单项选择题
空白(2)处应选择()
A.10,6,18,8,4,2,12,20,16,30,28 B.6,2,10,4,8,12,28,30,20,16,18 C.2,4,6,8,10,12,16,18,20,28,30 D.6,10,8,28,20,18,2,4,12,30,16
单项选择题 空白(1)处应选择()