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
考研
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
2012-05-19
26
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 unchanged through the intestines without being broken down. Manufacturers say it’s that ability to slide unchanged through the intestines that make 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.
The result of the search 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
细节推断题。根据第三段最后一句Instead of finding the desired fat,the researchers created a fat that can’t be digested at all可知,olestra的发现出乎意料,D为正确答案。
转载请注明原文地址:https://jikaoti.com/ti/EE0RFFFM
0
考研英语一
相关试题推荐
Americanwomenwere______therighttovoteuntil1920aftermanyyearsofhardstruggle.
Publicityisanypromotionalcommunicationaboutanorganizationoritsproductsthatispresentedbythemediabutisnotpaid
Publicityisanypromotionalcommunicationaboutanorganizationoritsproductsthatispresentedbythemediabutisnotpaid
Highoilpriceshavenotyetproducedaneconomicshockamongconsumingcountries,butfurtherrises,especiallysharp(1)_____,
Eachscientificspecialtyhasitsownsetofjournals.PhysicistshavePhysicalReviewLetters,cellbiologistshaveCell,neuro
Eachscientificspecialtyhasitsownsetofjournals.PhysicistshavePhysicalReviewLetters,cellbiologistshaveCell,neuro
Recentyearshavebroughtminority-ownedbusinessesintheUnitedStatesunprecedentedopportunities—aswellasnewandsignific
Mostofuswouldliketobeboth(1)_____andcreative.WhywasThomasEdisonabletoinventsomanythings?Washesimplymore
Mostofuswouldliketobeboth(1)_____andcreative.WhywasThomasEdisonabletoinventsomanythings?Washesimplymore
Mostofuswouldliketobeboth(1)_____andcreative.WhywasThomasEdisonabletoinventsomanythings?Washesimplymore
随机试题
Soldiersandothermilitarypeoplewearuniformswithvariousothersymbolstoindicatetheirstatus.Butinthebusinessworld
听觉上最自然、最容易分辨的最小的语音单位是()
下列选项中属于显现的物质层组织文化的是()
正常肺部叩诊音为【】
至宝丹最适宜于哪种原因引起的窍闭神昏
平均寿命τ是指放射性原子核的平均生存时间。平均寿命与半衰期的关系为
动物严重大面积烧伤时可引起
(2007)比较勒·柯布西耶与赖特两人的城市规划理论,他们的共性是()。
用转账支票归还欠A公司货款50000元,会计人员编制的记账凭证为:借记“应收账款50000元”,贷记“银行存款50000元”,审核并已登记入账,该记账凭证()。
我国行政管理的权力结构的特征是()。
最新回复
(
0
)