狒狒逻辑45

幸运E枪兵 · 发表于 2012-5-1 17:38:03

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

答案选b，我是用排除法做的。谁能解释下b中的adequate solution和required solution是什么意思？

上邪 · 发表于 2012-5-1 19:30:56

adequate solution means a feasible way, one of all feasible ways...
required solution means the only way ...
充分必要的问题

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.
our only feasible way is to

this promise told us to decrease expenditures is the only feasible way we have to do...but it is not the required way
there can be other choices ...

however
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.
the key word is only if...
only if means there is no way other than decease expenditure, an assumption not mentioned in the previous promise
so B is correct

grasszhang2008 · 发表于 2012-5-1 23:17:07

“降低花费”是迫不得已的选择，而不是最优选择。

Bear

zhongshanlh · 发表于 2012-5-25 14:30:04

only if意思——只有XX才XX，意思就成了必要条件，只有采取了这个plan，才能增加收入。
但实际上，还有可能有其他的选择，因此用这个plan不是唯一的选择，所以说采用这个plan是个充分条件——即，只要采用这个plan，就可以增加收入。但采用这个plan不是必要条件——即，即使我们不采用这个plan，还有其他办法。

狒狒逻辑45

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