单项选择题
Of the following carbonates, the one which is most easily decomposed into oxide is ( )
单项选择题 若事件A与B互斥，则A与B一定相互独立 A、正确 B、错误
未知题型 To be inspired by other people's creativity，children should______.A.write ideasB.make up storiesC.buy good notebooksD.visit museums，libraries，and science centers
判断题 多边形与线要素叠加后，新生成的多边形将继承线要素的属性信息 正确 错误
