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标题: 求教gwd-3-Q30 [打印本页]

作者: linbingcheng    时间: 2011-8-25 06:48     标题: 求教gwd-3-Q30

The percentage of households with an annual income of more than $40,000 is higher in Merton county than in any other county.However, the percentage of households with an annual income of $60,000 or more is highest in Sommer county.


If the statements above are true, which of the following can properly be concluded on the basis of them?



A   No household in Merton county has an annual income of $60,000 or more.


B    Some households in Merton county have an annual income between $40,000 and $60,000.


C    The number of households with an annual income of more than $40,000 is greater in Merton than in Sommer county.


D     Average annual household income is higher in Sommer than in Merton county.


E     The percentage of households with an annual income of $80,000 is higher in Sommer than in Merton county.

这题答案是B,但是我觉得E也很合理,M城市收入40000以上的人占的百分比最多,而S城市收入60000以上的人占的百分比最多,那么收入80000以上的人的百分比S大于M,不是很合理吗?因为M城市的人大多集中在40000到60000之间。不选B是因为这个不需要推啊……它只是说some并没有涉及M和S的比较嘛……

作者: coffee0921    时间: 2011-8-25 20:58

题干一:Merton城中,>40K的最多。
题干二:Sommer城中,>=60K的最多。
B.Some households in Merton county have an annual income between $40,000 and $60,000.
取非,如果Merton城中没有40K到60K这个区间的,那么就是>60K这一档,即题干一=Merton城中,>60K的最多。与题干二相悖,顾B正确。
E.The percentage of households with an annual income of $80,000 is higher in Sommer than in Merton county.
最大的问题在于80K这个数字毫无根据,按照你的理解,换成70K,90K都可以~
个人意见,仅供参考
作者: tracy214wxy    时间: 2011-8-28 19:38

这道题C为什么不对呢?
题干的第一句话就说了Merton county里,收入在$40000以上的人是所有county里最多的;
C说Merton County里收入在$40000以上的人比Sommer County收入在$40000的人多,通过上述题干不正好可以推出C吗?
作者: ChinaHawk    时间: 2011-8-29 06:17

C选项说的是绝对值,题目中给的是比例(M县收入超过4万的人口)
作者: sayysong    时间: 2011-8-31 06:29

E因为可能两个county都没有人有8K,所以percentage可能相等都为0




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