unit 1
text a： a letter to my son
text b： a letter to my daughter
 
unit 2 
text a： the power of habit
text b： to break bad habits
 
unit 3
text a： motivation staying motivated
text b： purpose in life
 
unit 4
text a： against email
text b： information and copyright
 
unit 5
text a： happy easter
text b： the popularization of april fools traditions
 
unit 6
text a： media education and media violence
text b： government and industry responses to media violence
 
unit 7 
text a： soccer
text b： the origin of the olympic games
 
unit 8
text a： when two or more gather
text b： five images of love
 
unit 9
text a： winning the job interview game
text b： the giver
 
unit 10
text a： the essence of cha
text b： beauty
 
unit 11
text a： why boys don't play with dolls
text b： why women smile
 
unit 12
text a： the color of success
text b： i have a dream
 
unit 13
text a： recruiting with sustainable design
text b： hydrogen： a new role in energy? 
 
unit 14
text a： evolution
text b： a clean, well lighted place