单项选择题
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个月至2岁 D.3~6岁 E.6~12岁
A.10天 B.1个月 C.2~3个月 D.4~5个月 E.6~7个月