pp3-cr-96

[chenemily (天天保持好心情)]

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. 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.
B. So far only the best, most experienced drivers for Partorian trucking
companies have been driving triple-trailer 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.

想請問正解 B

題目的因果: 增加triple-trailer trucks----highway deaths下降

其他選項我都可以排除

可是B是哪裡反駁

請大大幫忙一下

謝

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推 helendo:三節的卡車都是最有經驗的開的,所以事故率最低,可是大家
推 lelu:他因生此果--不是三截卡車不容易肇事,而是會去開三截卡車
→ lelu:的司機都是有經驗的
→ helendo:都改去開三節的,那就沒辦法達到reduce deaths的目的了
→ chenemily:TKS 懂了
推 bagger:我覺得這是GMAT基本考的CR題型樣子
→ bagger:就是給你 因 -> 果  然後請你找理由弱化原因
→ bagger:這時候只要找 不是這個原因而造成這個結果就好了