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标题: 求助PREP旧版2 37题 [打印本页]

作者: jyw0411lsq 时间: 2011-3-8 11:44
标题: 求助PREP旧版2 37题

37.(32151-!-item-!-188;#058&006653)

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?

(A) The average noncommercial-vehicle driver is involved in less long-distance driving than is the average commercial-vehicle driver.

(B) In many places airplanes or helicopters are used rather than radar to locate vehicles traveling faster than the posted speed limit.

(D) Traffic accidents involving a truck or bus generally pose a greater threat of injury or death than do other accidents.

(E) Radar detectors are sometimes set off by devices other than the law enforcement devices that the radar detectors were built to detect.
答案是C,
可是我刚开始看到C的时候，一看到effective就觉得和题目说的没关系，当做无关选项，直接排除了，结果绝望之中选择了E,但是E讲的是什么东西我还没有看懂~
CDer们说说C怎么对的，E是什么意思啊？先谢谢好心人的帮助~

作者: sdcar2010 时间: 2011-3-8 12:00
If the ban is EFFECTIVE to force commercial drivers slow down, the same ban is likely to be EFFECTIVE to force noncommercial drivers to slow down.

E is out of scope. A radar detector is a device to detect the presence of a radar within the close vicinity of a vehicle. A radar is used by police to measure the speed of a car passing by. Whether or not a radar detector can be alarmed by other device has nothing to do with the effectiveness of the ban proposed.

作者: little1984 时间: 2012-8-2 12:20
明白了

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