题目

Once there were two 61.________(mouse). They were friends. One mouse lived in the country; the other mouse lived in the city. After many years the Country mouse saw the City mouse; he said, Do come and see me at my house in the country. So the City mouse went. The City mouse said, This food is not good, and your house is not good. Why do you live in 62_____hole in the field? You should come and live in the city. You would live in a nice house 63______(make) of stone. You would have nice food 64_______(eat). You must come and see me at my house in the city, and can live with me The Cou氧化还原反应在生产、生活中具有广泛的用途、贯穿古今。（1）水是人体的重要组成部分，是人体中含量最多的一种物质。而“四种基本反应类型与氧化还原反应的关系”也可用右下图表达。试写出有水参加的符合反应类型Ⅳ的一个化学方程式：________________，其中水为________剂。（2）过氧化氢俗名双氧水，医疗上利用它有杀菌消毒作用来清洗伤口。关于双氧水，回答下列问题：①下列反应中，H2O2既体现氧化性又体现还原性的反应是（ ）A．Na2O2+2HCl═2NaCl+H2O2 B．Ag2O+H2O2═2Ag+O2↑+H2OC．2H2O2═2H2O +O2↑D．3H2O2+Cr2(SO4)3 +10KOH═2K2CrO4+3K2SO4+8H2O②保存过氧化氢的试剂瓶上最适合贴上的一个标签是（ ）（填序号）（3）焊接铜器时，可先用NH4Cl 除去其表面的氧化铜再进行焊接，该反应可表示为：4CuO + 2NH4Cl △ 3Cu + CuCl2 + N2↑+ 4H2O①用双线桥标明电子转移的方向和数目。②该反应中，被氧化的元素是 ，氧化剂是 。③还原剂与氧化产物的物质的量之比为 。④反应中若产生0.2 mol的氮气，则有 mol的电子转移。