According to the passage, vitamins are
D
Theo bài đọc, vitamin là
A. thành phần của thức ăn
B. chất dinh dưỡng cần thiết
C. những hợp chất
D. nhóm thực phẩm lớn
Dẫn chứng: Vitamins, taken in tiny doses, are a major group of organic compounds that regulate the mechanisms by which the body converts food into energy.
=> Chọn D
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