CONTENTSUnit 1 Meals and Culture 1
Unit 2 Natural Disasters 7
Unit 3 Ways of Life 13
Unit 4 Learning by Doing 20
Unit 5 American Cities 28
Unit 6 How to Su？？eed 35
Unit 7 Making a Living 43
Unit 8 Sports and Games 51
Unit 9 Life and Health 59
Unit 10 Seiemtifie Mysteries 66
KEY 73
TEST YOURSELF 83