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" product
Imagine eating everything delicious you want -with none of the fat. That would be great, wouldn’t it? New "fake fat" product
admin
2010-05-09
46
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 stone 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 (营养物) 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.
OIestra, 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 olestea 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 olestras 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.
The result of the rearch for an easily digestible fat turned out to be ______.
选项
A、commercially useless
B、just as anticipated
C、somewhat controversial
D、quite unexpected
答案
D
解析
根据第三段,研究人员本想寻找一种婴儿容易消化的脂肪,结果却发现了一种根本不能消化的脂肪,因此,结果是出人意料的。
转载请注明原文地址:https://kaotiyun.com/show/4lOK777K
0
大学英语六级
相关试题推荐
Attheverybeginning,SamWaltonbelievedthathewouldearnmuchmoneyevenifhesoldproductsatlowerpricesthanhisoppon
Attheverybeginning,SamWaltonbelievedthathewouldearnmuchmoneyevenifhesoldproductsatlowerpricesthanhisoppon
Humanbehaviorismostlyaproductoflearning______(然而,动物的行为主要依靠本能).
Peoplecouldeatmorecocoa-richproductssuchasdarkchocolatebutnotdrinkteaiftheywanttolowertheirbloodpressure,G
Inthelate1960s’,manypeopleinNorthAmericaturnedtheirattentiontoenvironmentalproblems,andnewsteel-and-glassskysc
Inthelate1960s’,manypeopleinNorthAmericaturnedtheirattentiontoenvironmentalproblems,andnewsteel-and-glassskysc
Inthelate1960s’,manypeopleinNorthAmericaturnedtheirattentiontoenvironmentalproblems,andnewsteel-and-glassskysc
A、Usesofcoldseawater.B、Irrigatingdesertareas.C、Techniquesforpreservingtheenvironment.D、Techniquesofcultivatingpl
随机试题
患者郄某,干呕呃逆,饭后食停胃脘不得下,小便正常,舌苔自滑。治宜选用()
A.秦艽B.羌活C.独活D.川乌E.木瓜治疗湿痹,筋脉拘挛,脚气水肿,应选择的药物是
患者,男性,外伤后出血、烦躁,肢端湿冷,脉搏105次/分,脉压小。应考虑为
下列国家或地区不要求对来自中国大陆货物木质包装进行检疫处理的是( )。
根据期权定价理论,欧式看涨期权的价值主要取决于()。
著名哲学家黑格尔当年从神学院毕业的时候,他的老师给他写过一则评语:“黑格尔,健康状态不佳。中等身材,不善辞令,沉默寡言。天赋高,判断力健全,记忆力强。文字通顺,作风正派,有时不太用功,神学有成绩,虽然尝试讲道不无热情但看来不是一个优秀的传道士。语言知识丰富
有四条直线,可以组成“王”或“口”等,也可组成长方形、棱形等图形,结合实际,谈谈你的理解。
材料1:古罗马法学家乌尔比安曾经说过:法是善良和公正的艺术。材料2:古希腊哲学家苏格拉底曾经说过:只要程序公正,哪怕实体结果不公正,也要接受它,因为司法公正肇始于程序公正。材料3:《宪法》第126条规定:人民法院依照法律规定独立行使审判
毛泽东思想是中国特色社会主义理论体系的重要思想渊源,主要体现在
Themoreparentstalktotheirchildren,thefasterthosechildren’svocabulariesgrowandthebettertheirintelligencedevelop
最新回复
(
0
)