Book IV
Unit 01
Intelligence
Is the Octopus a Human Killer?
Honeybee's Life in a Colony
How to Grow Old?
Are Moral Standards Declining?
The Meanings of Residential Mobility
The Finger of Suspicion
The Study of Liberal Arts
Who Are Susceptible to Colds?
The Varieties of American Newspapers
Unit 02
Are Camels Obedient Beasts of Burden?
Sunlight
The Power of Voice
Energy
Earthquake
How to Train Your Dogs?
A Woman Writer
Psychology and Consumer
Top Earning Wives and Their Marriages
Crimes
Unit 03
Life in the Future
Health-Related Behaviors
The First Subway
Heroes
Neanderthals
High-Tech Communications
Organ Transplant
Reading
Population and Food
Sport
Unit 04
Pay Structure
Social Status
Social Factors and Music Prodigies
Standard English
Insurance
Earthquake Prediction
Clouds
Libraries
Caution with Concrete
Liquid and Gas
Unit 05
Libraries in Metropolitan Areas
Accidents and Human Behavior
A Refused Letter
Rock Music
Treatment of Bedtime Tantrums
Population
School Phobia
Individual, Group and Crowd
Gestures
Turkey -- The Symbol of America?
Unit 06
The Effect of Noise Pollution
Objects in Space
Scientific Explanation
Courses in University
Trees
Braille
Can Clothes Reveal Ourselves?
How to Stay Young
Stradivari's Violins
Thinking and Feeling
Unit 07
Hunting and Sporting Activities
Tourism
The Prolonged Life
Greenpeace
A New Transformation of Hospitals
Significant Economic Issue -- Inflation
The Basic Economic Systems
What Attracts One to Another
A New Way to Keep Food Fresh
The Search for a Vaccine Against Malaria
Unit 08
The Effect of Air Pollution
Adaptation of Living Things
Many Divisions of Physics
Competition in America
Fallacies about Food
Appropriate Technology
Birds and Planes
How to Do Exercise
Intelligence and Environment
The Selection of English Teachers
Unit 09
Olympic Sponsors
How to Seek and Save Employees
Believe Evidence or Not
Mr. and Mrs. Lester
Language and Culture
The Private Ownership of Hydrogen Bombs
Noise and Health
Virus Blockers
G and PG Movies
Gallup Extreme Magic
Unit 10
Culture Differences
Parental Influence in Education
Teaching and Research
Stereotypes
Opportunities and Concentration
Stokoe and Sign Language
Language and Brain Development
Real Beauty
Elite Pool
Tips on Public Speaking
Unit 11
Proteins in a Balanced Diet
Teachers and Pupils' Attitudes
Women's Well-Being
Beauty
Violence in American Families
Glass
Media Impact
Adolescence
Preparations for Job Interviews
Animal Experiments
Unit 12
What Is Nourishing to Eat?
Sex Prejudice
New Life for the Handicapped
Three English Dictionaries
Patent
Credit Terms in Transactions
Survival in Desert
Eyes -- Windows of the Soul
Poverty
Animal Agriculture
Unit 13
Bright or Not-So-Bright
Computer Crimes
Getting an Education
The Computer and the Law
Education -- Global Enterprise
Hi-tech in Developing Countries
The Age of the Internet
Old Love, Old Tunes
Television
Mars Exploration
Unit 14
British Free Education Is at Risk
Culture Activities
On Intelligent People
Dialect and Language
New Life of Clinton
The Curse on TV
Bits
Arranged Marriages in India
The Golden Mean (PHI)
The Antler Riddle
Unit 15
Music-Culture
The Internet's New Application
Worrying Trend of Reading Ability
How to Make Better Use of Humor
Influence on Children's Personality
Useless Generosity
Challenging Medical Treatment
Access to the Internet
Culture Shock
An Analysis Before Iraq War
Unit 16
New Eating Trend
Britain's Food Production
Accountability
The Theory of Losing Weight
Global Climate Will Keep Changing
The Oil Price Change Analysis
Experiment on Chimpanzees
The Solution to the Problems in INS
Growing Older
The Development of Information Carrier
Unit 17
Wood or Brick
Viruses
Vitamin C and Cancer
Laughter Works
Memories of School Years
Manners on the Road
Water in a Growing Plant
Lecture Method
Safeguard It
Types of Personality