狒狒45题，望积极参与讨论！！！

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

这道题目答案我可以选出来。但是我对题干中的最后一句话有疑问。We will be able to solve the problem we face, therefore, only if we adopt this plan. 是指We will be able to solve the problem we face----> we adopt this plan啊。并不是我们应该理解的那样：只要我们这样做就可以解决问题。

大家觉得有问题吗？

但是A only if B不是应该：A-->B吗？这个就和ls的说法相反了啊。

另外，就算是按照ls的理解，题目中是说adopt this plan 就是solve the problem的必要条件吗？题目中哪一句话提到了？我没有找到啊……

Justinchen01：这道题目答案我可以选出来。但是我对题干中的最后一句话有疑问。We will be able to solve the problem we face, therefore, only if we adopt this plan. 是指We will be able to solve the problem we face----> we adopt this plan啊。并不是我们应该理解的那样：只要我们这样做就可以解决问题。

yes，your understanding is correct.

Ithe argument author wanted to express the converted meaning: if we adopt this plan we can solve the problems, however, he used wrong words" only if " rather than "if only" and "only if" converted the meaning upside down

（B）confuses being an adequate solution with being a required solution

这句话应该是说混淆了充分条件和必要条件。

我们要解决问题，需要一个充分条件，给出一个必要条件对解决问题来说是不够的。

We will be able to solve the problem we face, therefore, only if we adopt this plan。

明显这句话给出plan只是一个必要条件，所以推不出We will be able to solve