ContentsLesson Text Page Number1 A．The United States of 1
AmericaB．The People of Canada2 A．San Francisco 18
B．The Great Fire of London3 A．Exploring space 34
B．Galaxies4 A．The Rise of Ancient 51
GreeceB．Alexander the Great5 A．The Nobel Prize 68
B．Madame Curie s FirstYears in Paris6 A．Gautama,the Buddha 86
B．Christianity7 A．Homer 103
B．Helen of Troy8 A．The Birth of a Volcano 122
B．Terrible Earthquakes9 A．Robots 140
B．The Computer Age10 A．The Mogul Empire 160
B．The Taj Mahal11 A．Leonardo da Vinci 177
B．Galileo12 A．The Olympic Games 195
B．The Olympic Gamesin Ancient Greece13 A．The Roman Empire 212
B．Pompeii14 A．Australia 231
B．Living in the Arctic Circle15 A．Brazil 251
B．A Journey Across Kenya16 A．William Shakespeare 270