UNIT 1 Disappearing Honeybees
UNIT 2 The Voice of the Mona Lisa
UNIT 3 Making a TV Commercial
UNIT 4 Vomiting Caterpillars
UNIT 5 Container? Corntainer?
UNIT 6 Machu Picchu
Checkup 1 Food Eating Contests

UNIT 7 The Mystery House
UNIT 8 The Power of Music
UNIT 9 Science of Crying
UNIT 10 The Siesta
UNIT 11 La Tomatina
UNIT 12 The Truth about the Bats
Checkup 2 The California Gold Rush

UNIT 13 The History of Pizza
UNIT 14 Early Traffic Lights
UNIT 15 The Vegetable Orchestra
UNIT 16 Polyglots in the World
UNIT 17 Sherlock Holmes
UNIT 18 The Leaning Tower of Pisa
Checkup 3 Tickling and Laughter

UNIT 19 Animal Dentist
UNIT 20 Magic and Magician
UNIT 21 Mystery Meat
UNIT 22 The Story of Ice Cream
UNIT 23 The Meaning of Games
UNIT 24 The Eiffel Tower
Checkup 4 The Burning of Zozobra

Appendix Reading Word Per Minute(WPM) Graph