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我是氢，我最轻，火箭靠我运卫星；我是氦，我无赖，得失电子我最菜；我是锂，密度低，遇水遇酸把泡起；我是铍，耍赖皮，虽是金属难电离；我是硼，有点红，论起电子我很穷；我是碳，反应慢，既能成链又成环；我是氮，我阻燃，加氢可以合成氨；我是氧，不用想，离开我就憋得慌；我是氟，最恶毒，抢个电子...全文
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GSJCxj1998419： = =(2014-07-17 21:48)
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xcha600： = =，顶(2014-07-17 21:42)
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GSJCxj1998419：自顶！(2014-07-17 21:39)
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GSJCxj1998419：自顶= =(2014-07-17 21:30)
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