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题库 / Prep2007E2-CR-37
The use of radar detectors in commercial vehicles was banned because commercial truck and bus drivers were using these devices to drive faster than the posted speed limit without fear of arrest. Since drivers of noncommercial vehicles also use radar detectors and since speeding decreases safety for any vehicle, use of radar detectors should also be banned in noncommercial vehicles to increase safety.
Which of the following, if true, most strongly supports the argument above?
The average noncommercial-vehicle driver is involved in less long-distance driving than is the average commercial-vehicle driver.
In many places airplanes or helicopters are used rather than radar to locate vehicles traveling faster than the posted speed limit.
The ban on radar detectors in commercial vehicles has been effective in deterring them from speeding.
Traffic accidents involving a truck or bus generally pose a greater threat of injury or death than do other accidents.
Radar detectors are sometimes set off by devices other than the law enforcement devices that the radar detectors were built to detect.
翻译一下答案E：Radar detectors are sometimes set off by devices other than the law enforcement devices that the radar detectors were built to detect.
雷达探测器有时候被其他的设备触发，而不是执法部门的设备触发，虽然雷达探测器就是为了检测这些执法部门的设备而被制造的。（美国的radar detector用来检测执法部门设置在公路上的测速装置，来提醒司机不要超速，以免吃罚单）我之所以错是感觉E看起来意思正确，其实我并没有理解E的意思。C选项正确，因为是通过其他类似措施的例子达到了效果，从而加强了逻辑链。
有雷达警报器的大车司机肆无忌惮超速，所以被禁用警报器。私车司机也用警报器，超速危险，所以小车司机也应被禁用警报器以减少危险。
看选项前，我心中认定正确答案应该是搭桥：私车司机也肆无忌惮超速。
结果发现五个选项都不沾边，排除法选的c
a 就算有关也是削弱
b 其他非雷达测速法对大小车作用一样，并且削弱措施有效性
d 削弱
e 雷达警报器不好用，不仅对雷达叫，对其他不测速的玩意也叫 （set off这里是启动的意思），所以反而可能让司机多减速了，削弱
比的是两种车，而不是为了再次说明trunck的危险性。
这道题也可以用类比做吧，只是他不是正常的类比顺序
已知A相似于B（commercial与noncommercial相似）想要得出B➡️C （noncommericial如果禁止可以保证安全） 若A➡️C则可以加强这个结论
用类比无法解题，用因果的话勉强说C取非削弱了果（如果对商业用车的禁止无效的话，非商业用车也会无效）
commercial vehicles的radar被禁止了，因为商业司机利用radar超速。 noncommercial vehicles 也使用radar，并且speeding会导致安全性降低-> C: noncommercial vehicles 的radar也应该被禁止
choice c, commercial vehicles 禁止使用radar 已经成功得杜绝他们超速
(E) 雷达探测器有时可以是被执法设备之外的装置所启动
E 句说的是个啥子意思嘛