首页
登录
职称英语
Imagine eating everything delicious you want with none of the fat. That woul
Imagine eating everything delicious you want with none of the fat. That woul
游客
2025-04-14
48
管理
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 that the new compound can rob the body of essential vitamins and nutrients and can also cause unpleasant side effects in some people. So it is 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 "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, 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. [br] Olestra is different from ordinary fats in that______.
选项
A、it passes through the intestines without being absorbed
B、it facilitates the absorption of vitamins by the body
C、it helps reduce the incidence of heart disease
D、it prevents excessive intake of vitamins
答案
A
解析
细节事实题。又根据原文第四段尾句可知,regular fat只含有three molecules脂肪酸。根据第六段首句中的too large for the intestines to absorb,与选项A对应。故答案为A。
转载请注明原文地址:http://tihaiku.com/zcyy/4037248.html
相关试题推荐
YoucannotimaginehowIfeel______withmydutiessometimes.(中国矿业大学2008年试题)A、ove
Imagineaworldinwhichtherewassuddenlynoemotion—aworldinwhichhu
Imagineaworldinwhichtherewassuddenlynoemotion—aworldinwhichhu
______humanbehaviormaybecausedbyeatingsubstancesthatupsetthedelicate
Inthecaseofmobilephones,changeiseverything.Recentresearchindicate
Inthecaseofmobilephones,changeiseverything.Recentresearchindicate
Inthecaseofmobilephones,changeiseverything.Recentresearchindicate
Inthecaseofmobilephones,changeiseverything.Recentresearchindicate
Accordingtothelawwhichhelaterproduced,everythingintheuniverseattract
Aschildrenwestart【C1】______anaturalcuriosityabouteverythingaroundus
随机试题
Whocantakepartineachoftheclasses?WritethecorrectletterA,BorCnex
TheancientAztecsveneratedthecacaotreeanduseditsbeansasaformof
OurproductsaredisplayedinStandB22,______youwillfindmeduringofficeh
没有哪个国家比中国对汽车更痴狂了,这里新成为中产阶层的人们的梦想就是拥有一辆闪闪发光的(shiny)新汽车。但仅仅有汽车对这些渴望超越中产阶层的人们是不
复合树脂充填,不宜用氧化锌丁香油糊剂垫底是因为A.影响树脂与牙粘接 B.抗压强
治疗咳嗽痰稠,鼻咽干燥,属燥热伤肺者,宜选用A、升麻 B、蔓荆子 C、薄荷
茶碱类药物需监测血药浓度的原因是A.易产生副作用B.在给常规剂量情况下,血药浓度
可引起明显干咳不良反应的药物是A.ace抑制剂 B.硝酸盐类 C.β受体阻滞
组合电器送电前必须(____)合格,各项(____)项目合格,各项(____)满
下列关于账户及其基本结构的表述中,不正确的是()。A:账户是根据会计科目设置的,
最新回复
(
0
)