Connect the internet by Ubuntu on virtualbox, macbook pro with wireless

ここをみたらできました。

https://forums.virtualbox.org/viewtopic.php?f=7&t=19305

1. Shut down your windows 7 vm.
2. Open up virtual box - your windows 7 vm should be powered off
3. click on your windows 7 vm
4. click settings
5. Click Network
6. You should have adapter 1: (Enable Network Adapter checked) Adapter type: Intel PRO/1000 MT Desktop, Attached to: NAT, Name: (blank)
7.Click on adapter 2 - here you will create a new adapter.. Adapter type: Intel PRO/1000 MT Desttop, Attached to: Bridged Adapter, Name: en1:AirPort
8.Click OK.
9. Start your windows 7 VM and enjoy networking goodness.