首页
登录
职称英语
Imagine eating everything delicious you want—with none of the fat That would
Imagine eating everything delicious you want—with none of the fat That would
游客
2023-08-11
38
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 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 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(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. [br] 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
文章最后一段第2句提到“一些营养学家担心这样一来,人们也许会不加限制地享用由代脂肪制成的食品,从而摄取更多的热量”,A与文中所陈述的观点一致;其他三项在文中均没有进行陈述。
转载请注明原文地址:https://tihaiku.com/zcyy/2917755.html
相关试题推荐
[originaltext]Whydowecry?Canyouimaginelifewithouttears?Notonlydo
[originaltext]Whydowecry?Canyouimaginelifewithouttears?Notonlydo
[originaltext]Whydowecry?Canyouimaginelifewithouttears?Notonlydo
[originaltext]M:Hi,Mandy.How’severythinggoing?W:Nottoogood,Isuppose.
[originaltext]Inthecaseofmobilephones,changeiseverything.Recentre
[originaltext]Inthecaseofmobilephones,changeiseverything.Recentre
Imagineeatingeverythingdeliciousyouwant—withnoneofthefatthatwould
Imagineeatingeverythingdeliciousyouwant—withnoneofthefatthatwould
Imagineeatingeverythingdeliciousyouwant—withnoneofthefatthatwould
DietingadvisorDr.RobertAtkinsrecommendseatingadiethighinproteinf
随机试题
ForcenturiesDutchengineershavebeenfightingawaragainstwater.Their
[originaltext]Atleast11peoplediedyesterdaywhenatrainstruckabuson
PassageThree(1)Themoreresponsibilityyoutakeonatworkandinli
A)Reduce,reuse,andrecycle.RecyclinghasbecomeapartofAmericanlife.It
下列雌、孕激素的周期变化哪项是正确的A.雌激素在周期中有一个高峰 B.孕激素在
关于肺炎链球菌肺炎,下列哪项错误A.可表现为大叶性肺炎 B.一般不引起肺组织坏
以个人对任务的充分理解的前提的规律是()。A.任务促成的纪律 B.集体促成的纪
基础心理学是研究()。 (A)正常成人心理现象的心理学基础学科 (B
年轻恒牙患龋率最高的牙齿是A.上前牙 B.下颌双尖牙 C.尖牙 D.第一恒
细支气管不完全阻塞所致的阻塞性通气障碍可造成A.肺不张 B.肺纤维化 C.支
最新回复
(
0
)