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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.
正确答案是E，我错选了C。但是这道题与之前的题一比较，我就感觉E与原题讲述的东西没有关系啊，原题没有牵扯价格，正如OG 10 186题
36. Offshore oil-drilling operations entail an unavoidable
risk of an oil spill, but importing oil on tankers
presently entails an even greater such risk per
barrel of oil. Therefore, if we are to reduce the risk of
an oil spill without curtailing our use of oil, we must
invest more in offshore operations and import less oil
on tankers.
Which of the following, if true, most seriously weakens
the argument above?
（A） Tankers can easily be redesigned so that their
use entails less risk of an oil spill.
(B) Oil spills caused by tankers have generally been
more serious than those caused by offshore
operations.
(C) The impact of offshore operations on the
environment can be controlled by careful
management.
(D) Offshore operations usually damage the ocean
floor, but tankers rarely cause such damage.
(E) Importing oil on tankers is currently less
expensive than drilling for it offshore.
正确答案A
感觉两个题刚好是相反的，我也刚好都选择了错误的答案。这种削弱题应该只要有另外一个相反的观点也能达成原结论就可以了吧？为什么186题不能选D或者E呢？
诚心请教，在此谢过！ |
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发表于 2010-1-21 03:04:28
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