UNIT 1 INFORMATION OVERLOAD 1
UNIT 2THE ACHILLESHEEL 25
UNIT 3 EARLY TO BED， EARLY TORISE 47
UNIT 4 ANIMAL INTELLIGENCE 73
TEST 1 95
UNIT 5 LONGEVITY： REFUSING TO BE INVISIBLE 107
UNIT 6 GIVING TO OTHERS：WHY DO WE DOIT？ 131
UNIT 7 GOODBYE TO THE SIT-DOWN MEAL 155
UNIT 8 NO TECHNOLOGY？NO WAY！ 177
TEST 2 199
国际音标表 210
著作权人名单 211