Key = Int(Rnd*10)*2+1
s = ""
i = 1: j = 10
Do While i <= j
m = (i + j) \ 2
s = s + Str(a(m))
If a(m) > Key Then j = m - 1 Else i = m + 1
Loop
Text2.Text = s
数组元素a(1)到a(10)的值依次为“2,4,5,8,9,10,13,17,19,20”。执行该程序段,则文本框Text2中显示的内容可能的是( )