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document.write("生物柴油的研究与使用");
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document.write("既然全球变暖 为何今冬还这么冷？");
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document.write("从燃煤电厂捕集CO2的低成本新材料");
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document.write("科学家开发转化CO2的高能效方法");
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document.write("苯：隐藏在家中的“敌人”");
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document.write("钢渣、高炉渣");
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document.write("硫铁矿渣");
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