单项选择题
A. 1,2,3,4,5,6,7,8,9,10, B. 1,2,6,8,10,12,7,8,9,10 C. 1,2,3,4,10,12,14,16,9,10, D. 1,2,6,8,10,12,14,16,9,10,
A. 2 B. 3 C. 43 D. 44
A. 错误信息 B. 666 C. 888 D. 666,888