题目

下列离子方程式正确的是： A、等体积、等浓度的Ba(OH)2溶液与KAl(SO4)2溶液混合： 3Ba2＋＋6OH－＋2 Al3+＋3SO42-===3BaSO4↓＋2Al(OH)3↓ B、向NaAlO2溶液中通入过量CO2：  2AlO＋CO2＋3H2O===2Al(OH)3↓＋CO C、Fe3O4与稀硝酸反应的离子方程式为：   Fe3O4＋8H＋===Fe2＋＋2Fe3＋＋4H2O D、向NaOH溶液中加入金属铝：Al＋2OH-  ===  AlO＋2H2O根据上下文用适当的句子将对话补充完整。A: Hi, Peter!  What sport do you do every day?B:     1      A:  2   I play basketball, too.B: Do you have a basketball club in your school?A:   3     We go to the club every aftemoon.B: Do you play basketball well?A:    4    B:    5   A: Great!