（单选题）
人乳( )
A蛋白含量较高，且以酪蛋白为主
B蛋白凝块细而软，叶酸含量很少
C以牛乳为基础改造，使其宏量营养素成分尽量“接近”于人乳
D婴儿最好的天然食物
E蛋白和脂肪含量少，能量也低
正确答案
答案解析
略
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