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
2025-03-23
20
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] Olestra is different from ordinary fats in that______.
选项
A、it facilitates the absorption of vitamins by the body
B、it passes through the intestines without being absorbed
C、it helps reduce the incidence of heart disease
D、it prevents excessive intake of vitamins
答案
B
解析
细节题。从第五段可知,普通的脂肪细胞只有3个称为脂肪酸的分子。脂肪酸在经过肠道的时候,会被肠道吸收,并且带来至关重要的维生素A、D、E和K。第六段指出,olestra由6到8个脂肪酸分子所构成,因为体积太大不能分解而无法被肠道吸收,因此B符合文章原意。
转载请注明原文地址:https://tihaiku.com/zcyy/4010056.html
相关试题推荐
Thekitchenwassmalland______sothatthedisabledcouldreacheverythingwitho
SpeakerA:Thankyouforeverythingyou’vedoneformeduringmystayhere.Spea
Imagineeatingeverythingdeliciousyouwantwithnoneofthefat.Thatwoul
Itisdifficulttoimaginewhatlifewouldbelikewithoutmemory.Themeani
Itisdifficulttoimaginewhatlifewouldbelikewithoutmemory.Themeani
Itisdifficulttoimaginewhatlifewouldbelikewithoutmemory.Themeani
Itisdifficulttoimaginewhatlifewouldbelikewithoutmemory.Themeani
Itisdifficulttoimaginewhatlifewouldbelikewithoutmemory.Themeani
Itisdifficulttoimaginewhatlifewouldbelikewithoutmemory.Themeani
Imaginegoingtoyourdoctorwithacomplaintoffrequentheadaches.Yourdo
随机试题
AbundanceIsaLifestyleI.Whatisabundance?1)al
Whatcomesnext?[img]2021m4s/ct_ve01004004m_eyyjsdiq_0307_202104[/img]A、
[originaltext]AnewprogramcalledAdelanTECHLeadershipishelpingstudent
以下关于信赖利益的说法,正确的有()。A.信赖利益是指一方基于对另一方将与其
抗真菌药的分类及代表药搭配正确的是A.抗生素类-克霉唑 B.唑类-伊曲康唑
胎怯的病变脏腑主要在A.脾、肾 B.心、肝 C.心、肾 D.心、脾 E.
关于笔试客观题优点的表述,正确的是( )。A.方便采用现代化的批阅工具 B.
机体某一方面的机能受损甚至缺失后,可通过其他方面的超常发展得到部分补偿,这体现了
注册会计师在确定重要性时通常选定一个基准。下列因素中,注册会计师在选择基准时不需
(2016年真题)根据《招标投标法实施条例》,属于以不合理条件限制、排斥潜在投标
最新回复
(
0
)