Introduction 1
1．Motherhood in a Changing World:Women in Ghana 1
2．U．S．Cities:Past and Present 23
3．Ordinary Aspirin Is Truly a Wonder Drug 43
4．The Crime of the Month Review ExercisesⅠ 84
5．Tips on Doing Business with the Arabs 95
6．How to Give a Good Speech 117
7．The Earth s Spreading Deserts Review ExercisesⅡ 162
8．Living a Long Life 171
9．The Female Mosquito 193
10．Test Your Nutrition IQ 215
Review ExercisesⅢ 238
Vocabulary 249