题目

将下列句子改为反意疑问句。   1. She is a school girl, __________?  2. It looks like rain, ____________?  3. They go there by bus, __________?  4. His mother goes to work at 8:00, __________?   5. The girl can sing an English song, __________?   6. The students had a class meeting yesterday, __________?   7. He forgot his umbrella, _____________?   8. There was a telephone for you, ___________?   9. Let’s clean our bedroom, ______________?   10. I think he is a teacher, ___________?下列说法错误的是（ ）A．分离液态空气法制氧气属于分解反应B．电解水生成氢气和氧气，说明水是由氢、氧两种元素组成的C．自然界的水多数是混合物，通过蒸馏可得到纯净物D．氢气燃烧生成水是化合反应，水电解生成氢气和氧气是分解反应