题目

下图表示治理汽车尾气所涉及反应的微观过程。下列说法不正确的是           【   】 A．图中单质的化学式为N2              B．该反应使有毒气体转化为无毒气体 C．反应物都属于氧化物                 D．反应前后原子、分子个数都不变 答案：D  3．听短文，填表格．听短文，根据短文内容在空格中填入恰当的单词（每空一词）．短文读三遍．A Visit to LondonTimeActivitiesMondayJenny and I arrived in London by（26）．Tuesday…I bought some（27）but Jenny didn't buy anything．WednesdayWe visited the British Museum and had（28）in a Chinese restaurant．（29）I did some shopping and Jenny listened to a concert in the（30）…SaturdayWe flew home．