大学英语阶梯听力 4 综合训练PDF电子书下载

Unit One T*1 T K 141

Unit Two T*7 T K 147

Unit Three T*13 T K 152

Unit Four T*19 T K 158

Unit Five T*25 T K 164

Unit Six T*31 T K 170

Unit Seven T*37 T K 176

Unit Eight T*43 T K 182

Unit Nine T*49 T K 189

Unit Ten T*55 T K 196

Unit Eleven T*61 T K 202

Unit Twelve T*67 T K 208

Unit Thirteen T*73 T K 214

Unit Fourteen T*78 T K 220

Unit Fifteen T*84 T K 226

Test 1 T*90 T K 232

Test 2 T*95 T K 238

Test 3 T*100 T K 243

Test 4 T*105 T K 248

Test 5 T*110 T K 253

Test 6 T*115 T K 258

Test 7 T*120 T K 264

Test 8 T*125 T K 269

Test 9 T*130 T K 274

Test 10 T*135 T K 280