GWD 28-17

leohymo

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

My best guess is B? Do you have any input?

howardwang

理应是A

楼主自己搜一下，最近刚刚讨论过。

butterfinger

不好意思 17题我只找到这个讨论贴 可以给个连结嘛

BTW 看不太懂A选项的意思

on lightly traveled sections of major highways only.

当初乍看之下以为是现在运用TRIPEL的卡车只在一点点的范围

那不就意味着鼓励使用TRIPLE就可运用在更多方面 继而降低死亡率

我想我大概是哪里搞错了

请各位NN指教

juningw

以下是引用leohymo在2005-9-22 7:26:00的发言：

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

My best guess is B? Do you have any input?

同问。怎么感觉A象是在加强？还是偶没有看懂A选项？

斑竹NN赶快出手指点啊。。。快要考了。谢～

snowyspring

因为最大的卡车现在只在高速公路上的车辆较少区上行驶,所以事故少,但这种车也大量使用的话,可能事故比轻型卡车还多.

五大老

谢谢楼上的解释，这题的A就没读懂..........现在就明白了

soloenti

vote E 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  会使得triple-trailer truck 出车增加  事故机率上升  weaken 结论

fengyun1

vote E 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  会使得triple-trailer truck 出车增加  事故机率上升  weaken 结论

不会呀。triple-trailer truck <=3 single-trailer trucks，出车率比single-trailer trucks少了。不过这好像与weakens the argument无关。你是说和triple-trailer truck 自己比，原文也没建立出车增加---〉事故机率上升的逻辑吧。

tinashih8800

1.         GWD-28-Q17

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.

文章結論是說, 由於調查中結果發現三節卡車比二節/一節卡車出車禍事故少, 所以只要都換成三節大卡車就可以降低出車禍事率.

問要削弱結論.

選項A. 是說三節大卡車一直以來都只有在比較少車流量的高速公路路段行走.

所以只有A 可以削弱結論. 因為A 說明了車禍事故的背景(路段)情況不同, 所以可以證明原文的結論並不能成立.

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

hedge

w我选E