问道经典逻辑题。。死活理不顺

zscsl

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 form 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.

每个选项都分析一下最好啦。谢谢大家。。

phanly

选c?
AC很难区别
bde明显无关

lisa8899

I chose C.

zscsl

对的哟。。A。。笨到爆。。就是想不明白。。C我懂得肯定对。。

dogshead

我选C。
原文结论是：大学课程让人改过自新，出狱后少犯罪，政府现在取消大学课程（其本意是让条件艰苦吓唬人别犯罪）造成更多人犯罪，更多人入狱
这个结论最重要的假设就是：大学课程让人改过自新，而不是选这个课程的人本来就有改过的倾向

keaneice

题干：不给犯人提供学习大学课程的机会 --以--> 降低犯罪率。 conclusion：因为以前学习那些课程的犯人，释放后二进宫的rate远远低于那些没上课的，所以政府的目标不会实现。

C。那些选择上课的人，不是本来就倾向于不会再犯罪。
题干的conclusion的在“after being released form prison, inmates who had taken such courses committed far fewer crimes overall than other inmates” 基础上推出的结论。也就是假设是 学习那些课程，让犯人降低“再犯率”。
如果此选项不成立，或者理解为否命题，那么conclusion的原因就不再成立，也就不能推出“政府的目标不能实现。”

所以选项C为答案。

keaneice

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.
可以只留主干： 不能上课，不会阻止犯罪。
这个不能证明，上课就能阻止犯罪。命题成立，逆命题不一定成立，所以这个不能作为假设支持题干 论据。

ChristopherC

C  not  weaken型assumption
原文这样：为了降低犯罪——政策：谁犯罪不让谁上学！——政策不好：因为上学可以降低犯罪（不让上反而不能降低犯罪、则目的失败）

关键抓住政策不好、找assumption
C ： 那些提出（出狱后）要上大学的，本身【不会】已经比其他没有申请的人(罪犯)  犯罪的可能性小。
试想：把C取非一下：提出出狱后要上大学的、本身已经犯罪的可能性小了——那政策不好（原文conclusion）不就不成立了嘛——因为这说明政策没有不好、不让这些申请大学的人上大学不会提升犯罪率（因为他们本身犯罪可能性就小）  
也可以理解成：如果那些不要上大学的（本身犯罪可能性高）提出上大学、又不让上——当然犯罪下不来了
所以C一定要成立、所以C是原文assume的

phanly

lz,教你一个笨方法，a中有个unlikely,说的不确定，一般为错误选项
另外，a选项的性质是说：课程对犯罪的影响，而c是说：人本身对犯罪的影响
看看提干的argument:也是说人容不容易犯罪，所以c性质更接近
选c

zscsl

谢谢大家~~~~~