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
2014-01-13
21
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 that the new compound can rob the body of essential vitamins and nutrients and can also cause unpleasant side effects in some people. So it is 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 "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, 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.
Olestra is different from ordinary fats in that______.
选项
A、it passes through the intestines without being absorbed
B、it facilitates the absorption of vitamins by the body
C、it helps reduce the incidence of heart disease
D、it prevents excessive intake of vitamins
答案
A
解析
细节事实题。又根据原文第四段尾句可知,regular fat只含有three molecules脂肪酸。根据第六段首句中的too large for the intestines to absorb,与选项A对应。故答案为A。
转载请注明原文地址:https://jikaoti.com/ti/VO6YFFFM
0
考博英语
相关试题推荐
The______ofourcivilizationfromanagriculturalsocietytotoday’scomplexindustrialworldwasaccompaniedbyupheavaland,
IntheUnitedStatesandinmany【51】countriesaroundtheworld,therearefourmainwaysforpeopletobeinformed【52】developmen
IntheUnitedStatesandinmany【51】countriesaroundtheworld,therearefourmainwaysforpeopletobeinformed【52】developmen
(81)Realestate,inbroaddefinition,islandandeverythingmadepermanentlyapartthereof,andthenatureandextentofone’s
Aswomendemonstrateagrowingappetiteforconsumertechproducts,retailersandmanufacturersarestillonlybeginningtocate
Inacompetitiveeconomy,theconsumerusuallyhasthechoiceofseveraldifferentbrandsofthesameproducts.Underneaththeir
Pricesdeterminehowresourcesaretobeused.Theyarealsothemeansbywhichproductsandservicesthatareinlimitedsupply
AtleastsincetheIndustrialRevolution,genderroleshavebeeninastateoftransition.Asaresult,culturalscriptsaboutm
NickYoung创立了中国发展简报,并编辑英文版本,他说,上周多位北京警方和地方统计局的官员告知他该刊物进行了“未经批准的调查”,因此被认为违反了有关收集统计数据的1983年法律。杨先生说,在该刊物发行的十几年中,当局并未提供颁布此法令的明确
NickYoung创立了中国发展简报,并编辑英文版本,他说,上周多位北京警方和地方统计局的官员告知他该刊物进行了“未经批准的调查”,因此被认为违反了有关收集统计数据的1983年法律。杨先生说,在该刊物发行的十几年中,当局并未提供颁布此法令的明确
随机试题
下面函数的功能是()。sss(s,t)char*s,*t;{while(*s);while(*t)*(s++)=*(t++);returns;}
的值是[]
急性心肌梗死主要是由于
所谓"民强促国富、国富促民强"体现了社会医学的
下列各种化学物质中,不属于外来化合物的是
在审查担保类文件时,公司业务人员应特别注意担保协议中的担保期限。()
甲、乙、丙三人于2017年共同出资成立一家有限合伙企业,其中甲是普通合伙人,负责合伙事务的执行,乙、丙是有限合伙人。在合伙协议无其他特殊约定的情况下,乙于2019年2月1日以合伙企业的名义与不知情的丁签订了一份买卖合同,则甲、乙对该份合同承担无限连带责任,
偏见(陕西师范大学)
请在当前幻灯片中插入“桌面\声音\第一章.mp3”声音,并设为自动播放。
"Howmanymoneyisinyourpiggybank?"Mr.76______HallaskedJoy."Idon’tknow.Butit’sheavy.""Howaboutyou,Tim?Haveyo
最新回复
(
0
)