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题库 / Prep2007E1-CR-40
Columnist: People should avoid using a certain artificial fat that has been touted as a resource for those whose medical advisers have advised them to reduce their fat intake. Although the artificial fat, which can be used in place of fat in food preparation, has none of the negative health effects of fat, it does have a serious drawback: it absorbs certain essential vitamins, thereby preventing them from being used by the body.
In evaluating the columnist's position, it would be most useful to determine which of the following?
Whether increasing one's intake of the vitamins can compensate for the effects of the artificial fat
Whether the vitamins that the artificial fat absorbs are present in foods that contain the fat
Whether having an extremely low fat intake for an extended period can endanger the health
Whether there are any foods that cannot be prepared using the artificial fat as a substitute for other fats
Whether people are generally able to detect differences in taste between foods prepared using the artificial fat and foods that are similar except for the use of other fats
C：人们应该避免食用人工脂肪。
P：人工脂肪吸收必要的维生素，阻止这些维生素被人体所使用。
A选项如果是肯定的话，即摄入维生素可以弥补人工脂肪带来的不利影响，那么推出的结论是“人们可以食用人工脂肪”，否定了原结论。
A选项如果是否定的话，即摄入维生素不可以弥补人工脂肪带来的不利影响，那么推出的结论是“人们应该避免食用人工脂肪”，肯定了原结论。
这道题的关键是要找到columnist position到底是什么，注意不是artificial 发fat has a serious drawback.
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