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Pro-Tect Insurance Company has recently been paying out more on car-theft claims than it expected. Cars with special antitheft devices or alarm systems are much less likely to be stolen than are other cars. Consequently Pro-Teet, as part of an effort to reduce its annual payouts, will offer a discount to holders of car-theft policies if their cars have antitheft devices or alarm systems.

Which of the following, if true, provides the strongest indication that the plan is likely to achieve its goal?

正确答案: C

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语文分册CR29,求助求助求助!!!!!

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楼主
发表于 2013-4-1 18:43:10 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式

Pro-Tect Insurance Company has recently been paying out more on car-theft claims than it expected. Cars with special antitheft devices or alarm systems are much less likely to be stolen than are other cars. Consequently Pro-Tect, as part of an effort to reduce its annual payouts, will offer a discount to holders of car-theft policies if their cars have antitheft devices or alarm systems.

which of the following, if true, probides the strongest indication that the plan is likely to achieve its goal?
A: The decrease in the risk of car theft conferred by having a car alarm is greatest when only a few cars have such alarms.
B: The number of policyholders who have filed a claim in the past year is higher for Pro-Tect than for other insurance companies.
C: In one or two years, the discount that Pro-Tect is offering will amount to more than the cost of buying certain highly effective antitheft devices.
D: Currently, Pro-Tect cannot legally raise the premiums it charges for a given amount of insurance against car theft.
E: The amount Pro-Tect has been paying out on car-theft claims has been greater for some models of car than for others.

答案是C,  我选了A。。。。看后面的解释发现我所理解的A和解释说的A完全相反!!。。。我现在已经看不懂A在讲什么了。。。我选的时候以为:当一些车有这种警报器的情况下,有警报的车被偷的风险的减少是最大的。。。难道不是说警报器减少了车辆被偷么。。。为什么A的官方解释是说:If having more cars equipped with car alarms reduces those alarms' effectivity in preventing thefts....

PS:CD的搜索功能彻底不能用了是么?~~~~(>_<)~~~~
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沙发
 楼主| 发表于 2013-4-1 21:11:29 | 只看该作者
upupupupupupupup
板凳
发表于 2013-4-2 17:50:32 | 只看该作者
你对答案A的理解是没有问题的:当仅有一些车有警报器的时候,车因为有警报器而被偷的风险减少的最大。这个答案是个明显的干扰项,说的很饶舌。但是这个选项很容易排除,因为它说的问题,和本题的逻辑根本不相干。
地板
发表于 2017-2-12 21:40:47 | 只看该作者
想象一个开口向下的二次函数.横轴是装备报警器车的数量,纵轴是decrease in the risk.
这样的车越多,decrease in the risk就越小,那么这个公司的计划就越无用
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