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谷类食物中的矿物元素______含量较低，通常以该类食物为主的人群，需要辅以牛奶和大豆类食物以补充。

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？？（1）Each child has his individual pattern of social, as well as physical, development. Some of it depends on his home life and his home life and his relationships with the people who love him.（2）Children in large families learn how to get along with others through normal brother-sister play and tussles（争斗）. An only child, on the other hand, may have to learn his lessons in social living through hard experiences on the playground or in the classroom.（3）Twins who always have one another to lean on may be slow in responding to others because they do not need anyone else.
（4）A child who is constantly scolded（责骂）and made to fell he does everything wrong may have a difficult time developing socially. He may be so afraid of displeasing the adults around him that he keeps to himself(where he can&39;t get into trouble),（5）or he may take the oppositeroute（道路）and go out of his way to create trouble. Like the is olated child, he too may return to infantile pleasures, developing habits that will satisfy him, but create barriers toward social contact.
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本票的基本当事人有出票人与款人。()

《美国生理学杂志》现分()个分册出版。