第一章 难度等级 1
Reading Exercise 1 1
Reading Exercise 2 13
Reading Exercise 3 24
Reading Exercise 4 37
Reading Exercise 5 50
Reading Exercise 6 63
第二章 难度等级 75
Reading Exercise 1 75
Reading Exercise 2 89
Reading Exercise 3 102
Reading Exercise 4 115
Reading Exercise 5 127
Reading Exercise 6 141
第三章 难度等级 155
Reading Exercise 1 155
Reading Exercise 2 167
Reading Exercise 3 181
Reading Exercise 4 194
Reading Exercise 5 207
Reading Exercise 6 222
第四章 难度等级 235
Reading Exercise 1 235
Reading Exercise 2 250
Reading Exercise 3 264
Reading Exercise 4 278
Reading Exercise 5 295
Reading Exercise 6 311
参考答案 327