标题: 狗狗一道逻辑，谢谢XDJM们先啦！ [打印本页] 作者: xuqiuchen 时间: 2010-10-7 13:55 标题: 狗狗一道逻辑，谢谢XDJM们先啦！ Finding of a survey of Systems magazine subscribers（订阅者）: Thirty percent of all merchandise（经销商） orders placed by subscribers in response to advertisements in the magazine last year were placed by subscribers under age thirty-five. Finding of a survey of advertisers in Systems magazine: Most of the merchandise orders placed in response to advertisements in Systems last year were placed by people under age thirty-five.
For both of the findings to be accurate, which of the following must be true? (A) More subscribers to Systems who have never ordered merchandise in response to advertisements in the magazine are age thirty-five or over than are under age thirty-five. (B) Among subscribers to Systems, the proportion who are under age thirty-five was considerably lower last year than it is now. (C) Most merchandise orders placed in response to advertisements in Systems last year were placed by Systems subscribers over age thirty-five. (D) Last year, the average dollar amount of merchandise orders placed was less for subscribers under age thirty-five than for those age thirty-five or over. (E) Last year many people who placed orders for merchandise in response to advertisements in Systems were not subscribers to the magazine. 选E 为什么啊？作者: killerinJP 时间: 2010-10-7 14:16
同问...除了A其他几个选项都看不明白作者: snowinhawaii 时间: 2010-10-7 14:52
两个finding之间存在一个gap，第一个finding的结果是说merchandise order中只有30%是35岁以下的“订阅者”make的，而第二个由advertiser做的servey则说MOST merchasndise order是35岁以下的“人”make的，那么中间的gap在哪里呢？ 那就是说有很多35岁以下的“人”不是“订阅者”咯~所以E是对的~