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
2024-04-03
5
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] What is a possible negative effect of olestra according to some critics?
选项
A、It may increase the risk of cancer.
B、It may spoil the consumers’ appetite.
C、It may impair the digestive system.
D、It may affect the overall fat intake.
答案
A
解析
第6段第5句提到“一些批评家认为Olestra阻止人体吸收维生素A、D、E、K和类胡萝卜素,而类胡萝卜素却是一种能减少癌症及心脏病发病率的化合物”,因此,A正确;B与文章所陈述之意相悖;C和D文中没有提及。
转载请注明原文地址:https://tihaiku.com/zcyy/3539651.html
相关试题推荐
DietingadvisorDr.RobertAtkinsrecommendseatingadiethighinproteinf
DietingadvisorDr.RobertAtkinsrecommendseatingadiethighinproteinf
DietingadvisorDr.RobertAtkinsrecommendseatingadiethighinproteinf
DietingadvisorDr.RobertAtkinsrecommendseatingadiethighinproteinf
DietingadvisorDr.RobertAtkinsrecommendseatingadiethighinproteinf
Imagineeatingeverythingdeliciousyouwant—withnoneofthefatThatwould
Imagineeatingeverythingdeliciousyouwant—withnoneofthefatThatwould
Imagineeatingeverythingdeliciousyouwant—withnoneofthefatThatwould
Imagineeatingeverythingdeliciousyouwant—withnoneofthefatThatwould
ImaginethattheSpanish-speakingworldwasasinglecountrywhichiscalled
随机试题
Improvingthebalancebetweentheworkingpartofthedayandtherestofit
After21yearsofmarriage,mywifewantedmetotakeanotherwomanouttod
A.复制 B.转录 C.翻译 D.转录或翻译 E.转录或复制主要发生在细
流水施工的表达方式有( )。 A、网络图、横道图和时标图 B、网络图、垂
急诊室负责预检分诊的某护士突然接诊10余位患者,这些患者均有恶心、呕吐、腹痛、腹
A.9 B.7 C.5 D.3
成本预算是在进行了成本预测,实现了成本降低指标()的基础上编制的。A:日常会计核
某公司发行某种债券,该债券面额为100元,发行价格为97元,这种发行方式属于(
智能手机属于通信设备中的()。A.终端设备 B.传输设备 C.交换设备 D
由于该式为σ的三次方程,求解较繁,现均由程序计算。 电线最大允许使用应力σ
最新回复
(
0
)