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? (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. 答案是E这个可以理解，可是我觉得B选项也对。 对于B选项的理解是：heavy coffee drinker 如果戒掉咖啡，就会出现不适反应，比如头疼之类的。 这就说明他们得靠咖啡来保持头不疼。 所以即使有咖啡影响健康这种说法，他们也不会因此而改变喝咖啡的习惯。所以削弱了咖啡减少是因为影响健康这个说法。 大家怎么理解的，求解释！
Heavy drinkers明显减少咖啡消费后，将会导致此症状，暗示了那些heavy drinkers不能大量减少咖啡消费。而事实上，咖啡的消费数量是大幅减少了，那就说明是non-heavy drinkers大量减少甚至停止咖啡的消费了，但题目中并未提及这一群体减少的原因。故个人认为B无法削弱题目结论——咖啡消费减少时来源于意识增强。
Heavy drinkers明显减少咖啡消费后，将会导致此症状，暗示了那些heavy drinkers不能大量减少咖啡消费。而事实上，咖啡的消费数量是大幅减少了，那就说明是non-heavy drinkers大量减少甚至停止咖啡的消费了，但题目中并未提及这一群体减少的原因。故个人认为B无法削弱题目结论——咖啡消费减少时来源于意识增强。
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发表于 2010-12-23 09:27:13
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