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
2014-03-22
40
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.
What is a possible negative effect of olestra according to some critics?
选项
A、It may increase the risk of cancer.
B、It may impair the digestive system.
C、It may spoil the consumers’ appetite.
D、It may affect the overall fat intake.
答案
A
解析
细节题。根据文章第六段介绍,一些对olestra持批判态度的人认为,它会妨碍维生素A、D、E、K以及类胡萝卜素的吸收,而类胡萝卜素正是减少癌症以及心脏病发病率的一种化合物,因此A为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/JqXO777K
0
在职攻硕英语联考
相关试题推荐
Icouldn’tsleeplastnightbecausethetapinthebathroomwas______.
Whatarethoseofuswhohavechosencareersinscienceandengineeringabletodoaboutourcurrentproblems?First,wecan
【T1】TheagreementisoverseenbytheCommitteeonAgriculturewhichreviewsprogressintheimplementationofcommitments,andi
TheInternetisaglobalnetworkthatconnectsothercomputernetworks,togetherwithsoftwareandprotocolsforcontrollingthe
Neverreveal_________companyinformation,likeproductsintheworksorfinancialperformance.
ItisincongruousthatthenumberofBritishinstitutionsofferingMBAcoursesshouldhavegrownby254percentduringaperiod
Despitetheweb,wewatchmoretelevisionthanever.Inthechaosoftoday’smediaandtechnologybrawl—iPodvs.Zune,Googl
Thepossibilitythattheexplosionwascausedbysabotagecannotbe______.
Alineinasongasks,"Doesanyonereallyknowwhattimeitis?"Thisquestioncouldeasilyapplytocalendars!Didyouknowth
The______questioninthiscaseiswhethertheaccusedhadamotiveforthiscrimeornot.
随机试题
患者女,30岁。反复出现抽搐发作两天,病前曾因工作上的事情与同事发生过争吵。抽搐发作为阵发性,发作时呼之不应,口角歪斜,对光反射存在,1分钟左右缓解,事后有时能回忆发作时的情况。脑电图检查结果正常,脑脊液压力为0.75kPa,白细胞数为10×109/L
关于病案的收集,确保病案资料收集的完整性的措施包括
水洗的目的主要是
下列机构中,属于政府会计主体的有()。
下列关于特别风险的说法中,错误的是()。
53,61,68,82,(),103,107
公民行使一切权利和自由的基础是公民享有()
我国法律规定,债权人领取提存物的权利,自标的物被提存之日起5年内不行使而消灭。该5年的期间属于()。
Headmired______whospecializedinsophisticatedtechnologyinnationaldefence.
A、Verycoolweather.B、Verywarmweather.C、Rainingweather.D、Fairweather.DWhat’sthelongrangeforecastforthenextfewda
最新回复
(
0
)