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
32
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.
What is a possible negative effect of olestra according to some critics?
选项
A、It may impair the digestive system.
B、It may affect the overall fat intake.
C、It may increase the risk of dancer.
D、It may spoil the consumers’ appetite.
答案
C
解析
一些批评家说olestra可能阻止身体吸收维生素A、D、E和K,它还可能阻止身体对能减少癌症、心脏病等疾病发生的类胡萝卜素的吸收。在这些批评家看来,食用olestra可能会增加患痛症的危险。
转载请注明原文地址:https://kaotiyun.com/show/ilOK777K
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
Peoplecouldeatmorecocoa-richproductssuchasdarkchocolatebutnotdrinkteaiftheywanttolowertheirbloodpressure,G
Inthelate1960s’,manypeopleinNorthAmericaturnedtheirattentiontoenvironmentalproblems,andnewsteel-and-glassskysc
A、Usesofcoldseawater.B、Irrigatingdesertareas.C、Techniquesforpreservingtheenvironment.D、Techniquesofcultivatingpl
A、Jobless.B、Wrongideaabouttheworktheydo.C、Choosetheircareersundertheinfluenceofthesefalseimages.D、Voidcertain
随机试题
X线机准直器(遮线器)正确分型中有
国际检疫传染病有
某工程钢筋加工有现场制作和外包加工两个方案。现场制作方案的固定费用12万元,每吨加工费用150元;外包加工每吨加工费用250元。则仅从经济上考虑时,现场制作方案的适用范围是钢筋总加工量在()。
某石化公司双苯厂发生火灾爆炸事故,事故产生的主要污染物苯、苯胺和硝基苯等有机物进入河流,引发严重水体污染事件,还造成当地直接财产损失2800万元。问题:请分析说明该火灾爆炸事故的火灾类别及火灾等级标准。
指数化型证券组合只是一种模拟证券市场组合的证券组合。
根据合同法及相关规定,平等民事主体之间的下列哪种协议适用合同法的规定?
阳春三四月,漫山遍野的樱花________腰肢,长长的枝头上,粉色、红色的小花朵都探出了头。走进山间,会感觉步入了花的海洋。放眼望去,到处是漫天的樱花,片片樱花烂漫不羁,仿佛凡间精灵,舞动着最美的________。填入画横线部分最恰当的一项是:
-5/13,1/13,( ),1,19/13
Aphysicalexaminationisa______tojoiningthearmy.
A、TOEFLB、GREC、GMATD、IELTSC
最新回复
(
0
)