大学英语 修订本 精读 第1册PDF电子书下载

Unit One 1

Unit Two 21

Progress Check One 43

Unit Three 53

Unit Four 76

Progress Check Two 99

Unit Five 109

Unit Six 132

Progress Check Three 157

Unit Seven 166

Unit Eight 192

Progress Check Four 216

Unit Nine 226

Unit Ten 247

Progress Check Five 267