题目

单词拼写 1. The little girl will travel____________ (在国外)to learn more about art. 2. ---Do you know Hong Kong? ---Yes，it ___________ (回归)to China in 1997. 3. There will be a __________ (魔术) show at the gate of the shopping mall. 4. How to protect the ________________（环境）has been under discussion. 5. We should encourage ______________ not to dump waste again. Let’s write a letter to them.（工厂）6．以下实验能获得成功的是（　　）A．用溴水鉴别苯和甲苯B．用酸性高锰酸钾溶液区分苯和已烷C．将铁屑、溴水、苯混合制溴苯D．用苯乙烯在合适条件下催化加氢制备乙基环已烷