①{#blank#}1{#/blank#}

②{#blank#}2{#/blank#}

s=0

For k =3 To 1 Step-1

    If k <=1 Then x=1

    If k <=2 Then x=2

    If k <=3 Then x=3

    s=s+x

Next k

Text1. Text= Str(s)

该程序段运行后，文本框Text1中显示的内容是（  ）

Dima( 1 To 5) As Integer

Dimi As Integer, j As Integer, s As String

s=“”

    For i= 2 To 5

        For j=i To 5

            If j Mod i=0 Then a(j) =a(j)+1

        Next j

    Next i

    For i= 1 To 5

        If a(i) <>1Then s=Str(i) +s

    Next i

    Text 1．Text=S

若数组a的初始值都为0，则运行该程序段后，Text 1中显示的内容为（  ）

count=0

For i=1 To 20

    a(i) =Int(Rnd*100) + 1

Next i

For i= 1 To 20

    ①

Next i

For i= 1 To 100

    If b(i) <> 0 Then count =count+1

Next i

Label 1.caption=“不重复数字个数”+Str(count)

为实现上述功能，则程序①处应填入的语句为（  ）