Dim tmp As Integer

Dim a(1 To 10) As Integer

Private Sub Command1_Click()

  For i=2 To 10

Text1.Text = ""

For i= 1 To 5

  For j=i+1 To 6

  If s(i) + s(i) < s(j) + s(i) Then

    t= s(j): s(j)= s(i): s(i)=t

  End If

  Next j

Next i

For i=1 To 6

  Text1.Text = s(i) + Text1.Text

Next i

  If  Then

    tmp = a(i)

      For j=  To 1 Step -1    ‘依次后移

        If tmp > a(j) Then Exit For

        a(j+1)= a(j)

      Next j

          ‘插入数据

    End If

  Next i

  For i= 1 To 10

    List1.Addltem a(i)

  Next i

End Sub

要实现上述功能，方框①②③中的语句分别是（  ）

from random import randint

s=["C++","Java","VB","Pascal","C","Python"]

for i in range(2):

    k=randint(0,2)*2

    s=s[:k]+s[k+1:]

print(s)

执行该程序段后，变量s的值不可能是（    ）

temp=a[n-1]

for i in range(n-2,x-1,-1):

a[x]=temp