Unit 01 Abandoned and Ruined 「Big Houses」
Unit 02 Slavery in the United States
Unit 03 Normal and Abnormal Intestinal Absorption by Humans
Unit 04 Professor
Unit 05 How to Manage Your Time
Unit 06 Amie Schaefer
Unit 07 Life of Pi
Unit 08 Toy Story
Unit 09 Ambulance
Unit 10 History of Basketball
Unit 11 Amelia Earhart at Childhood （1）
Unit 12 Amelia Earhart in Youth （2）
Unit 13 Amelia Earhart - Famous Female Aviator （3）
Unit 14 Amelia Earhart - Famous Female Aviator （4）
Unit 15 Carnival
Unit 16 Great Depression
Unit 17 Arithmetic
Unit 18 Boston Bombing Suspect Charged
Unit 19 Dimension
Unit 20 Alien
Unit 21 Arch Bridge
Unit 22 The Efficient Level of Pollution and the Coase Theorem （1）
Unit 23 The Efficient Level of Pollution and the Coase Theorem （2）
Unit 24 The History of Human Evolution
Unit 25 Antelope
Unit 26 Import-Export Taxes and Duties in China
Unit 27 Obama’’s Euro-Crisis Lecture Is 「Pitiful and Sad」
Unit 28 Dunkirk in World War II
Unit 29 Japanese War Crimes
Unit 30 Close Striking Assault - Martial Arts
Unit 31 Antique
Unit 32 Emerging Trends Behind China’’s Anti-corruption Drive
Unit 33 Oscar Pistorius Awarded Bail
Unit 34 Manuel Gonzales with Big Imagination （1）
Unit 35 Manuel Gonzales with Big Imagination （2）
Unit 36 Nobel Laureate Mo Yan （1）
Unit 37 Nobel Laureate Mo Yan （2）
Unit 38 5.12 Sichuan Earthquake
Unit 39 Peng Liyuan， China’’s First Lady （1）
Unit 40 Peng Liyuan， China’’s First Lady （2）
Unit 41 What Causes Allergies?
Unit 42 Blue Whale
Unit 43 Types of Volcanic Eruptions
Unit 44 「If Islam were a violent religion， then all Muslims would be violent.」
Unit 45 Evaluation of the Elderly Patient
Unit 46 Amateur vs. Professional Boxing
Unit 47 Surgeon
Unit 48 Mammals
Unit 49 Calendar Types： Solar， Lunar and Lunisolar Calendars
Unit 50 Jonathan Pollard - an Israel’’s Spy in the US
Keys to the Exercises
