单选题 A random sample of shoppers responded to the questions contained in a marketing survey. Six months later, another random sample of shoppers responded to exactly the same questions, except that the questions were now arranged in a different order. The pattern of responses to many individual questions was greatly different, thus demonstrating that a question will sometimes elicit different responses depending only on what question precedes it.
The argument above depends on which of the following assumptions?

A、 The reordering of the questions did not put each question in a different sequential position from its position six months previously.
B、 Shoppers who respond to a marketing survey do not generally remember six months later what responses they gave.
C、 There was no motive for the second survey except that of discovering whether the ordering of the questions mattered.
D、 The survey was not composed of questions to which shoppers would give different responses at different times of the year.
E、 (E) The first sample of shoppers did not have any individuals in common with the survey sample of six months later.

【正确答案】 D

【答案解析】[解析] 本题推理是由一个事实“相同的问题在6个月后以不同的顺序向另一随机取样的顾客提问得到不同的回答”，得出一个解释性的结论，“不同的顺序是原因”，属于典型的“B、A”题型，其隐含假设是除了A以外没有别的原因导致B。由于(D)指出调查不包含顾客的因素，所以(D)可以作为一个假设，因此(D)为正确答案；(A)与推理无关；(B)易误选，但由于6个月前后抽样的顾客都是随机的，所以不存在购物者完全相同的问题；(C)的“motive”为新概念；(E)说明不了任何问题且与推理无关，所以不对。