og12 40题

teddyabc

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！

sayysong

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。

teddyabc

明白了，也就是说，这个选项说的只是heavy drinker，以偏概全。不能说heavy drinker 不能减少喝咖啡，咖啡的销售量就不会降低，因为还有好多喝咖啡的人不是heavy drinker

liexodus

原题要求是咖啡销量和消费者意识的关系，然后B自顾自地说咖啡与健康的关系，这明显是答非所问嘛。

reddragon

不是一篇概全的问题。本体逻辑结构如下：

同时发生了A和B，所以B导致A。如果要削弱的话，只有两种办法：找到另外一个导致A的原因，或者是削弱/否定B
答案E起到了另外一个原因

答案B基本上没有任何增强或者削弱的总用，withdraw symphton, 尤其还是mild，跟健康之间的关联太远，所以不能否定B。
而且这个Withdraw symphton明显不可能成为导致A的原因