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
2023-08-15
32
管理
问题
Vitamin D helps bones and muscles grow strong and healthy.
[9]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.
[10]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. [11]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/2927726.html
相关试题推荐
[originaltext]Ifyou’recarefulenough,you’llfindthatitiscommonnowad
[originaltext]Ifyou’recarefulenough,you’llfindthatitiscommonnowad
[originaltext]Ifyou’recarefulenough,you’llfindthatitiscommonnowad
[originaltext]Peter:(19)ThelawontaxisisveryinterestingandIknowinLon
[originaltext]OneofNewYork’smostbeautifulandvaluablebuildingsisin
[originaltext]Ababyspendsthefirstyearoflifelearningtolisten.(9)A
[originaltext]Ababyspendsthefirstyearoflifelearningtolisten.(9)A
[originaltext]Ababyspendsthefirstyearoflifelearningtolisten.(9)A
[originaltext]W:Hi,Scott,haveyouheardaboutDianarecently?M:No,Ihave
[originaltext]W:Hi,Scott,haveyouheardaboutDianarecently?M:No,Ihave
随机试题
【B1】[br]【B6】[audioFiles]audio_eufm_j51_007(20082)[/audioFiles]financial
Asoccerrefereesuspended(吊销执照)forscoringagoalwhiletakingchargeof
[originaltext]MrWilliams:Goodmorning,Mr.Pitt.Dositdown.MrPitt:Thank
纸币是国家(或某些地区)发行的强制使用的货币符号。纸币的发行量必须()。A.
关于肝炎病毒,下列说法错误的是A.HAV经粪-口途径传播B.HBsAg为乙型肝炎
Thechangeinthatvillagewasmiraculou
招标师的职业义务主要有()。A.自主选择从业单位B.从事招标采购业务 C.
下列关于行政复议被申请人的说法中,正确的是( )。A.公民、法人或者其他组织对法
甲卷烟厂为增值税一般纳税人,主要生产销售A牌卷烟,2020年1月发生如下经营业务
关于桥梁上部结构顶推法施工特点,下列说法正确的是()。A.减少高空作业,无须大
最新回复
(
0
)