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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.
这道题C选项我认为也是正确的。如果咖啡销量下降是因为人们意识到咖啡因有害，那么应该所有品牌的咖啡销量都下降，因为所有品牌的咖啡都含咖啡因。如果高端品牌保持不变，低端品牌下降，则说明品牌可能是下降的原因。
有两个常见的反驳C选项的说法在此先毙掉：
说法一：高端不变，低端下降，正说明总销量下降，和题干愿意是一致的，没有weaken。
毙掉原因：记住GMAT的CR弱化题中从来不质疑既定事实，而是质疑原因分析，C选项是在质疑销量下降的原因，即C选项认为原因不是人们意识到咖啡因有害，而是可能和品牌相关。
说法二：可能高端品牌咖啡因含量低，所以C是strenghthen。
毙掉原因：想象力太丰富。
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发表于 2018-12-10 22:41:42
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