prep 12 求助

12.        (25359-!-item-!-188;#058&001894)

Finding of a survey of Systems magazine subscribers:  Thirty percent of all merchandise 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.

这道题在模考的时候就没弄明白，感觉里面涉及了好几个人，subscriber，advertiser，有点晕。

请NN们帮着解释一下

估计是太累了，现在想明白了，解释如下，如果有同样问题的同志们可以鉴定一下：

由于杂志里广告的诱惑而购买商品的 订阅者 当中有 30％ 是35岁以下的人

由于杂志里广告的诱惑而购买商品的 人 当中 大部分 是35岁以下的人。

因此E

大部分由于杂志里广告的诱惑而购买商品的人不是订阅者。

不过感觉E这个答案如果加一个限定“在35岁以下的、因为广告的诱惑而购买商品的人当中”会更完美

谢谢　 ：）

明白了！！