第15题: [单项选择]What is the main idea of the passage A. An Energy-saving way to recycle bottles into drinking glasses. B. How to make drinking glasses. C. Recycling gives used bottles a new life. D. Green Glass received worldwide patent rights. 参考答案:A 答案解析:[分析] 本题考查对全文的理解。B,D均不能概括全文;C太抽象;A则概括出文章的主要内容。