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
2023-08-16
24
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/2931579.html
相关试题推荐
Imagineeatingeverythingdeliciousyouwant—withnoneofthefatThatwould
DietingadvisorDr.RobertAtkinsrecommendseatingadiethighinproteinf
DietingadvisorDr.RobertAtkinsrecommendseatingadiethighinproteinf
DietingadvisorDr.RobertAtkinsrecommendseatingadiethighinproteinf
DietingadvisorDr.RobertAtkinsrecommendseatingadiethighinproteinf
DietingadvisorDr.RobertAtkinsrecommendseatingadiethighinproteinf
[originaltext]Imagineanightskysofullofbrilliantstarsthatyoucana
[originaltext]Imagineanightskysofullofbrilliantstarsthatyoucana
[originaltext]Imagineanightskysofullofbrilliantstarsthatyoucana
[originaltext]Imagineanightskysofullofbrilliantstarsthatyoucana
随机试题
【S1】[br]【S10】Like→Unlike逻辑关系错误。文章的前文已经提到19世纪的人们认为海洋资源是取之不尽的,最后一句的now与nineteen
记忆memorization
【B1】[br]【B4】A、constantB、quietC、calmD、noisyAconstants“恒定的,不变的”;quiet“安静的”;c
ThehotelTerrystayedatcanbedescribedas______.[br][originaltext]Present
JusticeisoneofthemostpopularcoursesinHarvard’shistory.Nearlyone
平行于x轴且经过点(4,0,-2)和点(2,1,1)的平面方程是( )。
The()processanalyzestheeffectofrisk
马钱子成人的一日常用量按照2010年版《中华人民共和国药典》是A:0.1~0.5
根据已知图形,选择下一个图形。 AA BB CC DD
董事会的形式包括定期会议和()。A.特别会议 B.临时会议 C
最新回复
(
0
)