An influential stock analyst recommends the purchase of three infrequently traded stocks in each of his weekly magazine columns. Unusually large amounts of these stocks are often purchased one day before the magazine appears on the newsstands. This pattern has recurred over a period.
Suppose that the information presented above is accurate. Each of the following statements, if true, could help to explain why the unusually large purchases occurred EXCEPT:
Workers at the company that prints the magazine have used their advance knowledge of the analyst's column to guide their own stock purchases.
Workers at the company that prints the magazine often sell advance copies of the magazine to stockbrokers.
One hundred copies of each issue of the magazine are circulated in the publishing company's office a day before the issue appears on newsstands.
The analyst refuses to submit his column for editorial review before it is printed.
Twenty people in the publishing company have access to the analyst's column before it is printed.
题目是except。。。
股评家会在杂志上推荐杂志,但是出版前一天往往有大量的被推荐的股票被采购,问解释
choice d, 分析家拒绝在出版之前交出他的专栏用于编辑审稿。 correct,该选项杜绝了专栏被提前泄露的可能性,因此更加没法解释现象
advance copy
n. 新书样本
演绎?还是因果?
有影响力的股票分析师会在一个周刊杂志上推荐购买3个稀少的股票,不寻常地是大量的购买发生在杂志出现在报摊的前一天。这种情况已经持续重复了一段时间;问下面的选项都解释了这种现象的发生,除了哪个不行。
选项里ABCE都是说有人在杂志发行前就拿到了消息,只有D是无关选项,所以选D;
因果推理?