试题 试卷
题型:单选题 题类:常考题 难易度:普通
实数++++++++++++
﹣7,0.32, ,0, , , ,π,0.1010010001…
①有理数集合{ …}
②无理数集合{ …}
③负实数集合{ …}.
﹣4,0, , ,2015,0.010010001…(相邻两个1之间依次增加一个0),﹣2.333…,20%.
试题篮