Listening 11. (No. 33~34)
https://www.youtube.com/watch?v=sIE4LQkKcx0&list=PL6D-YTosvGYq8YexsOG53BGav1CD0t3aM&index=24
Listening 12. (No. 35~36)
https://www.youtube.com/watch?v=DcErUwrl64M&list=PL6D-YTosvGYq8YexsOG53BGav1CD0t3aM&index=25