大学英语四级考试词汇语法点击1000题PDF电子书下载

Unit One 1

Unit Two 12

Unit Three 22

Unit Four 32

Unit Five 43

Unit Six 53

Unit Seven 64

Unit Eight 74

Unit Nine 86

Unit Ten 96

Unit Eleven 107

Unit Twelve 117

Unit Thirteen 127

Unit Fourteen 136

Unit Fifteen 145

Unit Sixteen 155

Unit Seventeen 165

Unit Eighteen 176

Unit Nineteen 187

Unit Twenty 196