首页
登录
职称英语
Imagine eating everything delicious you want with none of the fat. That woul
Imagine eating everything delicious you want with none of the fat. That woul
游客
2025-03-24
15
管理
问题
Imagine eating everything delicious you want with none of the fat. That would be great, wouldn’t it?
New "fake fat" products appeared on store shelves in the United States recently, but not everyone is happy about it. Makers of the products, which contain a compound called olestra, say food manufacturers can now eliminate fat from certain foods. Critics, however, say the new compound can rob the body of essential vitamins and nutrients and also cause unpleasant side effects in some people. So it’s up to consumers to decide whether the new fat-free products taste good enough to keep eating.
Chemists discovered olestra in the late 1960s, when they were searching for a fat that could be digested by infants more easily. Instead of finding the desired fat, the researchers created a fat that can’t be digested at all.
Normally, special chemicals in the intestines (肠道) "grab" molecules of regular fat and break "them down so they can be used by the body. A molecule of regular fat is made up of three molecules of substances called fatty acids.
The fatty acids are absorbed by the intestines and bring with them the essential vitamins A, D, E and K. When fat molecules are present in the intestines with any of those vitamins, the vitamins attach to the molecules and are carried into the bloodstream.
Olestra, which is made from six to eight molecules of fatty acids, is too large for the intestines to absorb. It just slides through the intestines without being broken down. Manufacturers say it’s that ability to slide unchanged through the intestines that makes olestra so valuable as a fit substitute. It provides consumers with the taste of regular fat without any bad effects on the body. But critics say olestra can prevent vitamins A, D, E and K from being absorbed. It can also prevent the absorption of carotenoids (类胡萝卜素), compounds that may reduce the risk of cancer, heart disease, etc.
Manufacturers are adding vitamins A, D, E and K as well as carotenoids to their products now. Even so, some nutritionists are still concerned that people might eat unlimited amounts of food made with the fat substitute without worrying about how many calories they are consuming. [br] We learn from the passage that olestra is a substance that ______.
选项
A、contains plenty of nutrients
B、makes foods fat-free while keeping them delicious
C、renders foods calorie-free while retaining their vitamins
D、makes food easily digestible
答案
B
解析
细节题。文章第二段的相关内容介绍,生产不含脂肪食品的厂商,在他们的产品中加入了一种称为olestra的化合物,并宣称他们可以因此将某些食品中的脂肪去掉。由此可见,olestra具有去除食品中脂肪的功能。此外,文章的第一句就提出了一个充满诱惑力的可能性:我们可以大吃任何美味的食物,而不摄人脂肪。根据文章的逻辑发展,olestra正是用来实现这一可能性的物质,因此B项最全面、正确。
转载请注明原文地址:https://tihaiku.com/zcyy/4011445.html
相关试题推荐
Imagineeatingeverythingdeliciousyouwantwithnoneofthefat.Thatwoul
Thekitchenwassmalland______sothatthedisabledcouldreacheverythingwitho
SpeakerA:Thankyouforeverythingyou’vedoneformeduringmystayhere.Spea
Imagineeatingeverythingdeliciousyouwantwithnoneofthefat.Thatwoul
Imagineeatingeverythingdeliciousyouwantwithnoneofthefat.Thatwoul
Imagineeatingeverythingdeliciousyouwantwithnoneofthefat.Thatwoul
Imagineeatingeverythingdeliciousyouwantwithnoneofthefat.Thatwoul
Itisdifficulttoimaginewhatlifewouldbelikewithoutmemory.Themeani
Itisdifficulttoimaginewhatlifewouldbelikewithoutmemory.Themeani
Itisdifficulttoimaginewhatlifewouldbelikewithoutmemory.Themeani
随机试题
WhendotheswallowsflyawayfromSanJuanCapistrano?[br][originaltext]M:S
Readinginvolveslookingatgraphicsymbolsandformulatingmentallythesounds
避暑山庄原为清代皇帝避暑和从事各种政治活动的场所,见证了清朝二百多年的繁荣与衰败。BuiltforemperorsofQingDynastytoa
为预防机械伤害事故发生,应设置必要的安全防护措施,下列机械安全防护措施中,正确的
属于单环β-内酰胺类药物的是A:阿莫西林 B:氨曲南 C:亚胺培南 D:克
甲、乙、丙三人共同享有一所房屋的所有权,甲占70%,现在甲想把这间房屋向银行抵
火锅:板桌A.果树:水果 B.船舶:水运 C.潜艇;海洋 D.太阳
(2021年真题)某建筑面积为2000m2带吊顶的地下商场,设有自动喷水灭火系统
一个心理健康的人,必须保持自尊:一个人只有受到自己所尊敬的人的尊敬,才能保持自尊
根据会计核算程序,下列关于工程成本的核算的程序正确的是:(1)区分为哪些应当计入
最新回复
(
0
)