首页
登录
职称英语
[originaltext] Vitamin D helps bones and muscles grow strong and healthy.
[originaltext] Vitamin D helps bones and muscles grow strong and healthy.
游客
2024-03-13
9
管理
问题
Vitamin D helps bones and muscles grow strong and healthy.
The easiest way to get vitamin D is from sunlight. The ultraviolet rays react with skin cells to produce the vitamin. But many people worry about skin cancer and skin damage from the sun.
Also, darker skinned people produce less vitamin D than lighter skinned people. Production also decreases in older people and those living in northern areas that get less sunlight.
Not many foods naturally contain vitamin D. Foods with high levels include oily fish such as salmon, tuna and mackerel, and fish liver oils. Boston University researchers reported last year that farmed salmon had a lot less vitamin D than wild salmon.
Small amounts of D are found in beef liver, cheese and egg. And some people take dietary supplements containing the vitamin. But most of the D in the American diet comes from foods like milk with the vitamin added.
These days, more doctors are testing for vitamin D levels in their patients. But as research continues, some experts worry that if people take too much D, it might act as a poison. Also, skin doctors warn people to be careful with sun exposure.
How much vitamin D does a healthy person need? Nutrition experts who advise the American government set the current recommendations in 1997. The daily amount is two hundred international units from birth through age 50. Then it rises to four hundred international units through age seventy,[12]and six hundred for those seventy-one and older. But some groups say these amounts are not high enough.
9 According to the speaker, what is the easiest way to get Vitamin D?
10 According to the speaker, who produces the most Vitamin D?
11 What do some experts worry about?
12 How much Vitamin D does an 80-year-old person need every day?
选项
A、Taking excessive Vitamin D is harmful to health.
B、Many people don’t know the importance of Vitamin D.
C、Older people are more likely to lack Vitamin D.
D、More and more people suffer from skin caner.
答案
A
解析
短文提到专家们担心:“摄入过多的维生素D有可能还会有害”。A是原文同义再现,正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3530677.html
相关试题推荐
[originaltext]Hello,everybody.WhatIwanttotalkabouttodayisanidea
[originaltext]Hello,everybody.WhatIwanttotalkabouttodayisanidea
[originaltext]Hello,everybody.WhatIwanttotalkabouttodayisanidea
[originaltext]Goodafternoon,everyone.Ican’ttellyouhowhonoredIamt
[originaltext]Goodafternoon,everyone.Ican’ttellyouhowhonoredIamt
[originaltext]Goodafternoon,everyone.Ican’ttellyouhowhonoredIamt
[originaltext]Goodevening.YouarelisteningtoPopWorldofBCDInternati
[originaltext]VitaminDhelpsbonesandmusclesgrowstrongandhealthy.
[originaltext]VitaminDhelpsbonesandmusclesgrowstrongandhealthy.
[originaltext]VitaminDhelpsbonesandmusclesgrowstrongandhealthy.
随机试题
细菌感染病人的NBT试验阳性百分率表现为A.10% B.8% C.明显升高
确定地面点位相对位置的三个基本观测量是水平距离和( )。A.水平角和方位角
共用题干 CaribbeanIslandsWhatwouldyouse
解除尿潴留的措施中,以下哪项描述是错误的A、嘱病人坐起排尿 B、让其听流水声
近来西方舆论界存在一种观点认为中国经济高速发展,除污染了地球环境外,还成了国际上
A.2.4 B.6.6 C.0.42 D.1.7
通常人们认为绩效考评的偏误和误差的主要原因不包括()A:考评标准缺乏客观性和准确
A.1001111 B.0110000 C.10110111 D.1000
下列有关组成部分重要性的说法中,错误的是()。A.组成部分重要性的汇总数可以高于
以下情形中,可以参加执业医师资格考试的是 A.有医学专业中专以上学历,在医疗机
最新回复
(
0
)