请教OG-171

piaoxiangyuan

171. A recent report determined that although only three percent of drivers on Maryland
highways equipped their vehicles with radar detectors, thirty-three percent of all vehicles
ticketed for exceeding the speed limit were equipped with them. Clearly, drivers who equip
their vehicles with radar detectors are more likely to exceed the speed limit regularly than
are drivers who do not.
The conclusion drawn above depends on which of the following assumptions?
(A) Drivers who equip their vehicles with radar detectors are less likely to be ticketed for
exceeding the speed limit than are drivers who do not.
(B) Drivers who are ticketed for exceeding the speed limit are more likely to exceed the
speed limit regularly than are drivers who are not ticketed.
(C) The number of vehicles that were ticketed for exceeding the speed limit was greater
than the number of vehicles that were equipped with radar detectors.
(D) Many of the vehicles that were ticketed for exceeding the speed limit were ticketed
more than once in the time period covered by the report.
(E) Drivers on Maryland highways exceeded the speed limit more often than did drivers on
other state highways not covered in the report.

答案b 几次都未答对，请问怎样分析此题题干与答案的关系，有思路吗？

swimmingfrogs

此题关键在于逻辑的连续性和严密性。B补上了缺的一环。整个的逻辑题为一逻辑链条，此题就是明显的链条的不完整。被罚款和开的快，这一逻辑关系需建立才能推出结论。

SunnyApples

題解的真好，一針見血，頂一下.

lisahuangs

QUOTE:

以下是引用swimmingfrogs在2008-9-26 19:58:00的发言：
此题关键在于逻辑的连续性和严密性。B补上了缺的一环。整个的逻辑题为一逻辑链条，此题就是明显的链条的不完整。被罚款和开的快，这一逻辑关系需建立才能推出结论。

我也是忽略了这个gap!

wenmigfo90

QUOTE:

以下是引用swimmingfrogs在2008-9-26 19:58:00的发言：
此题关键在于逻辑的连续性和严密性。B补上了缺的一环。整个的逻辑题为一逻辑链条，此题就是明显的链条的不完整。被罚款和开的快，这一逻辑关系需建立才能推出结论。

我怎么觉得这个不是GAP啊，因为前提已经说明他们的关系了“thirty-three percent of all vehicles ticketed for exceeding the speed limit were equipped with them” ，B补的应该是regularly这个GAP

ballparks

解此题的角度。

前提：被传票超速的车中有很多装雷达的车。

结论：装雷达的车regularly
  容易超速

B选项： 被传票超速的车
  regularly
  容易超速

GAP补上。可以看成装雷达的车是被传票超速车的一个部分

piaoxiangyuan

谢谢各位，明白了！！！！！！！