2021년, 어느 해보다도 뜻깊은 추억을 만들어 가는 멋진 6학년입니다.
물질이 연소시 필요한 것 |
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이름 | 박현진 | 등록일 | 21.10.05 | 조회수 | 6 |
첨부파일 |
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이전글 | 물질이 탈 때 나타나는 현상 |
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다음글 | 물질이 연소 후 생기는 것 |