单选题 An economist concluded that Kregg Company deliberately discriminated against people with a history of union affiliation in hiring workers for its new plant. The economist's evidence is that, of the 1,500 people hired to work at the new plant, only 100 had ever belonged to a labor union, whereas in Kregg Company's older plants, a much higher proportion of workers have a history of union affiliation.
Which of the following is an assumption on which the economist's argument depends?

A、 None of the people with a history of union affiliation who were hired to work at the new plant were union organizers.
B、 Applicants for jobs at the new plant were not asked by Kregg's recruiters whether they had every belonged to a labor union.
C、 In the plants of some of Kregg's competitors, the workforce consists predominantly of union members.
D、 The company believes that the cost of running the new plant will be lower if labor unions are not represented in the workforce.
E、 (E) The pool of potential candidates for jobs at the new plant included some people, in addition to those Kregg hired, with a history of union affiliation.

【正确答案】 E

【答案解析】[解析] 本题为“B，A”型的假设。(E)说明适合新工厂工作岗位的潜在候选人中有一些参加过工会联盟，表明确实存在有工会联盟的人合格的情况，但Kregg就是没有录用。如果我们把(E)取非，变为压根就没有适合于新工厂工作的有工会联盟历史的人，那么上面结论“Kregg故意歧视参加过工会联盟的人”必然不对。因此，(E)是一个很好的假设；(A)、(B)、(C)均为无关选项；而(D)为一典型的“有他因”的反对选项。