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
49
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.
Why are nutritionists concerned about adding vitamins to olestra?
选项
A、People may be induced to eat more than is 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
文章最后一段第2句提到“一些营养学家担心这样一来,人们也许会不加限制地享用由代脂肪制成的食品,从而摄取更多的热量”,A与文中所陈述的观点一致;其他三项在文中均没有进行陈述。
转载请注明原文地址:https://kaotiyun.com/show/n6H7777K
0
大学英语六级
相关试题推荐
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、Thegroupplacedinbluelight.B、Thegroupdrinkingthemostwater.C、Thegroupplacedinredlight.D、Thegroupeatingthel
A、Theyfocusonthemselves.B、Theyareperfectionists.C、Theyareafraidofeverything.D、Theyaresensitivetopeople’sopinion
A、Itisattractivetoentrepreneurs.B、Itdemandshugeinvestment.C、Itfocusesonnewproducts.D、Itisintenselycompetitive.
WhyDepressionNeedsaNewDefinition[A]Manypsychiatristsbelievethatanewapproachtodiagnosingandtreatingdepression—li
WhyDepressionNeedsaNewDefinition[A]Manypsychiatristsbelievethatanewapproachtodiagnosingandtreatingdepression—li
WhyDepressionNeedsaNewDefinition[A]Manypsychiatristsbelievethatanewapproachtodiagnosingandtreatingdepression—li
WhyDepressionNeedsaNewDefinition[A]Manypsychiatristsbelievethatanewapproachtodiagnosingandtreatingdepression—li
随机试题
“破釜沉舟”这一成语与下列哪一场战争相关?()
社会生产力发展水平主要的物质标志是()
患者男,21岁,入院前5天在门诊诊断为鼻疖。回家后不听医师劝阻强性挤压排脓,之后出现寒战、高热、头剧痛。检查见眼睑及结膜水肿,眼球突出,眼底静脉扩张和视乳头水肿。诊断考虑是鼻疖并发颅内并发症。该并发症是
A.生长素B.甲状腺激素C.糖皮质激素D.雄激素E.雌激素成年后分泌过多,将导致肢端肥大症的激素是
下列有关咨询工程师的叙述中正确的是()。
对于进口货物许可证、“一批一证”的出口货物许可证、非“一批一证”的出口货物许可证,他们的有效期限分别是()。
关于设立普通合伙企业应当具备的条件,下列说法正确的是()。
清代()年间崖州州守程哲所书,勒石镌字“海判南天”,这是天涯海角最早的石刻。
毛泽东在《论十大关系》中论述的国防建设与经济建设的关系是()。
SergeantOurpoliceacademynolongerrequiresitsapplicantstopassaphysicalexaminationbeforebeingadmittedtotheacadem
最新回复
(
0
)