Vitaminsare smallish molecules (Vitamin B12 is the largest, with a molecular weight of 1,355) that your body needs to keep itself running properly. InHow Sunburns and Sun Tans Work, we learn that the body can produce its own Vitamin D, but generally vitamins must be provided in food. ...
Vitamin D deficiency can lead to serious bone diseases. So in the United States it is added to milk, a staple food in most people’s diet. Vitamin D is sometimes called the sunshine vitamin. That’s because the body requires sunlight in order to make use of it. Here’s how it works...
A.How; that B.That; which C.That; which D.What; that扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 A 考查名词性从句和定语从句。从句How medicine works in a human body在句中做主语。定语从句That not everyone can understand fully修饰先行词question,that指代question在句中...
搜索智能精选题目 ___ medicine works in a human body is a question ___ not everyone can understand fully. A.How; that B.That; which C.That; which D.What; that 答案 A
The human body requires a number of vitamins and minerals to function properly. Examples include vitamin A, which is required by the retina in the eye, vitamin D which is required for maintaining healthy bones, and vitamin E which helps form red blood cells. ...
How is vitamin D produced in our body? (No more than 11 words) ……【查看更多】 题目列表(包括答案和解析) SEE a cell phone cover that you like on Taobao? Forget about placing an order, paying the bill online and waiting for days for it to be delivered to you. In the near future,...
[题目] medicine works in a human body is a question not everyone can understand fully.A. How; that B. That; which C. What; which D. What; that
On a smartphone, a live feed cycled through views of heart valves fluttering, muscles flexing, the diaphragm’s rise and fall and the flow of blood through arteries. Seamlessly connected to these hidden layers of physiology, the runner was able to watch the workings of their body in real ...
the importanee of rest.That is"A.Sports and HealthB.Everybody Must Do Sports(c)C.Sports Are Nothing to PeopleNo.5 High School:Aetivity SurveyD.No One Likes SportsActivityEvery day Onee a weekThree or four tinses a week(B)Do homework95魔0峰5经Many students get ill easily in autumn....
之所以叫How It Works《万物》,是为了给孩子揭秘万物背后运转的科学秘密,激发他们对科学、对工程的热爱,非常适合10岁以上的孩子和所有对世界充满好奇心的大人! How It Works创刊于2009年,短短10余年,就已风靡全球,在15个国家和地区出版发行,仅...