《大学英语》 修订本 精读教案 第4册PDF电子书下载

UNIT ONE BIG BUCKS THE EASY WAY 1

UNIT TWO DEER AND THE ENERGY CYCLE 21

UNIT THREE WHY DO WE BELIEVE THAT THE EARTH IS ROUND? 38

UNIT FOUR JIM THORPE 59

UNIT EIVE TO LIE OR NOT TO LIE—THE DOCTOR'S DILEMMA 83

UNIT SIX HOW TO MARK A BOOK 107

UNIT SEVEN THE LUNCHEON 135

UNIT EIGHT THE NEW CAVES 164

UNIT NINE JOURNEY WEST 192

UNIT TEN WHY PEOPLE WORK 215