PREP2.117求解

uneverknow777

117.(30804-!-item-!-188;#058&005538)(GWD 3-Q32)



Newspaper editorial:

In an attempt to reduce the crime rate, the governor is getting tough on criminals and making prison conditions harsher.  art of this effort has been to deny inmates the access they formerly had to college-level courses.  However, this action is clearly counter to the governor's ultimate goal, since after being released from prison, inmates who had taken such courses committed far fewer crimes overall than other inmates.

Which of the following is an assumption on which the argument depends?

A. Not being able to take college-level courses while in prison is unlikely to deter anyone from a crime that he or she might otherwise have committed.

B. Former inmates are no more likely to commit crimes than are members of the general population.

C. The group of inmates who chose to take college-level courses were not already less likely than other inmates to commit crimes after being released.

D. Taking high school level courses in prison has less effect on an inmate's subsequent behavior than taking college-level courses does.

E. The governor's ultimate goal actually is to gain popularity by convincing people that something effective is being done about crime.

答案是C，但是不太明白为什么，有哪位大侠帮忙解释下，谢谢啦~

uneverknow777

有人没？

sdcar2010

Necessary assumption.  Use negation.

If you negate C, you get: The group of inmates who chose to take college-level courses WERE already less likely than other inmates to commit crimes after being released. If so, these group of inmate are GOOD inmates to begin with, with or without the college-level course training. Therefore, the argument that allowing an inmate to take such courses in prison would decrease an inmate's chance of committing crimes after his or her release is false.

Thus, C is the necessary assumption

uneverknow777

哦，这样就明白了，谢谢LS了。呵呵

mudiduange

原文，比较对象：参加了大学教育的人《------》没参加大学教育的人
C，比较对象：和原文一致。
这里还有一个要点：
 要证明一个变化（参加大学教育）导致另外一个变化（犯罪率低），就是要表明之前的状态是一样的或者其他条件保持不变。

Feelalive

膜拜sdcar