[목차] Unit 01 A Story of Ice Cream Unit 02 Nobody Likes Litter! Unit 03 Dogs with Jobs Unit 04 Highway Signs Unit 05 Scary Names for Insects and Spiders Unit 06 Up, Up, and Away Unit 07 A Bridge to Everywhere Unit 08 It's a Duck ... It's a Beaver ... It's a Platypus! Unit 09 Why Is the Ocean Blue? Unit 10 Imaginary Creatures Unit 11 Tropical Rainforests Unit 12 Sometimes It Pays To Wait Unit 13 Helicopters Can Do It Unit 14 Choosing a Pet Turtle Unit 15 Birds with Long Legs Unit 16 Fighting Fires in My Sleep Unit 17 Cotton Patch Geese Unit 18 Kites Fly High Unit 19 Hide-and-Seek Unit 20 Mighty Monsters