水是生活中常见的物质之一,请按下列要求各写出一个有水参加或有水生成的反应。用化学方程式表示: (1)化合反应____________________;(2)分解反应____________________; (3)复分解反应____________________。 答案:(1)2H2+O22H2O (2)2H2O2H2↑+O2↑ (3)CaCO3+2HCl=CaCl2+2H2O+CO2↑ HCl+NaOH=NaCl+H2O I prefer musicians write their own lyrics.A. what B. which C. who D. whom