求教一道LR题，谢谢~

mumu126 · 发表于 2010-3-6 22:38:57

A large number of drivers routinely violate highway speed limits. Since driving at speeds that exceed posted limits is a significant factor in most accidents, installing devices in all cars that prevent those cars from traveling faster than the speed limit would prevent most accidents.
Which one of the following is an assumption on which the argument depends?
(A) A person need not be a trained mechanic to install the device properly.
(B) Most accidents are caused by inexperienced drivers.
(C) A driver seldom needs to exceed the speed limit to avoid an accident when none of the other drivers involved are violating the speed limit.
(D) Most drivers who exceed the speed limit do so unintentionally.
(E) Even if the fines for speed-limit violations were increased, the number of such violations would still not be reduced.
我看好像一个都不对。哪位同学帮我解答一下，谢谢~

roddickdidi · 发表于 2010-3-7 23:27:18

我觉得是A...
因为conclusion是说.. would prevent most accidents,然后evidence就是超速是导致事故的主要原因..
所以作者的思路是安装的这个东西－>不超速－>基本没事故
所以我觉得A可以解释中间这个gap..就是大家都会操作然后没有了其他的事故...
正确的答案LZ知道么？
我也比较好奇..

fjatpku · 发表于 2010-3-7 23:51:15

A选项 out of scope了装不来完全可以让别人来装么
应该是C 用取非削弱来考虑的话若否定C选项，则这种装置将经常造成原来不会发生的事故，那么原来的让结论就不能成立了

roddickdidi · 发表于 2010-3-8 09:09:08

Yup I'm with u..I realized out of scope thing when I woke up this morning and rush to here to change it but uve already corrected me... Haha ya I think it's C

mumu126 · 发表于 2010-3-8 14:55:43

A选项 out of scope了装不来完全可以让别人来装么
应该是C 用取非削弱来考虑的话若否定C选项，则这种装置将经常造成原来不会发生的事故，那么原来的让结论就不能成立了

-- by 会员 fjatpku (2010/3/7 23:51:15)

我想你是对的，我想通了，谢谢

求教一道LR题，谢谢~

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