单项选择题
A.黄豆 B.蚕豆 C.蛋黄 D.木耳 E.动物肝脏
A.90g/L B.100g/L C.110g/L D.120g/L E.130g/L
A.2~3个月 B.4~6个月 C.6个月~2岁 D.3~6岁 E.6~12岁
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