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【单选题】
幼儿译泽, 13 个月,出生后一直人工喂养牛奶, 3 个月后开始只添加辅食鸡蛋,发现该婴儿生长迟缓、面色苍白,最可能缺乏的营养素是()A.
钙
B.
铁
C.
锌
D.
蛋白质
E.
E 维生素缺乏
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A.
left
B.
had left
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had forgotten
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A.
left
B.
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C.
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