Reading 7. (No. 57~58)
https://www.youtube.com/watch?v=zPx7cNs52p8&list=PL6D-YTosvGYq8YexsOG53BGav1CD0t3aM&index=48
Reading 8. (No. 59~62)
https://www.youtube.com/watch?v=53MwYeL_7L0&list=PL6D-YTosvGYq8YexsOG53BGav1CD0t3aM&index=49