Unit 1 Places of Interest 1
Unit 2 Stories on the Wheel 10
Challenging Yourself Ⅰ Exploring the Wonders 20
Unit 3 Plants 23
Unit 4 Animals 32
Challenging Yourself Ⅱ Man and Pets 41
Unit 5 Art and Culture 44
Unit 6 Poems and Poets 53
Challenging Yourself Ⅲ Drama 62