eamou
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eitputsi
Coke
正确答案：C解析：本题细节定位于第三段最后一句话“Whilecaffei
eis
otthoughttobea
addictivesubsta
cei
itselfthereisco
siderableevide
cethatoveraperiodoftimetheco
sumptio
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ehastobei
creasedi
orderforitsstimulati
geffecttobemai
tai
ed，a
dsosalesofCokeperhapsbe
efitasaresult”。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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