题目

随着我国经济的飞速发展，居民家用小汽车拥有量大幅攀升，汽车尾气带来的空气污染不容忽视。汽车尾气中，两种污染物能在催化剂作用下转化为无害物质，这两种污染物是（    ）A、CO2和NO     B、CO和NO    C、CO2和O2        D、碳氢化合物和O3  答案：B解析: 根据句意及汉语提示写单词,完成句子。1. What's your sister's favorite _____(学科)?  2. Some girls think math is very _____(困难的).  3. Mr Miller is our P.E. _____(教师).  4. These kids love to _____(听)to Mrs Brown.  5. What time do your parents _____(通常)get up?  6. Mikc ofren does his _____(家庭作业)at seven-ten in the evening.  7. What's Jeff's e-mail _____(地址)?  8. Why do you want to _____(加入)the art club?  9. Can your uncle play _____(国际象棋)?  10. He wants to be a great _____(演员).