GWD-28-17，进来说说看看

v22 · 发表于 2005-9-10 16:51:00

28-17: In the nation of Partoria, large trucks currently account for 6 percent of miles driven on Partoria’s roads but are involved in 12 percent of all highway fatalities. The very largest trucks – those with three trailers – had less than a third of the accident rate of single- and double-trailer trucks. Clearly, therefore, one way for Partoria to reduce highway deaths would be to require shippers to increase their use of triple-trailer trucks.

Which of the following, if true, most seriously weakens the argument?

A: Partorian trucking companies have so far used triple-trailer trucks on lightly traveled sections of major highways only.

B: No matter what changes Partoria makes in the regulation of trucking, it will have to keep some smaller roads off-limits to all large trucks.

C: Very few fatal collisions involving trucks in Partoria are collisions between two trucks.

D: In Partoria, the safety record of the trucking industry as a whole has improved slightly over the past ten years.

E: In Partoria, the maximum legal payload of a triple-trailer truck is less than three times the maximum legal payload of the largest of the single-trailer trucks

E

很多兄弟选了A，但是我看不出A说了另外的证据来削弱结论/

而俺选E，原因是E说三层的卡车本身装的东西少3倍，（与题目的事故率少1/3对应），这样就是说3层的卡车出事故少可能因为这个。如果按照结论的建议，大卡车换成3层的，那么3层就自然不能装原来大卡车的那么多东西，那就不能换，削弱了呀。，。。。。

555，大家讨论好么

v22 · 发表于 2005-9-11 22:03:00

来来顶顶

lawyer_1 · 发表于 2005-9-12 08:05:00

A提出它因，所以削弱。E法律规定的载重量和原文无关。因为你不要知道原文的事故少时的triple truck的实际载重。

howardwang · 发表于 2005-9-12 11:16:00

v22 · 发表于 2005-9-12 13:07:00

A是有道理，但是当时选E的时候在想，因为E提供了另外的信息。哎呀，lawyer，我有时候就是难以区分加强和削弱要提供的另外信息和无关项之间的差异。。。。。怎么办？应该如何想？？

cdqhndx · 发表于 2006-5-4 21:06:00

選A。

因爲該選項說：三個拖車的卡車只在（主要）高速公路的輕裝貨物運輸車道行駛，所以才事故率低。

gonghao · 发表于 2006-5-4 21:45:00

A.Partorian trucking companies have so far used triple-trailer trucks on lightly traveled sections of major highways only。

因为Partorian trucking companies已经使用了triple-trailer trucks 但是还是牵扯进了12％的高速公路事故。所以weaken题目里的建议。

E：In Partoria, the maximum legal payload of a triple-trailer truck is less than three times the maximum legal payload of the largest of the single-trailer trucks

最大载荷和事故率之间的联系并没有交代，也许没有联系的，也许是成正比的。但文中提到的是应该使用三个拖车而不是单个拖车的货车没有提到载荷量

[此贴子已经被作者于2006-5-4 21:46:00编辑过]

joyceorange · 发表于 2006-11-11 20:36:00

以下是引用gonghao在2006-5-4 21:45:00的发言：

A.Partorian trucking companies have so far used triple-trailer trucks on lightly traveled sections of major highways only。

因为Partorian trucking companies已经使用了triple-trailer trucks 但是还是牵扯进了12％的高速公路事故。所以weaken题目里的建议。

E：In Partoria, the maximum legal payload of a triple-trailer truck is less than three times the maximum legal payload of the largest of the single-trailer trucks

最大载荷和事故率之间的联系并没有交代，也许没有联系的，也许是成正比的。但文中提到的是应该使用三个拖车而不是单个拖车的货车没有提到载荷量

有理就顶～

hedge · 发表于 2006-12-9 13:51:00

i chose E

hedge · 发表于 2006-12-9 13:58:00

A中artorian trucking companies have so far used triple-trailer trucks on lightly traveled sections of major highways only.

trucking companies 卡车公司让三节车只在路况好的告诉公路行驶,并不能代表整个Partorian 地区所有的三节卡车都如此. 故A选项以偏概全，错！

支持E,这其实是一道数学题。就像前面有一题雨量的CR

按照题设：The very largest trucks—those with three trailers—had less than a third of the accident rate of single-and double-trailer trucks.

而如果E的话，假设运同样一批货物，一节卡车运的次数为3，那么三节车运的次数肯定多于1次。想想如果某批货动用3量一节卡车，那3节车的哥们就得跑两次。这样根据less than a third of the accident rate ，这还指不定这个替代方法是好的。所以E削弱

[此贴子已经被作者于2006-12-9 14:13:11编辑过]

GWD-28-17，进来说说看看

GWD-28-17，进来说说看看

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