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
2018-08-25
51
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.
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 spoil the consumers’ appetite.
C、It may impair the digestive system.
D、It may affect the overall fat intake.
答案
A
解析
第6段第5句提到“一些批评家认为Olestra阻止人体吸收维生素A、D、E、K和类胡萝卜素,而类胡萝卜素却是一种能减少癌症及心脏病发病率的化合物”,因此,A正确;B与文章所陈述之意相悖;C和D文中没有提及。
转载请注明原文地址:https://kaotiyun.com/show/96H7777K
0
大学英语六级
相关试题推荐
A、MostadvertisementsonTVarecheatingconsumers.B、WatchingTVcostsusmuchmoney.C、Peoplespendtoomuchtimewatchinguse
A、Theuniquecultures.B、People’seatinghabits.C、People’scharacters.D、Theclimateandnature.C本题问的是根据男士所说,厄瓜多尔和哥伦比亚主要区别是什么。
A、Eatingmoresaltmeansmoreheartattacks.B、Lesssaltissureofreducingmanyheart-relateddiseases.C、Eatinglesssaltmay
A、Saltisquitenecessaryforthehealthofhumans.B、Eatingtoomuchsaltcoulddoharmtotheheart.C、Thequantityofsaltva
WhyDepressionNeedsaNewDefinition[A]Manypsychiatristsbelievethatanewapproachtodiagnosingandtreatingdepression—li
WhyDepressionNeedsaNewDefinition[A]Manypsychiatristsbelievethatanewapproachtodiagnosingandtreatingdepression—li
WhyDepressionNeedsaNewDefinition[A]Manypsychiatristsbelievethatanewapproachtodiagnosingandtreatingdepression—li
WhyDepressionNeedsaNewDefinition[A]Manypsychiatristsbelievethatanewapproachtodiagnosingandtreatingdepression—li
随机试题
反向间接凝集试验阳性时
A.肾盂B.肾柱C.肾乳头D.肾动脉E.肾静脉开口于肾小盏的是
郑某,男,69岁,右侧腹股沟斜疝嵌顿2小时,经手法复位成功。留院观察重点是
国债期货合约中必不可少的基本要素包括( )。
多媒体的信息载体不包括的是()。
认知结构学习理念认为学习的实质是主动地形成()。
我国事业单位分为全额拨款、差额拨款和自收自支三种类型。在很多人的意识中,全额拨款的事业单位“旱涝保收”,最具“含金量”,只要干好工作就能“衣食无忧”;而自收自支的事业单位则需要想尽办法去创收,员工感觉“压力山大”。此外,自收自支事业单位和全额、差额拨款事业
《汉书·刑法志》:“景帝元年,下诏曰;‘加笞与重罪无异,幸而不死,不可为人。其定律:笞五百曰三百,笞三百曰二百。’狱尚不全。至中六年,又下诏曰:‘加笞者,或至死而笞未毕,朕甚怜之。其减笞三百曰二百,笞二百曰一百。’又曰:‘笞者,所以教之也,其定棰令。’丞相
按照“一国两制”的构想。台湾作为特别行政区,可以拥有比香港、澳门特别行政区更大的自治权,这主要指的是
Aperson’shomeisasmuchareflectionofhispersonalityastheclotheshewears,thefoodheeatsandthefriendswithwhomh
最新回复
(
0
)