9.有如下VB程序段:
sl = "1324":s2="abcdefgh"
j = 1:m=0:c=" "
For i= 1 To Len (s2)
k =Val(Mid(sl, j, 1))
c= c +Mid(s2,m +k,1)
j=j+1
If j>4 Then j= 1:m =m+ 4
Next i
执行该程序段后,变量c的值是( )
(A) "acbdegth"
(B)"acbdacbd"
(C) "acbdefgh"
(D)"abcdefgh"
参考答案
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