It is our present national spirit background color of childrens literature to explore the secrets of teenagers growth and to show their self growing experience.
探索年少一代身心成长秘密，表现孩子对其成长的自我体验，是我国当下儿童文学的精神底色。
The results show that after supplement selenium the rate of respiratory infection is lower and the childrens health level is better.
结果表明，补硒后呼吸道感染率明显降低，儿童的健康水平明显提高。
The results show that after supplement selenium the rate of respiratory infection is lower and the childrens health level is better.
结果表明，补硒后呼吸道感染率明显降低，儿童的健康水平明显提高。
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