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  3. One of the most successful commercial products ever launched is said to have come about as the result of a mistake. In 1986, Jac

One of the most successful commercial products ever launched is said to have come about as the result of a mistake. In 1986, Jac

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问题    One of the most successful commercial products ever launched is said to have come about as the result of a mistake. In 1986, Jacob’s Pharmacy in Atlanta, Georgia, was selling a nerve tonic known as "French Wine Cola — Ideal Nerve Tonic". By accidentally adding fizzy water instead of still water to the recipe, a pharmacist called John S. Pemberton invented what has today become the most popular soft drink in the world: Coca-Cola. Along with its closest rival — Pepsi — which appeared on the market three years later. Coke has enjoyed great success worldwide, particularly in the past fifty years. Indeed, old bottles and "limited edition" cans can often fetch considerable sums from collectors, and there are even stores which deal exclusively in Coke products and memorabilia.
   What could possibly account for the amazing success of Coca-Cola? How has this combination of carbonated water, sugar, acid and flavorings come to symbolize the American way of life for most of the world? After all, even the manufacturers could hardly describe Coke as a healthy product since it contains relatively high amounts of sugar (admittedly not the case with Diet Coke which contains artificial sweeteners instead of sugar) and phosphoric acid, both of which are known to damage teeth.
   One explanation may be found in the name. The original recipe included a flavoring from the coca plant and probably included small amounts of cocaine (an addictive substance), but since the early part of this century all traces of cocaine have been removed. However, Coke (like all cola drinks) also includes a flavoring from the cola tree; cola extract contains caffeine, which is a stimulant, and the Coca-Cola Company adds extra caffeine for good measure. While caffeine is not thought to be an addictive substance in itself, there is considerable evidence that over a period of time the consumption of caffeine has to be increased in order for its stimulating effect to be maintained, and so sales of Coke perhaps benefit as a result.
   A more likely reason for the enduring popularity of Coke may, however, be found in the company’s enviable marketing strategies. Over the years it has come up with some of the most memorable commercials, tunes, slogans and sponsorship in the world of advertising, variously emphasizing international harmony, youthfulness and a carefree lifestyle. Few other companies (arguably including Pepsi) have been able to match such marketing strategies so consistently or effectively. As suggested earlier, the influences of American culture are evident just about everywhere, and Coca-Cola has somehow come to represent a vision of the United States that much of the rest of the world dreams about and aspires to. Perhaps drinking Coke brings people that little bit closer to the dream.
Which of the following statements about the passage is true?
选项 A、Cocaine and caffeine are addictive substances.
B、At least one of the ingredients of Coke is addictive.
C、The stimulating effect of caffeine is reduced over time unless consumption of it is increased.
D、The Coca-Cola company has gradually increased the amount of caffeine it puts in Coke.
答案C
解析 本题细节定位于第三段最后一句话“While caffeine is not thought to be an addictive substance in itself, there is considerable evidence that over a period of time the consumption of caffeine has to be increased in order for its stimulating effect to be maintained，and so sales of Coke perhaps benefit as a result”。由此可知，咖啡因本身并非一种致瘾物质，但是有相当多的证据表明，为了维持其刺激作用，过一段时间必须增加咖啡因的消耗量，因此，结果就是可乐的销量增加。由此可知，可乐本身并不含有致瘾物质。A项说“咖啡因属于致瘾物质”不正确。B项“可乐中至少有一种成分会让人上瘾”，与原文意思相反，故不正确。原文中并没有说可口可乐公司逐渐增加可乐中的咖啡因成分，故D项错误。因此选择C。
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