金属X放入CuSO4溶液中有红色物质析出、放入ZnSO4溶液中无现象.则三种金属活动性由强到弱排列的是( ) A.Zn、X、Cu B.Cu、X、Zn C.Zn、Cu、X D.X、Zn、Cu 答案:【考点】金属活动性顺序及其应用. 【专题】金属与金属材料. 【分析】在金属活动性顺序中,位于前面的金属能把排在它后面的金属从其盐溶液中置换出来,据此判断能否发生反应,进而可确定三种金属活动性由强到弱的顺序. 【解答】解;金属X放入CuSO4溶液中有红色物质析出,说明说明X的金属活【小题1】What can I do for you? (改为同义句) I you?【小题2】It’s eleven o’clock. (对划线部分提问) is it?【小题3】I usually have a party on my birthday. (对划线部分提问) do you usually on your birthday?【小题4】interesting, they, is, think, Beijing Opera, very (连词成句) 【小题5】We like action movies and thrillers. (对划线部分提问)What movies do you like?