题目

下列表示对应化学反应的离子方程式正确的是( )。 A.NO2通入水中:3NO2+H2O   ===   2H++2NO+NO B.用两个铜电极电解CuSO4溶液:2Cu2++2H2O2Cu+O2↑+4H+ C.SO2通入FeCl3溶液中:SO2+Fe3++2H2O=== SO+Fe2++4H+ D.过量的CO2通入NaAlO2溶液中:2AlO+CO2+3H2O=== 2Al(OH)3↓+CO 答案:While these different customs might seem strange to you,remember:     you consider normal probably seems equally strange to others. A.that              B.what             C.which             D.when
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