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OG12-71请NN们解答.谢谢!
71.Roland:The alarming fact is that 90 percent of the people in this country now report that they know someone who is employed.
Shraon:But a normal,moderate level of unemployment is 5 percent,with one out of 20 workers unemployed.So at any given time if a person knows approximately 50 workers, one or more will very likely be unemployed.
Sharon's argument relies on the assumption that
A, normal levels of unemployment are rarely exceeded.
B,unemployment is not normally concentrated in geographically isolated segments of the population
其他选项我都已经排除了,正确答案是B,可是我不懂为什么跟geographically扯上关系,希望大牛们解释下A,B...感激万分!! |
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