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Scientists discovered that atoms of some substances are radioactive.
Scientists discovered that atoms of some substances are radioactive.
admin
2007-10-08
66
问题
Scientists discovered that atoms of some substances are radioactive.
选项
答案
科学家们发现某些物质的原子具有放射性。
解析
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本试题收录于：
英语题库普高专升本分类
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英语
普高专升本
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