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
52
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、From meat.
B、From milk.
C、From eggs.
D、From sunshine.
答案
D
解析
短文一开始就提到了the easiest way to get vitamin D,即“从阳光中获取维生素D”。故选D。
转载请注明原文地址:https://tihaiku.com/zcyy/2927724.html
相关试题推荐
[originaltext]Ifyou’recarefulenough,you’llfindthatitiscommonnowad
[originaltext]Ifyou’recarefulenough,you’llfindthatitiscommonnowad
[originaltext]InBritainthebiggestnumberofworkingforeignerscomesfro
[originaltext]InBritainthebiggestnumberofworkingforeignerscomesfro
[originaltext]InBritainthebiggestnumberofworkingforeignerscomesfro
[originaltext]Peter:(19)ThelawontaxisisveryinterestingandIknowinLon
[originaltext]OneofNewYork’smostbeautifulandvaluablebuildingsisin
[originaltext]Ababyspendsthefirstyearoflifelearningtolisten.(9)A
[originaltext]W:Hi,Scott,haveyouheardaboutDianarecently?M:No,Ihave
[originaltext]W:Hi,Scott,haveyouheardaboutDianarecently?M:No,Ihave
随机试题
Buyinginsurancethroughyourbusinesscanbe(cheap)______thanbuyinganindiv
SmalldogsgenerallylivelongerthanbigdogssothatsmallYorkshireterri
美国经济发展经历了“古典自由主义”“国家干预的自由主义”和“新自由主义”三个阶段
Whichofthefollowingactivitieswould
下列关于实施上市公司管理层收购的说法中,正确的有()。 Ⅰ.上市公司员工对本
下列哪项是临终患者最早出现的心理反应期A.忧郁期 B.愤怒期 C.否认期
把下面的六个图形分为两类,使每一类图形都有各自的共同特征或规律,分类正确的一项是
张法官与所承办案件当事人的代理律师系某业务培训班同学,偶有来往,为此张法官向院长
某金店为增值税一般纳税人,2020年9月采取“以旧换新”方式销售纯金项链1条,新
属于公路工程常用的流水时间参数是()。A.施工过程数 B.工作面 C.
最新回复
(
0
)