Lesson One Man and Animals
Lesson Two Travelling with "Queen"
Lesson Three Myths and Fossil Hunting
Lesson Four Photography
Lesson Five Modern Toys
Lesson Six Adventures on the Icefall
Lesson Seven Travel Schooling
Lesson Eight Our Earliest Ancestors
Lesson Nine How Money Began
Lesson Ten Blessings from Nature
Lesson Eleven Modern Technologies
Lesson Twelve The Wonder of Language
Lesson Thirteen Adventures in Roraima
Lesson Fourteen The Sinking of Titanic
Lesson Fifteen Child Labour
Lesson Sixteen Bullying
Lesson Seventeen Mission
Lesson Eighteen Blessed Piracies
Lesson Nineteen Disastrous Damage to Oceans
Lesson Twenty Road Accidents
Lesson Twenty-one Teaching in China
Lesson Twenty-two Drawbacks of Social Progress
Lesson Twenty-three Pleasure of Diving
Lesson Twenty-four Hurricanes
Lesson Twenty-five The Age of Bacteria
Lesson Twenty-six Migration
Lesson Twenty-seven Insomnia
Lesson Twenty-eight Robbery
参考文献
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