必修3
Unit 1 Festivals around the world
Unit 2 Healthy eating
Unit 3 The Million Pound Bank Note
Unit 4 Astronomy: the science of the stars
Unit 5 Canada -- "The True North"
必修4
Unit 1 Women of achievement
Unit 2 Working the land
Unit 3 A taste of English humour
Unit 4 Body language
Unit 5 Theme parks
