请教LAST-1-1-22

wnlovess

LAST-1-1-22

Question 21-22

If the city council institutes new parking regulations, city revenues will surely increase, since studies have conclusively shown that, if such parking regulations are put into effect, there is an increase in parking violations, and an increase in parking violations will result in a greater number of parking fines collected.

22. If the statements in the passage are true, which one of the following must also be true?

(A) Unless there is an increase in the number of parking violations in the city, city revenues will not increase.

(B) If the city council institutes new parking regulations, the council will fall from favor with the citizens.

(C) The city council will institute new parking regulations only if an increase in city revenues can be expected to result.

(D) If the city council’s new regulations cause more parking violators to be ticketed, the city revenues will increase. D

我的理解是这样的：Premise: pr->cr, pr->pv->pf  可是这样理解是的不出D选项的：pf->cr   除非这个题的问法改为as an premise inserted into the context,但很显然不是的，而是得出的结论，这就很牵强了 

wnlovess

是不是大家都没有这个疑问呢？

gonghao

这种破题也就LSAT有

果：pr-->cr增加

因：pr-->pv-->pf

问题在于这个“因”，没有说明上面的“果”。

D说pv-->cr

[此贴子已经被作者于2007-3-17 20:22:57编辑过]

wnlovess

我明白了，版主，非常感谢，

可是你为什么说这是破题呢？我觉得思路还是很清晰的呀

gonghao

以下是引用wnlovess在2007-3-16 14:48:00的发言：

我明白了，版主，非常感谢，

可是你为什么说这是破题呢？我觉得思路还是很清晰的呀

对LSAT有一种不可明喻的。。。

miffycn

归纳题就是将推理过程复述了一遍！

city revenues will surely increase这是结论

since  if such parking regulations are put into effect, there is an increase in parking violations, and an increase in parking violations will result in a greater number of parking fines collected.这是原因