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Homeowners aged 40 to 50 are more likely to purchase ice cream and are more likely to purchase it in larger amounts than are members of any other demographic group. The popular belief that teenagers eat more ice cream than adults must, therefore, be false.
The argument is flawed primarily because the author
A fails to distinguish between purchasing and consuming
B does not supply information about homeowners in age groups other than 40 to 50
C depends on popular belief rather than on documented research findings
D does not specify the precise amount of ice cream purchased by any demographic group
E discusses ice cream rather than more nutritious and healthful foods
申友解析
题干：40-50岁人群比起其他年龄段人群更愿意购买且大量购买冰淇淋，所以通常大家所认为的青少年比成人更喜欢吃冰淇淋这个观点是错误的。
题目：这个逻辑的缺陷在哪？
分析：题干关键对象是成年人和未成年人两组人群，关键属性是愿意购买冰淇淋和愿意吃冰淇淋。题目考查的是割裂逻辑关系型的负向逻辑，该逻辑缺陷在于混淆了关键对象的关键属性。
A选项正确；
B选项否定原文给定信息；
C选项STRAWMAN ARGUMENT；
D选项讨论无关属性消费量；
E选项引入无关对象。
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