Vitamin B12is not found in plant foods. The main sources in the human diet are animal products such as milk, eggs, and liver. Probably the ultimate source of B12is bacterial production in animal intestines. This production occurs in humans, and in normal persons probably meets some or perhaps...
include the type of chemical called an amine. Today we know that vitamins help keep our bodies strong and healthy, in addition to preventing a variety of illnesses. But because our bodies cannot produce these compounds, we must get them in the foods we eat as part of a well-balanced diet...
If foods contain added vitamins, asyou suggest in your article, then B12 deficiency and diseases associated with it should be left to the past.32. What kind of the passage is it?2、[解析]Why is the author interested in the reports in the Saturday Evening Post?3、[解析]What did the ...