啊！请教一道狒狒逻辑题……

kudoucliff

45. Commissioner: Budget forecasters project a revenue shortfall of a billion dollars in the coming fiscal year. Since there is no feasible way to increase the available funds, our only choice is to decrease expenditures. The plan before you outlines feasible cuts that would yield savings of a billion dollars over the coming fiscal year. We will be able to solve the problem we face, therefore, only if we adopt this plan.
This reasoning in the commissioner’s argument is flawed because this argument
A.    relies on information that is far from certain
B.    confuses being an adequate solution with being a required solution
C.    inappropriately relies on the opinions of experts
D.    inappropriately employs language that is vague
E.    takes for granted that there is no way to increase available funds

kudoucliff

这个选B，求高手解答，adequate solution和required solution有什么不一样吗？

猫仔涮涮

顶 我也没看明白 不是正统套路噻……

cxlpb1314

参考答案：B
思路：年度财务预算下一财年收入不足量one billion dollars，由于没有feasible way增加可得资金，只有削减开支。因而只是做了一个如何之间节省10亿美金的计划，it is just a required solution but not adequate maybe.

A：信息不准，错误。
B：正确，见思路分析。
C：不正确的依赖专家观点，无法得出。
D：思路模糊，文章思路是比较的清晰的。
E：前提已经指出没有feasible way，所以E错误

猫仔涮涮

为什么是一个required solution 呢？求教……

无忧子

adequate solution: 充分条件
required solution：必要条件
充分条件的定义是，如果有 A-B成立  那么A就是B的充分条件
必要条件的定义是，如果有A-B成立，那么B就是A的必要条件

无忧子

decrease expenditures能使收入减少这个problem得到缓解 A-B 充分
但是反之，减少这个problem就一定要decrease expenditures吗？也就是说B-A，也许还有其他方法能够解决这个problem，所以decrease expenditures只能是充分条件不能作为必要条件。
个人理解，不一定正确啊