大学英语单元跟踪测评 4PDF电子书下载

CONTENTS前言 1

Unit One Big Bucks the Easy Way 1

Unit Two Deer and the Energy Cycle 12

Unit Three Why Do You Believe That the Earth Is Round？ 23

Unit Four Jim Thorpe 34

Unit Five To Lie or Not to Lie——The Doctor'S Dilemma 45

Unit Six How to Mark a Book 56

Unit Seven The Luncheon 68

Unit Eight The New Caves 79

Unit Nine Journey West 90

Unit Ten Why People Work 101

大学英语单元跟踪测评答案 111