题目

有如下VB程序段: For i = 1 To 8     a(i) = Int(Rnd * 10) * 2 + 1 Next i For i = 1 To 3     For j = 1 To 8 - i * 2         If a(j) > a(j + 2) Then             t = a(j): a(j) = a(j + 2): a(j + 2) = t         End If     Next j Next i 执行该程序段后,在下列选项中,a(1)~a(8)各元素可能的值是(    ) A . 3,1,8,7,11,13,17,15 B . 3,1,5,7,9,13,15,21 C . 5,3,5,7,9,17,15,19 D . 17,1,13,7,9,13,7,15 答案:C
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