Unit 1 The Lonely Giant 1
Unit 2 Five of Aesop s Fables 5
Unit 3 How Do Animals Know When an Earthquake Is Coming？ 10
Unit 4 Education in the United States 14
Unit 5 Debbie Moone s Problem Page 18
Unit 6 The Smoking Mountain 22
Unit 7 Why Don t Girls Think Like Boys? 27
Unit 8 Mysteries of the Sea 31
Unit 9 Edison s Thinking Cap 36
Unit 10 Food and Health 39
Unit 11 The Youngest Painter in the World 44
Unit 12 Hello 48
Unit 13 Colour 52
Unit 14 Sports around the World 56
Unit 15 Flowers 60
Unit 16 Strange Souvenirs 64
Unit 17 All Thumbs 68
Unit 18 You Will Go to Prison．．．at Home 73
Unit 19 Do UFO s Come from Outer Space？ 79
Unit 20 Professional Sports 84
Unit 21 The Debt-Collector 88
Unit 22 First Aid 93
Unit 23 The First Four Minutes 98
Unit 24 The Life Style of a Rock Star 103
Unit 25 Keeping Up with the Joneses 108
Key to Comprehension Questions 112
英语音标 121