[求助]GWD的一题，看了好久也不明白。。。

amei88

Newspaper editorial:

In an attempt to reduce the crime rate, the governor is getting tough on criminals and making prison conditions harsher.  Part 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.

正确答案是C，为什么？？？

amei88

怎么都没有人理我

fatluckytang

以下是引用amei88在2009/8/29 12:44:00的发言：

Newspaper editorial:

In an attempt to reduce the crime rate, the governor is getting tough on criminals and making prison conditions harsher.  Part 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.

正确答案是C，为什么？？？

要降低犯罪率——设监狱课堂(有被deny)------然而，这个是迎合了目的的（就是暗示说监狱课堂可以降低犯罪率吧）-------原因是那些接受过监狱教育的人，释放后很少再犯罪了。

C就是最后一句的改写。不过最后一句很难懂呀……

卢静changsha

文章的意思是说 减少这个监狱课程对减少犯罪是不利的，因为上完这个课程的人很少犯罪，也就是说作者基于了一个假设：课程是减少这些上课的人再犯罪几率的原因，而C 选项便是进行了它因排除，排除了一个另外的原因：是因为这些人上课的人在上课前本身就很少有再犯罪倾向了

coolhaoming

题干：P上大学课程的罪犯出来犯罪少 Q停止大学课程是不对的。

A不能上大学课程就不能阻止犯罪。逆否命题：能阻止犯罪，就必须上大学课程。但由    此不能推出P。

B以前的罪犯不会像普通人群那样容易犯罪。推出监狱生活很重要。但与大学课程无关

C选大学课程的罪犯不是已经比其它罪犯更不可能犯罪。取非：选课程的罪犯之前更不容易犯罪。注意：此取非后作为前提，加上P这一条件能够推出非Q即停止大学课程是对的，而取非前则能推出Q。