请教pp－1－40

40.   (32869-!-item-!-188;#058&006461)

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?

(A) Whether increasing one's intake of the vitamins can compensate for the effects of the artificial fat

(B) Whether the vitamins that the artificial fat absorbs are present in foods that contain the fat

(C) Whether having an extremely low fat intake for an extended period can endanger the health

(D) Whether there are any foods that cannot be prepared using the artificial fat as a substitute for other fats

(E) 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

答案是A为什么我反而感觉b是对的，a不对呢。

A就是说是不是多摄取维他命可以抵消掉人造脂肪的危害。

如果回答是，那么削弱了结论（人造脂肪并没有很强的危害）

如果回答否，那么加强了结论（人造脂肪确实有很大的危害）

明白了，evaluation题目是不是都要用这种思路去考虑

我开始也选B,现在明白，Whether the vitamins that the artificial fat absorbs are present in foods that contain the fat

就算有脂肪的食物里没有这些vitamin,减肥的人也可能从其他途径获得这些vitamin

问题的关键不是比较有脂肪的食物和没脂肪的食物，而在于能否解决vitamin的吸收问题