求教 GWD-9-Q30 一道BF题目的claim以及main conclusion的区分

teddybearj4

Criminologist: Some legislators advocate mandating a sentence of life in prison for anyone who, having twice served sentences for serious crimes, is subsequently convicted of a third serious crime. These legislators argue that such a policy would reduce crime dramatically, since it would take people with a proven tendency to commit crimes off the streets permanently. What this reasoning overlooks, however, is that people old enough to have served two prison sentences for serious crimes rarely commit more than one subsequent crime. Filling our prisons with such individuals would have exactly the opposite of the desired effect, since it would limit our ability to incarcerate younger criminals, who commit a far greater proportion of serious crimes.

In the argument as a whole, the two boldfaced portions play which of the following roles?

A.The first is a conclusion that the argument as a whole seeks to refute; the second is a claim that has been advanced in support of that conclusion.

B.The first is a conclusion that the argument as a whole seeks to refute; the second is the main conclusion of the argument.

C.The first is the main conclusion of the argument; the second is an objection that has been raised against that conclusion.

D.The first is the main conclusion of the argument; the second is a prediction made on the basis of that conclusion.

E.The first is a generalization about the likely effect of a policy under consideration in the argument; the second  points out a group of exceptional cases to which that generalization does not apply.

OA: B

做的时候在A、B之间徘徊了很久~主要就是BF2.我认为这道题的main conclusion是：the plan has the oppsite of the desired effect.但是如果是连着BF2的前半句：Filling our prison with such individuals，我觉得BF2整个就是一个支持main conclusion的claim了。因为这个policy本来并没有要多关这些青年犯罪，Filling our prison with such individuals只是policy实施的一个结果而已。这个导致的结果（多关了青少年）只能成为support这个policy没效的claim呀~

请NN们拍砖~谢谢啦~~~~~

双色鹿

首先teddy哇，这道题小鹿觉得没有必要在A徘徊：the second is a claim that has been advanced in support of that conclusion. “that conclusion”，which one？ “The first is a conclusion that the argument as a whole seeks to refute”，A的后半句错了，是态度方向错了，这可是大问题噢，teddy可能一直纠结于claim和conclusion之间没有看清楚这个地方，直接把that conclusion理解成自己心目中真正的main conclusion了，但不要忘了，从语法的角度，that conclusion只能指代这句话前面出现过的那个conclusion噢~~
另外teddy，小鹿和你的想法不太相同，觉得BF2就是一个main conclusion，因为后面有明显标志“since”，since后面的内容表示对前面的支持和解释，说明since前面的内容应该是一个整体，main conclusion。即便像是teddy理解的，BF2中只是后半句是conclusion，前半句是支持，那么这整个句子，仍然包含了main conclusion，我们似乎不应该仅仅因为选项中说的BF2是main conclusion而不是main conclusion and its support就判定B是错的~

teddybearj4

啊~~~~小鹿一语中的啊！！！对呀，是support that conclusion我昨天是为什么纠结这么久啊！

谢谢小鹿~~~我实在是太不仔细了~