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题目材料：
Potatoes are naturally rich in salicylates, substances believed to reduce the risk of heart attack. Although fried potatoes contain fats and substantially increase the risk of heart attack, boiled potatoes turned out to be prepared without any fats at all. Therefore, if what is commonly believed about salicylates is in fact true, boiled potatoes would be a useful addition to the diet of anyone who wants to reduce his or her risk of heart attack.
Which of the following is an assumption on which the argument depends?
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AThe only way to prepare potatoes without using harmful fats is to boil them.
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BThere are sufficient amounts of salicylates in fried potatoes to offset the harmful effects of the fats that fried potatoes contain.
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CPeople who increase their consumption of boiled potatoes generally decrease their consumption of fried potatoes.
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DApart from salicylates, there are no substances in potatoes that reduce the risk of heart attack.
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EThe salicylates in potatoes do not break down into inactive substances at the temperatures that potatoes typically reach when they are boiled.
E显示答案
