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  3. The average age and racing experience of the drivers at the Indianapolis 500 aut

The average age and racing experience of the drivers at the Indianapolis 500 aut

游客2025-02-26  37
问题 The average age and racing experience of the drivers at the Indianapolis 500 automobile race increased each year between 1965 and 19The reason for the increase is that high-speed racing drivers were living longer than their predecessors. Race-car safety features that reduced the severity of crashes of the kind that formerly took drivers’ lives were primarily responsible for the increase in the average age of the Indianapolis 500 competitors. Which of the following, if true, would be most likely to be part of the evidence used to show that safety features on the cars that protected drivers in major crashes were responsible for the increase in the average age of drivers at the Indianapolis race?
选项 A、Younger drivers at high-speed racetracks were involved in major accidents at a slightly higher rate than were older drivers between 1965 and 1980.
B、Major accidents on high-speed racetracks occurred at about the same frequency in the years after 1965 as in the years before 1965.
C、The average age of drivers attempting to qualify for the Indianapolis 500 decreased slightly between 1965 and 1980.
D、Accidents on highways in the United States occurred at about the same frequency in the years after 1965 as in the years before 1965.
E、Other safety features, involving the condition of the racetrack and the uniforms worn by the drivers while driving, were adopted at Indianapolis between 1965 and 1980.
答案 B
解析 本题推理是由一个事实“Indianapolis 500赛车手平均年龄与赛车经验增长”，而得出一个解释结论说“Safety features是原因”，属于典型的“B，A”模式，假设答案多为“除了A之外没有别的因素影响B”，而假设答案就是支持。(B)中的“the same frequency”属于否定概念，表示没有事故发生率的变化，即否定了有别的原因影响B，因此(B)为正确答案；(A)是一个无关比较；(C)与推理无关；(D)讨论的是“U—nited states”，与我们讨论的“Indianapolis”出现了范围差异；(E)指出other safety features的采纳使用，指出了别的因素的存在，所以(E)对段落推理起到了反对作用。
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