题目

     more energy to my study instead of being crazy about Internet games, I would be sitting in a comfortable office now．      A．If I devoted          B．Had I devoted        C．Would I be devoted    D．Should I be devoted 答案：B下列反应的离子方程式书写正确的是（　　） A、用银氨溶液检验乙醛中的醛基：CH3CHO+2Ag（NH3）2++2OH- 热水浴CH3COO-+NH4++3NH3+2Ag↓+H2OB、用二氧化硫水溶液吸收溴蒸气：SO2+Br2+2H2O=2H++SO42-+2HBrC、在（NH4）2SO4溶液中逐滴加入少量的Ba（OH）2溶液：NH4++SO42-+Ba2++OH-=BaSO4↓+NH3?H2OD、次氯酸钙溶液中通入少量SO2气体：Ba2++2ClO-+SO2+H2O=CaSO3↓+2HClO