首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Imagine eating everything delicious you want—with none of the fat That would be great, wouldn’t it? New "fake fat" products
Imagine eating everything delicious you want—with none of the fat That would be great, wouldn’t it? New "fake fat" products
admin
2016-04-30
37
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 can 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)"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 fat 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.
Why are nutritionists concerned about adding vitamins to olestra?
选项
A、People may be induced to eat more than is necessary.
B、It may trigger a new wave of fake food production.
C、It may lead to the over-consumption of vitamins.
D、The function of the intestines may be weakened.
答案
A
解析
文章最后一段第2句提到“一些营养学家担心这样一来,人们也许会不加限制地享用由代脂肪制成的食品,从而摄取更多的热量”,A与文中所陈述的观点一致;其他三项在文中均没有进行陈述。
转载请注明原文地址:https://jikaoti.com/ti/iGyFFFFM
0
大学英语六级
相关试题推荐
SevenStepstoaMoreFulfillingJobA)Manypeopletodayfindthemselvesinunfulfillingworksituations.Infact,oneinfourw
WhenIwasachild,myteethusedto【B1】______inseveraldifferentdirections,and【B2】______thatinvolvedratherexpensive【B3】__
WhenIwasachild,myteethusedto【B1】______inseveraldifferentdirections,and【B2】______thatinvolvedratherexpensive【B3】__
WhenIwasachild,myteethusedto【B1】______inseveraldifferentdirections,and【B2】______thatinvolvedratherexpensive【B3】__
A、Becausethewaterpressureisgreaterthanairpressure.B、BecausethefirstCometscrashedinthewater.C、Becausethereisl
A、Thesupermarketisconvenient.B、Thesupermarketishugeandhecanfindeverythingheneeds.C、Thegoodsinthesupermarketa
A、Thewomanhatedthemantalkingthroughoutthemovie.B、Thewomansawacomedyinsteadofahorrormovie.C、Thewomanprefers
A、Itwillreducegovernmentrevenues.B、Itwillstimulatebusinessactivities.C、Itwillmainlybenefitthewealthy.D、Itwillc
A、Overamillionabandonedcarsaretowedfromthestreetseachyear.B、Onethirdofthenation’scarsareabandonedinthestre
A、Blackdoctorsweren’tallowedtousemedicalequipment.B、Blackdoctorswerehatedbypatients.C、Blacksweren’tallowedtodo
随机试题
Inanew【C1】________publishedinthejournalHeart,researchersfoundthatSwissadultswhotookoneortwodaytimenapsperwee
电针仪最大输出电压为40伏以上时,最大输出电流应限制在()
按照《公路工程抗震设计规范》(JTJ004—1989)关于液化判别的原理,某位于8度区的场地,地下水位在地面下10m处,该深度的地震剪应力比τ/σe(τ为地震剪应力,σe为该处的有效覆盖压力)最接近于下列()项数值。
[资料二]L企业于2011年10月20日向庄某签发一张转账支票,出票日期为10月20日,付款人为Q商业银行,支票金额为20万元。L企业的财务人员在出票时,未记载收款人名称,授权庄某自己补记。庄某补记收款人名称后,向其开户银行W商业银行委托收款,将
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性。()
春秋战国时期,古琴音乐已具有一定的艺术表现能力,“伯牙鼓琴、子期知音”的故事早已深入人心。伯牙所奏琴曲为()。
A公司是一家无杠杆公司,其预期有永续的税前收益,每年3500万元。目前该公司权益的必要报酬率是20%。该公司每年年末均把所有的收益作为股利发放。公司在外发行的普通股股数为150万股。公司税税率为35%。公司正在计划调整资本结构,按该计划其将发行4000万元
下列情形不应当认定为立功的有()。
有以下程序#include<stdio.h>yoidmain(){chars[]=’’012xy\08s34f4w2’’;inti,n=0;for(i=0;s[i]!=0;i++)if(s[i]>=’0’&&s[i]<=’9’)n++
Inanexperimentconductedlastautumn,scientistsmadeexactcopiesofahumanembryoforthefirsttime.Thereisadelicatel
最新回复
(
0
)