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
2012-08-22
29
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 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 (肠道) "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 fit 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
细节题。文章最后一段谈到:一些食品厂商正往他们的产品中加入维生素A、D、E、K以及类胡萝卜素,但是即使他们做出这些努力,仍然有一些营养学家们担忧人们会摄入过多的用代脂肪制成的食品,从而摄入过多的热量。因此A为正确选项。
转载请注明原文地址:https://kaotiyun.com/show/mUXO777K
0
在职攻硕英语联考
相关试题推荐
Youcouldarguethatmanyartistshavebecomemore______happinessbecausemoderntimeshaveseensomuchmisery.
Asagoodphotographer,youmustdevelopanawarenessoftheworldaroundyouandthepeoplewho______it.
Adolescentsaretakinglongertobecomefullyproductivemembersofsociety,ReedLarson,professorofhumandevelopment,Univer
Adolescentsaretakinglongertobecomefullyproductivemembersofsociety,ReedLarson,professorofhumandevelopment,Univer
LatelyIgotachancetoreadPeoplemagazine’smostrecentcompilationof"The50MostBeautifulPeopleintheWorld."Itwas
Oilcanchangeasocietymore______thananyonecouldeverhaveimagined.
TheBritishpublicwasslowlyeasedintotheknowledgethatwhathadbeenseenasafairytalemarriagehasbeenAdeeplymiserabl
Asavolunteer,JohnApollosislosingweight—theold-fashionedway—byeatingless.Apolloshasloweredhisdailycalorieintake
JusthowmuchdoestheConstitutionprotectyourdigitaldata?TheSupremeCourtwillnowconsiderwhetherpolicecansearchthe
随机试题
A.肺炎链球菌肺炎B.支气管扩张C.肺炎克雷伯杆菌肺炎D.急性肺水肿咳粉红色稀薄泡沫痰提示
符合幼儿期特点的是()。
甲国A公司与乙国B公司签署了一份CIF合同,买卖了3台机车。某轮船公司的“美仑”号负责承运该合同项下的货物。关于双方的义务说法正确的是()。
《防洪法》规定,防洪规划应当服从()的综合规划。
处理抵债资产所得收入的分配顺序是什么?
A市B区治安联防队行使该区公安分局委托的治安管理权。某日,联防队员甲抓获了有行窃嫌疑的乙,因乙拒不说出自己的真实姓名,甲某用木棍将其殴打致伤,乙向法院提起诉讼请求国家赔偿。若乙的请求获得支持,依照《中华人民共和国国家赔偿法》的规定,则应由()承
中国音乐剧近些年确实很热闹,世界经典作品纷纷引进,原创音乐剧不时上演,中国排演外国名作的消息也不断传来,可以说,音乐剧这种艺术形式已经在中国生根,而且培育出了数量可观的固定观众。但是,当我们仔细回味中国音乐剧的现状后,不难发现,本土音乐剧的各类问题依旧存在
A、 B、 C、 D、 C第1列各图形都由一部分构成,第2列各图形都由两部分构成,第3列各图形都由3部分构成。
价值揭示的是
设随机变量X和Y相互独立,且X~N(0,1),Y~N(0,2),则E(X2+Y)=________。
最新回复
(
0
)