问题详情

The reasons for vitamin supplements include all the following EXCEPT that
A．foods from the soil are lack of vitamins nowadays
B．processed foods tend to lose vitamins in making process
C．unbalanced food can"t keep children in good shape
D．some elements of vitamin can never been obtained from natural foods此题为多项选择题。请帮忙给出正确答案和分析，谢谢！