years.
Which of the following is an assumption on which the argument depends?
A. Kravonians with more than one college degree earn more, on average, than do Kravonians with only one college degree.
B. The percentage of Kravonians who attend college in order to earn higher salaries is higher now than it was several years ago.
C. The higher average salary for jobs requiring a college degree is not due largely to a scarcity among the Kravonian workforce of people with a college degree.
D. The average salary in Kravonia for jobs that do not require a college degree will not increase over the next four years.
E. Few members of the Kravonian workforce earned their degrees in other countries.
答案是选C？？？？？
这样不是削弱了么?
文中说将来会有更多有degree的人才，未来平均工资会上涨．
答案Ｃ中说工资和有degree的人才没有很大的因果联系．
C 翻译过来大概大家就容易理解一点了：
目前有Degree的人工资更高些，不是因为缺少有degree的K学校的学生。
Scarcity 是稀缺性的意思。
言外之意，缺少了C的assumption,很可能四年之后有D的人太多了，有D的人的工资就不见得很高了，平均工资可能下降了，therefore C is the most important assumption.
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