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【题目】普通玻璃的主要成分是:Na2SiO3CaCO3CaSiO3SiO2Na2CO3CaO(

A.①③⑥ B.②③④ C.①③④ D.③④⑤

【答案】C

【解析】制玻璃的原料是纯碱、石灰石和石英,在高温下反应获得玻璃,玻璃的主要成分是硅酸钙、硅酸钠和二氧化硅的混合物,答案选C。

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