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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
注意问法，In evaluating the columnist's position
而columnist的前提是，因：artifiical fat can absorb the vitamins，得出的结论是果：artificial fat 有drawback，所以我们要削弱这个结论，就要将这个因果关系断开，或者找到因的干扰因素，最后的目的是削弱结论，那么用其他的方法，比如increasing the intake of vitamins，来将这个隔断因果联系。