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1．Mr．，Mrs．，Miss and Ms． 1

2．The First Stamps 2

3．How Did April Fool's Day Begin？ 5

4．Why Do Barber Shops Have Red and White Poles？ 7

5．Why Do Men Have Buttons on Their Jacket Sleeves？ 9

6．What Is the Riddle of the Sphinx？ 11

7．What Causes Waves？ 12

8．The Birth of an Island 15

9．How Civilization Can Die？ 17

10．Some Things Do Not Change 19

11．The Longest River 21

12．The Longest Fence in the World 24

13．Antonio Gaudi and His Church 26

14．The Tragedy of Saint-Pierre 28

15．Animals Which Live a Long Time 30

16．Snakes 32

17．An Insect That Opens Doors 35

18．The Fastest Tongue on Earth 38

19．Pigeon Talk 41

20．Monkey Intelligence 43

21．A Shooting Animal 45

22．Quiet！Worms at Work 49

23．Good Parents in Antarctica 50

24．Our Most Dangerous Enemy—the Rat 52

25．Tiny but Beautiful 54

26．The Tree of Life 57

27．Eating the Sun 59

28．The Children of the Sun 60

29．Life and Death of a Sun 62

30．The Baby in the Silver Suit 64

31．What Does Man Do with His Big Brain？ 67

32．Blood to Save Lives 68

33．Roman Physicians 70

34．How the Olympic Games Started 72

35．Women in the Olympics 74

36．The Closing of the Games 76

37．Basketball 78

38．The Origin of words 80

39．World of Words 83

40．Slang 84

41．Two Languages or One？ 86

42．Colourful Language 87

43．The English Language 89

44．Where Did Americans Come from？ 92

45．American Indians 93

46．Which States in the U．S．Have the Most People？ 95

47．How Did the States in the U．S．Get Their Names？ 96

48．The Congress of the United States 98

49．The Climate of the United Statcs 101

50．New York Is More 102

51．Which Washington？ 104

52．Schools in the U．S．A． 108

53．Mail Service in the U．S．A． 109

54．The Throwaway Society 110

55．Town and Country 112

56．Living under Cover 115

57．An Indoor Town 117

58．A City at Sea 119

59．Food 122

60．Jam and Pickle 124

61．Drying and Smoking 125

62．Food Decay 127

63．Bottles and Cans 128

64．Refrigeration 130

65．Salt（Ⅰ） 132

66．Salt（Ⅱ） 135

67．Clothmaking 137

68．Wool，Cotton，or Nylon？ 139

69．Plastics 140

70．Fly with Wings Made from Chicken Feathers 142

71．A Strange Thing from the Sky 144

72．Early Passenger Service 146

73．Have You Anything to Declare？ 148

74．A New Way to Fly 150

75．Steam Cars 152

76．Cars for Tomorrow 155

77．Hovercraft 157

78．Hovertrains 160

79．A New Lifeboat 163

80．What Is a Camera？ 165

81．Seeing Aid 167

82．Adjustable-focus Glasses 168

83．Manual Marvel 170

84．I Saw Him on the Phone Today 172

85．Across the Atlantic by Computer 174

86．The Computer and the Motor-car 177

87．Computer Helps Fire Fighters 179

88．Zero Hour 181

89．Satellites in the Solar System 183

90．Space Research 185

APPENDIX1 KEY TO EXERCISES 188

APPENDIX2 VOCABULARY 194