题目

选择合适的选项补全对话。A. Let's go.B. Are these your shoes?C. Let's play football.D. They are on your feet．E. What are they?A：It's warm today．B：Great!A：Where are my shoes?B：A：No．they aren't．B：A：Look!B：Oh．I'm sorry． 答案：【1】C【2】A【3】B【4】E【5】D下列情况：①煤的燃烧；②工业废气的排放；③燃放鞭炮；④用汽油为燃料的汽车尾气的排放；⑤用氢气为燃料的新型燃气车排放的尾气．会引起空气污染的是（ ）A．①④⑤B．①②③C．①②③④D．①②③④⑤