单项选择题
A. 错误信息 B. 666 C. 888 D. 666, 888
A. 7 B. 8 C. 9 D. 10
A. 1,2,3,4,5,6,7,8,9,0, B. 2,3,4,5,6,7,8,9,10,1, C. 0,1,2,3,4,5,6,7,8,9, D. 1,1,1,1,1,1,1,1,1,1,