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标题: 请帮忙看道逻辑题吧 [打印本页]

作者: 奔奔宝贝 时间: 2013-12-31 21:13
标题: 请帮忙看道逻辑题吧

Low-income families are often unable to afford as much child care as they need. One government program would award low-income families a refund on the income taxes they pay of as much as $1,000 for each child under age four. This program would make it possible for all low-income families with children under age four to obtain more child care than they otherwise would have been able to afford.

Which of the following, if true, most seriously calls into question the claim that the program would make it possible for all low-income families to obtain more child care?

(a) The average family with children under age four spends more than $1,000 a year on child care.

(b) Some low-income families in which one of the parents is usually available to care for children under age four may not want to spend their income tax refund on child care.

(c) The reduction in government revenues stemming from the income tax refund will necessitate cuts in other government programs, such as grants for higher education.

(d) Many low-income families with children under age four do not pay any income taxes because their total income is too low to be subject to such taxes. (B)

(e) Income taxes have increased substantially over the past 20 years, reducing the money that low-income families have available to spend on child care.

答案是B，我可以理解，可是D为什么不对呢？求分析，谢啦~

作者: 南蛮也爱球 时间: 2014-1-1 21:12
d是说low income families do not pay any income tax,那么低收入家庭如果没有缴税，根据program（从收缴的所得税中退税）,政府就不能给那些家庭refund（退税)，从而不能激励父母增加照顾孩子的投入，so the program fail to make it possible for all low-income families to obtain more child care.所以，d选项错误！

作者: fxj25860 时间: 2014-1-1 21:35
B 和 D 都削弱原文的结论，但注意原文结论是对 all 低收入家庭都提高，但对于选项而言，D优于B，B只提及SOME，程度上削弱性不如 MANY!! 而且SOME 模棱两可，到底有多少，但总体上两个选项都能削弱原文结论。

作者: 奔奔宝贝 时间: 2014-1-2 14:05

南蛮也爱球发表于 2014-1-1 21:12
d是说low income families do not pay any income tax,那么低收入家庭如果没有缴税，根据program（从收缴的 ...

我泽呢么觉得你的推理结果应该是：D选项是正确答案。。。

作者: 奔奔宝贝 时间: 2014-1-2 14:07

fxj25860 发表于 2014-1-1 21:35
B 和 D 都削弱原文的结论，但注意原文结论是对 all 低收入家庭都提高，但对于选项而言，D优于B，B只提及SO ...

谢谢~这个分析我满意

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