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题库 / Prep2012-CR-38
Surveys in Domorica indicate that only 10 percent of Domoricans in their twenties read a newspaper regularly, while more than half of all Domoricans over thirty read a newspaper regularly. Although Domoricans in their twenties constitute a large proportion of the population, newspaper publishers nonetheless predict that ten years from now, the percentage of Domoricans who regularly read a newspaper will probably be no lower than it is today.
Which of the following, if true, provides the strongest grounds for the newspaper publishers' prediction?
The number of Domoricans in their twenties is less than the number of Domoricans over thirty.
The number of newspapers in Domorica has been gradually increasing over the past several decades.
The proportion of Domoricans in their twenties who regularly read a newspaper has always been low.
The surveys defined a regular reader of a newspaper as someone who reads a newspaper more than twice a week.
The proportion of Domoricans who regularly read a newspaper was higher 20 years ago than it is today.
选项C的解释】
第一句说明——现在的数据：20岁的读报少，30岁的读报多，20岁占了人口的一大部分
结论是：十年后，读报人的比例不变/增加。
选项C类似填补推理逻辑。原文中只说明了当下的数据，并没有说明随着年龄增加，读报的比例就一定会上升。选项C填补了这一逻辑，C说20岁读报的人一直很少；这也就是说现在数据的30岁这批人10年前他们读报也很少，10年后也就是现在，有超过一半的人读报了，逻辑就是：年龄增加，就会使得读报增多。
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