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
考研
Imagine eating everything delicious you want—with none of the fat. That would be great, wouldn’t it ? New "fake fat" product
Imagine eating everything delicious you want—with none of the fat. That would be great, wouldn’t it ? New "fake fat" product
admin
2015-01-15
36
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(营养物)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 blood stream.
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 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
从文章的最后一段可以看出,生产商将维生素加入食物后,营养学家们关注的是人们可能吃过多的食物,而不去注意他们吸收了多少卡路里,因此,答案应为A。
转载请注明原文地址:https://kaotiyun.com/show/Ovhi777K
0
在职申硕(同等学力)英语
相关试题推荐
Thewordscienceisheardsoofteninmoderntimesthatalmosteverybodyhassomenotionofitsmeaning.Ontheotherhand,its
Allexpertsagreethatthemostimportantconsiderationwithdietdrugsiscarefully______therisksandbenefits.
Somepeoplefeelsadaboutglobalizationbecausetheybelieveitwill______Whichofthefollowingcouldbethebesttitleof
Researchersbelieveoneway(tominimizing)(thedamage)istoget(better)at(predicting)theriskoffire.
Withoutquestion,people’slivesinChinahaveimproveddramaticallyinthepasttwodecades.
Oneofthereasonswhyscienceisimportantforchildrenisthatmanyofthemwill______Peoplewithascientificattitude___
IftwoscientistsatLosAlamosNationalLaboratoryarecorrect,Peoplewillstillbedrivinggasoline-poweredcars50yearsfro
Somecriminalslangissohighlydevelopedthatpickpockets,forexample,can______aconversationinfrontofavictimwithout
ThecurrentemergencyinMexicoCitythathastakenoverourlivesisnothingIcouldeverhaveimaginedformeormychildren.
ThecollapseoftheEarth’smagneticfield—whichguardstheplanetandguidesmanyofitscreatures—appearstohavestartedseri
随机试题
计算简答题:根据所给材料回答问题。(需计算后回答的问题,须列出算式;每个问题计算过程中的小数均保留实际位数,计算结果有小数的,小数保留2位。)2018年年初,A出版社出版了由著名教育专家李可撰写的《我的教育故事》一书,定价28元,首印30000册
Thinkofsuccessaswater.Inthecourseofprogress,itflows.Waterbreaksrockandreshapesland.Successsimilarlychangest
在零售药品中,凭盖有医疗单位公章的医师处方限量供应的是()
_________,不能采取口头形式提出。
甲公司欠乙公司购货款350000元。由于甲公司发生财务困难,短期内不能偿还货款,随后双方协商,乙公司同意甲公司以其生产的产品偿还债务。该产品的公允价值为200000元,实际成本为120000元,增值税税款为34000元。乙公司为该项债权计提了5
上市公司甲公司是ABC会计师事务所的常年审计客户,主要从事汽车的生产和销售。A注册会计师负责审计甲公司2017年度财务报表,确定财务报表整体的重要性为1000万元,明显微小错报的临界值为30万元。资料四:A注册会计师在审计工作底稿中记录
所谓为人师表是指教师要在各方面都成为学生和社会上人们效法的表率、榜样和楷模。这一涵义是由()决定的。
孔子是儒家学派的创始人,也是教师的楷模。他在教学中注重培养人内在素养和外在表现的统一,以德才兼备、温文尔雅的君子作为其教育目标。下列选项中,展现德才兼备的教学思想的是()。
一、注意事项 1.《申论》考试,与传统作文考试不同,是对分析材料的能力、表达能力的考试。 2.作答参考时限:阅读资料40分钟,作答110分钟。 3.仔细阅读给定的资料,按照后面提出的“申论要求”依次作答。二、资料1.新一轮全国地下
南京国民政府的法律体系由()组成。
最新回复
(
0
)