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환경보호 매일 한 장, 5.09 참여 보상 3, 정답 3개 추가 보상

2016-05-09View Original

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이 게시글은 마지막으로 wamj6566에 의해 2016-5-9 00:17에 수정되었습니다. 단일 선택 문제: 만약 어떤 지역의 ( ) 성분의 분포가 비정상적이라면, 그로 인해 지역성 갑상선종이나 크레틴병이 발생할 수 있습니다.A. 철, B. 셀레늄, C. 요오드, D. 칼슘, C
Reply #22016-05-09
C、、、、、、、、、、、、、、、

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