GWD逻辑套题第19套第30提是一道黑体题，大家知道在众多的复习资料中黑体题并不多，所以总结和分析一些黑体题目还是很必要的。
Q30:
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.
犯罪学家：一些立法者主张把那些在过去已经犯了两次严重罪行，并且又再度犯案的罪犯判无期徒刑。这些立法者相信这个举措会显著地降低犯罪率，因为它会把那些可能犯罪的人从街头清除掉了。但是，这个主张忽略了那些因为犯罪而被关了两次的人已经老的不太可能再多次犯案。如果监狱里都关了些这样的人，那么其结果和立法者想达到的目的是明显相反的，因为这样监狱就不太可能关更年轻的罪犯，而这是这些更年轻的罪犯犯大案的多。
In the argument as a whole, the two boldfaced portions play which of the following roles?
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. 第二个是反驳第一个的理由，而不是支持第一个。
The first is a conclusion that the argument as a whole seeks to refute; the second is the main conclusion of the argument. 正确。
The first is the main conclusion of the argument; the second is an objection that has been raised against that conclusion. 第一个是整个argument要驳斥的，而不是其结论。
The first is the main conclusion of the argument; the second is a prediction made on the basis of that conclusion. 同C。
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.第一个是立法者希望通过某种方式能达到的目的，而这个目的是这个argument认为通过那种方式不可能达到其目的，第二个是如果采取立法者的提议会造成的必然结果，而不是一个例外的情况。
您还可能关注：
