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5. A recent report determined that although only three percent of drivers on Maryland highways equipped their vehicles with radar detectors, thirty-three percent of all vehicles ticketed for exceeding the speed limit were equipped with them. Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.
The conclusion drawn above depends on which of the following assumptions?
(A) Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not.
(B) Drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed.
(C) The number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with radar detectors.
(D) Many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report.
(E) Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered in the report.

答案是B,不明白为什么它是assumption
实在是一点也看不出来:(( 五个选项没一个看着顺眼的
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注意发现论据,推导出现的概念与结论中的概念不同
ets就喜欢玩这一着,考概念之间的细微差别,大量的假设题与削弱题就出在这里。
------- 一点小建议

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遇到这种题,就头晕

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厉害!这道题很搞

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恍然大悟啊~~~~

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从论据只能推出:安装装置比没装置更容易因超速罚款
结论:安装装置比没装置更容易超速。
假设:超速罚款比没罚款的更容易超速(架桥)

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