【备考每日练】GMAT逻辑真题精选实例讲解（二十七练）

2015年06月24日16:09 来源：小站整理

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GMAT备考，除了背背背，更重要的就是练练练!通过练习，巩固知识，熟练技巧，最终才能在GMAT考试中发挥出色，取得好成绩，所以练习的重要性不言而喻。因此，小编为大家精心准备了GMAT考试各类题型的练习题和答案解析，帮助大家每日一练，为考试做好准备。一起来看今天的题目吧。

今日练习题为逻辑题，题目如下

A report that many apples contain a cancer-causing preservative called Alar apparently had little effect on consumers. Few consumers planned to change their apple-buying habits as a result of the report. Nonetheless, sales of apples in grocery stores fell sharply in March, a month after the report was issued.

Which of the following, if true, best explains the reason for the apparent discrepancy described above?

A In March, many grocers removed apples from their shelves in order to demonstrate concern about their customers’ health.

B Because of a growing number of food-safety warnings, consumers in March were indifferent to such warnings.

C The report was delivered on television and also appeared in newspapers.

D The report did not mention that any other fruit contains Alar, although the preservative is used on other fruit.

E Public health officials did not believe that apples posed a health threat because only minute traces of Alar were present in affected apples.

正确答案：

A

题目解析：

Premise：报道有问题的苹果产生很小影响，很少人会改变购买习惯。

Conclusion：然而销量还是下滑了。

问题是best explain，那么就要解释因果关系论证。

因为不是削弱，是加强，所以B，C很容易排除，无关选项。

D选项虽然可以联想其他水果会卖得更好所以这个苹果就相应少了，但是可以理解为间接因果关系，没有对直接因果关系进行论证，也就是没有让premise涵盖conclusion。

E选项也是无关选项，并不能起到任何加强或削弱。

所以选A。