大学英语要点归类强化与英语四级考试同步训练PDF电子书下载

Unit 1 1

Unit 2 10

Unit 3 19

Unit 4 28

Unit 5 37

Unit 6 47

Unit 7 57

Unit 8 67

Unit 9 77

Unit 10 87

Key to Exercises 96

Unit 1 108

Unit 2 120

Unit 3 130

Unit 4 141

Unit 5 152

Unit 6 163

Unit 7 174

Unit 8 184

Unit 9 195

Unit 10 206

Key to Exercises 218

Unit 1 230

Unit 2 243

Unit 3 255

Unit 4 267

Unit 5 280

Unit 6 292

Unit 7 303

Unit 8 317

Unit 9 329

Unit 10 341

Key to Exercises 353

Unit 1 365

Unit 2 377

Unit 3 389

Unit 4 402

Unit 5 414

Unit 6 427

Unit 7 439

Unit 8 452

Unit 9 463

Unit 10 474

Key to Exercises 486