把SO2通入Fe(NO3)3溶液中,溶液由棕色变为浅绿色,但立即又变为棕黄色,这时若滴入BaCl2溶液,会产生白色沉淀。在上述一系列变化过程中,最终被还原的是 A、NO3- B、SO2 C、Cl- D、Fe3+ 答案:【答案】A7. (2015江苏江阴长泾片期中,11) —She’s seldom asked to do housework at home,she? --.Her parents are very busy with their work,so she has to do some cleaning every day. A. has;Yes B. hasn’t;No C. is;Yes D. isn’t;No