题型:问答题 _____ a wet football can hurt your foot if you are not careful. [ ]A. Kicking B. Kicked C. Having kicked D. Kick 查看答案
题型:问答题 根据下图,判断下列说法中错误的是 [ ]A.石墨电极为正极,Ag电极为负极 B.负极电极反应式:Fe3+ + e-==Fe2+ C.盐桥中阴离子移向AgNO3溶液 D.总反应为:Fe3+ + Ag == Fe2+ + Ag+ 查看答案