题型:判断题 下列离子方程式中,正确的是( )A.向氯化亚铁溶液中通入氯气 Fe2++Cl2Fe3++2Cl-B.将氯气通入KI溶液中 Cl2+2I—==2Cl—+I2C.将氯气通入水中Cl2+H2OCl-+ClO-+2H+D.将锌粒投入稀硝酸中:Zn+2H+=Zn2++H2↑ 查看答案
题型:判断题 ---________ he still _________ in his office? ---No. He __________ back home. A.Is; working; wentB.Has; worked; is going C.Is; working; has goneD.Did; work; is going 查看答案