How many vitamins must be derived from nourishment?
A. 5
B. 7
C. 8
D. 13
. C
Có bao nhiêu loại vitamin có thể lấy được từ thực phẩm?
Dẫn chứng: Among the 13 vitamins known today, five are produced in the body.
[ Trong số 13 loại vitamin được biết, có 5 loại có sẵn trong cơ thể. ]
13 – 5 = 8
=> Chọn C
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