题目

有如下VB程序段:Dim a(I To 10)As IntegerDim s(1 To 10)As IntegerPrivate Sub Form_Load()  a(1)=3:a(2)=6:a(3)=8:a(4)=4:a(5)= 9  a(6)=5:a(7)=3:a(8)=3:a(9)=8:a(10)= 6End SubPrivate Sub Command1_Click()  Dim max As Integer,i As Integer,j As Integer, k As Integer  max=0  For i=1 To 10    k=0    For j=10 Toi Step -1        If a(j)=a(i)Then k=j:Exit For    Next j    If k > 0 And k- i > max Then max=k-i  Next i  Text1.Text=Str(max)End Sub程序运行后,文本框Text1显示的内容是 (  ) A . 5 B . 6 C . 7 D . 8 答案:D
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