UNIT ONE 1
Ⅰ．HOW DO THE MOVIES DO IT？ 1
Ⅱ．THE BIRTH OF BLUE JEANS 3
Ⅲ．A CHINESE WOMAN I KNEW 6
UNIT TWO 9
Ⅰ．WELCOME TO OUR BANK 9
Ⅱ．IS THE EARTH EXACTLY ROUND？ 12
Ⅲ．THE BERMUDA TRIANGLE 14
UNIT THREE 18
Ⅰ．THE TOOTH TRADE 18
Ⅱ．A LIBRARY MISHAP 20
Ⅲ．WHAT DO YOU KNOW ABOUT THE EARTH？ 23
UNIT FOUR 26
Ⅰ．THE VIRTUE CALLED DEVOTION 26
Ⅱ．THE FIRST MAN TO TRAVEL ACROSS NORTH AMERICA 28
Ⅲ．A NEW KIND COMMUNITY IN THE US 31
UNIT FIVE 34
Ⅰ．HOW LATIN BROKE UP INTO A NUMBER OF NEW LANGUAGES 34
Ⅱ．SOCRATES 36
Ⅲ．LIFE IN DEATH 39
VOCABULARY AND STRUCTURE TEST ONE 42
UNIT SIX 47
Ⅰ．THE POLITICAL SYSTEM OF BRITAIN 47
Ⅱ．HOW PLANTS AND ANIMALS HELP EACH OTHER 50
Ⅲ．ALWAYS ON SUNDAES 52
UNIT SEVEN 56
Ⅰ．LEFT，RIGHT AND CENTRE 56
Ⅱ．THE STRANGER 58
Ⅲ．THE LINGUISTIC HABITS OF A NEW GENERATION 61
UNIT EIGHT 64
Ⅰ．UNDERWATER PIONEER：SYLVIA EARLE 64
Ⅱ．THE HUSKY——HERO OF THE ARCTIC 66
Ⅲ．MY FRIENDLY INSURANCE AGENT 69
UNIT NINE 72
Ⅰ．EXPLODING THE MYTHS ABOUT THE AMERICAN FAMILY 72
Ⅱ．THE VALUE OF CAMELS IN DESERT 74
Ⅲ．THE PELICAN 77
UNIT TEN 80
Ⅰ．WORDS THAT WORK MIRACLES 80
Ⅱ．WHY DOES FOOD COST SO MUCH？ 82
Ⅲ．MIND AND CANCER 85
VOCABULARY AND STRUCTURE TEST TWO 88
UNIT ELEVEN 93
Ⅰ．THE YOUNGER GENERATION KNOWS BEST 93
Ⅱ．A LOOK AT THE FUTURE 95
Ⅲ．WHY DON T GIRLS THINK LIKE BOYS？ 98
UNIT TWELVE 101
Ⅰ．MONEY——A MEASUREMENT IN ECONOMIC SYSTEM 101
Ⅱ．THE SEARCH FOR EXTRATERRESTRIAL INTELLIGENCE 103
Ⅲ．COLOURS IN SPIDER WEBS 106
UNIT THIRTEEN 109
Ⅰ．THE FLUIDITY OF SCHOLARS 109
Ⅱ．A CENTURY-OLD GHOST TOWN RAISES ITS DEAD 112
Ⅲ．RIVER RATS SAVE STREAM 114
UNIT FOURTEEN 118
Ⅰ．ADULT STUDENTS GIVE NEW LIFE TO EDUCATION 118
Ⅱ．PRESERVING FOOD 121
Ⅲ．ANALOGY AND MEMORY 123
UNIT FIFTEEN 127
Ⅰ．BANKS AND BANKING 127
Ⅱ．PROTEIN：CAN YOU GET BY WITHOUT MEAT？ 129
Ⅲ．NO ONE WANTS TO LIVE TO BE A HUNDRED 132
VOCABULARY AND STRUCTURE TEST THREE 136
REFERENCE ANSWERS TO THE EXERCISES 141
ANSWERS TO VOCABULARY AND STRUCTURE TESTS 154
GENERAL VOCABULARY AND PHRASES 155