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
2024-06-10
40
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. Critics, however, say the new compound can rob the body of essential vitamins and nutrients (营养物) 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 fatting 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 broke down. Manufacturers say it’s the ability to slide unchanged through the intestines that makes olestra so valuable as a fat substitute. It provides consumers with the taste of regular at 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] What is a possible negative effect of olestra according to some critics?
选项
A、It may impair the digestive system.
B、It may affect the overall fat intake
C、It may increase the risk of cancer.
D、It may spoil the consumer’s appetite.
答案
C
解析
它妨碍类胡萝C、素的吸收,而类胡萝卜素又能减少癌症的危害。可见,这种物质当然会增加癌症的发病率。
转载请注明原文地址:https://tihaiku.com/zcyy/3628235.html
相关试题推荐
Imagineeatingeverythingdeliciousyouwant—withnoneofthefat.Thatwoul
Imagineeatingeverythingdeliciousyouwant—withnoneofthefat.Thatwoul
Imagineeatingeverythingdeliciousyouwant—withnoneofthefat.Thatwoul
Hetalksasif__________________________.(对于这家企业他什么都懂)hekneweverythingabo
Inthenameof"zerotolerance,"ourschoolsaretreatinginnocentchildren
Inthenameof"zerotolerance,"ourschoolsaretreatinginnocentchildren
[originaltext]W:Why,Peter!Youaresweatingheavily.Wherehaveyoubeen?M:
[originaltext]W:Why,Peter!Youaresweatingheavily.Wherehaveyoubeen?M:
Imaginethis:youaresittinginyourcarwhilewatchingamovie,youcanch
Imaginethis:youaresittinginyourcarwhilewatchingamovie,youcanch
随机试题
Inthisbroadcast,whatshallwestudy?Weshallstudythe______ofmusic.[or
扑救A类火灾不能使用()灭火器。A.水基型水雾灭火器 B.水基型泡沫灭火
甲企业拟购买乙企业的著名服装商标使用权。使用期限为8年,双方约定,由甲企业每年按
材料:“达尔文自然选择学说”的教学片段 (1)教师首先在黑板上粘贴一幅手绘鱼的
小儿,3岁,不慎食用喷洒有机磷农药的植物,出现大汗淋漓,流涎,四肢抖动,初步诊断
投资债券所获现金流量再投资的利息收入,受市场收益率变化的影响。( )
商业银行战略风险管理的最有效方法是以风险为导向的战略规划和实施方案。在以风险为导
甲公司于2×18年12月31日购入一台管理用设备,取得成本为2000万
评价蛋白质营养价值高低的主要指标是( )。A.氨基酸模式及蛋白质的消化吸收
关于项目结构分解的说法,正确的有()。A.项目结构图通过树状图的方式对一个项目
最新回复
(
0
)