单项选择题
A. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, B. 1, 2, 7, 6, 3, 4, 5, 8, 9, 10, C. 1, 2, 7, 6, 5, 4, 3, 8, 9, 10, D. 1, 2, 9, 8, 7, 6, 5, 4, 3, 10,
A. 1234 B. 2344 C. 4332 D. 1123
A. 049382716 B. 05948372615 C. 5678901234 D. 0987651234