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" products
Imagine eating everything delicious you want with none of the fat. That would be great, wouldn’t it? New "fake fat" products
admin
2012-05-19
91
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 unchanged through the intestines without being broken down. Manufacturers say it’s that ability to slide unchanged through the intestines that make 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、It may lead to the over-consumption of vitamins.
B、People may be induced to eat more than is necessary.
C、The function of the intestines may be weakened.
D、It may trigger a new wave of fake food production.
答案
B
解析
事实细节题。文章最后一句中的people might eat unlimited amounts of food made with the fat substitute without worrying about how many calories they are consuming指出,营养学家担心,人们会因为不用担心此类食品中所包含的卡路里而无限制地吃。与此意相符的选项为B。
转载请注明原文地址:https://www.kaotiyun.com/show/kNp4777K
0
考研英语一
相关试题推荐
Highoilpriceshavenotyetproducedaneconomicshockamongconsumingcountries,butfurtherrises,especiallysharp(1)_____,
AsasymbolofAmericanconquest,it’seasytoforgethowMcDonald’swasfirstreceivedoverseas.Backin1974,Britonsqueued
ThepurposeofholdingarobotraceistoDr.Thrunstronglyholdthattheautonomousvehicles
ThefirstsentenceinParagraph1isusedbyAmericanschoolchildrenbecauseAccordingtothepassage,whenwasthenewplanet
Inthetwodecadesbetween1929and1949,sculptureintheUnitedStatessustainedwhatwasprobablythegreatestexpansionins
Recentyearshavebroughtminority-ownedbusinessesintheUnitedStatesunprecedentedopportunities—aswellasnewandsignific
ItcanbeinferredfromParagraph1thatoneimportantfactorintheincreasingimportanceofeducationintheUnitedStateswas
Mostofuswouldliketobeboth(1)_____andcreative.WhywasThomasEdisonabletoinventsomanythings?Washesimplymore
Mostofuswouldliketobeboth(1)_____andcreative.WhywasThomasEdisonabletoinventsomanythings?Washesimplymore
Mostofuswouldliketobeboth(1)_____andcreative.WhywasThomasEdisonabletoinventsomanythings?Washesimplymore
随机试题
PowerPoint2010中设置文本字体时,要想使选择的文本字体加粗,在常用工具栏上的按钮是下列选项中的()。
肿瘤病理学的常规形态学检查方法有
建设工程项目管理的内涵是:自项目开始至项目完成,通过项目策划(ProjectPlanning)和项目控制(ProjectControl),以使项目的()得以实现。
2013年1月1日,甲公司从市场上购入乙公司于2012年1月1日发行的5年期债券,划分为可供出售金融资产,面值为2000万元,票面年利率为5%,实际年利率为4%,每年1月5日支付上年度的利息,到期日一次归还本金和最后一次利息。实际支付价款2172.60万元
会计核算的基本前提包括()。
某企业根据用户需要生产了一批特殊产品,利用抽样检验对产品进行验收,试回答下列问题。2代替了()。
经济发展对高等教育的决定作用表现在哪些方面?
战国时期,楚国的()最为发达。
environmentalbenefits.
A.mentallyB.standC.assistD.complexE.shelterF.strollingG.coordinationH.surviv
最新回复
(
0
)