已知⊙O₁的直径为6cm，⊙O₂的直径为8cm，两圆的圆心距O₁O₂ 为1cm，则这两圆的位置关系是

A．内切

B．外切

C．相交

D．内含

下面程序段的运行结果是______。
Option Base 1
Private Sub swap(a( ) As Integer)
For I = 1 to 10\2
t =a(I)
a(I) = a(10-I+l)
a(10-I+1) = t
Next I
End Sub
Private Sub Form Click( )
Dim x(10) As Integer
For I = 1 to 10
x(I) = I * 2
Next I
Swap x( )
For I=1 to 10
Print x(I)
Next I
End Sub