1, 3, 7, 17, 41, ( )A.49 B.50 C.89 D.99 发布时间:2018-01-03 06:58 │ 来源:www.tikuol.com 题型:单项选择题 问题: 1, 3, 7, 17, 41, ( )A.49B.50C.89D.99