大学英语分级训练 下PDF电子书下载

Unit One 1

Band 3

Band 4

Unit Two 16

Unit Three 30

Unit Four 45

Unit Five 60

Unit Six 74

Unit One 90

Unit Two 107

Unit Three 122

Unit Four 139

Unit Five 155

Unit Six 170

Unit Seven 184

Unit Eight 200

Unit Nine 216

Unit Ten 234

Reference Key 252

Appendix 1 269

Appendix 2 293