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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?

正确答案: A

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再问prep1-40的B

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楼主
发表于 2010-3-14 18:07:06 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
                                                             prep1-40                                                                
                   
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(32869-!-item-!-188;#058&006461)

Columnist:  eople 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 food
以前的解释都说B无关,可没有说为什么。
为什么B无关?
回答是:人造脂肪会吸收那些特定的维生素,从而影响人体吸收。
回答否:举个例子,比如人造脂肪吸收维生素C,柠檬里有维生素C,但是人们食用柠檬时从来不用人造脂肪,所以不会影响人体对维生素C的吸收。
哪错了呀?                                    请指教,谢谢!
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沙发
发表于 2010-3-14 18:30:19 | 只看该作者
我想lz没搞清楚的一点是:人造脂肪和被它吸收的维生素不一定需要在同一种食品里。无论是在同一样食品还是两种食品中,只要他们同时摄入就会导致维生素丢失,从而导致健康问题。因此,人造脂肪和维生素是否在同一食品中并无关系。

不知道讲明白了没有。如果还有问题可以继续问。
板凳
 楼主| 发表于 2010-3-14 18:57:31 | 只看该作者
哦,是说人造脂肪还能再人肚子里吸收维生素么,对么?
地板
发表于 2010-3-18 09:52:38 | 只看该作者
对的,就是这个意思。
5#
发表于 2010-3-21 18:32:27 | 只看该作者
而且要注意哦 选项B说的是 foods that contain the fat 而不是artificial fat
因此即便是有"必须要在同一食物中才能发生吸收作用的假设",该选项也仍旧是无关的
6#
发表于 2010-4-28 18:49:02 | 只看该作者
而且要注意哦 选项B说的是 foods that contain the fat 而不是artificial fat
因此即便是有"必须要在同一食物中才能发生吸收作用的假设",该选项也仍旧是无关的
-- by 会员 卮言浅夏 (2010/3/21 18:32:27)


这个考虑有问题。the fat必然特指同句话中前面提到的那种fat,即artificial fat。如果是泛指的,不能有the。所以这题的理解还是为原文没有说人造脂肪只能吸收食物中的特种维生素,那不管在什么地方只要人造脂肪和特种维生素碰到了都要吸收,包括在人身体里。所以B不对。
7#
发表于 2010-10-3 20:38:22 | 只看该作者
我觉得无关不无关倒不是关键
此题的关键是原句it absorbs certain essential vitamins, thereby preventing them from being used by the body.
选B可能是考虑到如果吸收自己带来的V那么就不会消耗体内的V了
但是原句并没有分是体内的还是摄入的,只是说防止absorb就不行,所以B其实是违反了原句的
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