人类

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Age: 9
Level: 三年级
Language: Chinese (zh)
ID: 1279901
18/08/2021
Country code: MY
Country: Malaysia
School subject: 科学 (1061731)
Main content: 保护牙齿的方法 (1477658)

answer all the question.

Other contents: 牙齿治疗技术

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人类
人类

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