Unit 1 The Thousand and One Nights Unit 2 If You Go to the Mo N_Unit 3 Chimpanzee-The Smart Ape Unit 4 The Legend of Atlantis Unit 5 The Gift of Language Unit 6 Why Did the Dinosaurs Die out? Unit 7 Fossils Unit 8 What Is Everything Made of? Unit 9 Are There Any Real Monsters? Unit 10 Skeleton in the Closet Unit 11 Dynamite-The Stick That Explodes Unit 12 Wales Unit 13 The Mystery of Sleep Unit 14 Is There Life on Mars? Unit 15 Apple Polisher Key to Comprehension Questions 英語音標(biāo)