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你现在所在的位置: 每日一题 右边箭头 【GMAT逻辑CR】8814-OG16

【GMAT逻辑CR】8814-OG16

浏览次数:2573 日期:2017-05-17 15:12:40
In the last decade there has been a significant decrease in coffee consumption. During this same time, there has been increasing publicity about the adverse long-term effects on health of the caffeine in coffee. Therefore, the decrease in coffee consumption must have been caused by consumers' awareness of the harmful effects of caffeine. Which of the following, if true, most seriously calls into question the explanation above?

In the last decade there has been a significant decrease in coffee consumption. During this same time, there has been increasing publicity about the adverse long-term effects on health of the caffeine in coffee. Therefore, the decrease in coffee consumption must have been caused by consumers' awareness of the harmful effects of caffeine.

Which of the following, if true, most seriously calls into question the explanation above?

 A

On average, people consume 30 percent less coffee today than they did 10 years ago.

 B

Heavy coffee drinkers may have mild withdrawal symptoms, such as headaches, for a day or so after significantly decreasing their coffee consumption.

 C

Sales of specialty types of coffee have held steady as sales of regular brands have declined.

 D

The consumption of fruit juices and caffeine-free herbal teas has increased over the past decade.

 E

Coffee prices increased steadily in the past decade because of unusually severe frosts in coffee-growing nations.


【申友解析】


正确答案:E


题干:在过去十年里咖啡的消费量下降。同时,咖啡因对于人体健康长期影响的宣传得到了普及。所以,咖啡消费量下降一定是因为消费者对咖啡负面效应的意识得到了加强。
问题:下面哪一个选项最大程度上质疑了题干中的解释。
分析:题干中的论据和论点相互之间在一定程度上是有合理逻辑关系的,所以我们要质疑题干逻辑最有可能的思考方向是引入他因削弱。
选项A, 当前咖啡的人均消费量比十年前下降了百分之三十。为题干中的解释间接提供了论据,逻辑方向相反。
选项B,饮用咖啡很多的人群在减少咖啡饮用量之后诸如头疼此类症状得到了缓解,同样是在支持题干中的解释逻辑,逻辑方向相反。
选项C,特殊品种咖啡的销售量维持稳定,普通咖啡品牌则下降。无关属性,无法削弱题干解释。
选项D,果汁和无咖啡因的茶类消费量在过去十年上升,侧面为题干中的解释提供了论据,逻辑方向相反。
选项E,咖啡价格在过去十年内因为产地自然灾害稳步上升。价格上升导致销量下降这是一个最合理削弱题干解释的他因,正确!

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