单项选择题
A.[1,2] B.[1,2,3] C.[1,2,[3]] D.[]
A.[8] B.[8,9] C.8,9 D.8
A.[0,1,2] B.[3,6] C.[0,3,6] D.[0,3]
A.1,2,3 B.[1:2:3] C.1:2:3 D.[1,2,3]
微信扫一扫,加关注免费搜题