Unit3 Australia Lead-in Today we are going to learn about a we begin our new unit,let us see some pictures! National Flag National Emblem Canberra The Sydney Opera House (悉尼歌剧院) The Great Barrier Reef (大堡礁) The Koala bear (树袋熊/考拉) The Platypus (鸭嘴兽) kangaroo (袋鼠)