大学英语综合教程 全新版 学生自学辅导 3PDF电子书下载

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综合教程（3）学生自学辅导 1

Contents 1

Unit One Changes in the Way We Live 1

Unit Two Civil-Rights Heroes 42

Unit Three Security 78

Unit Four Extraterrestrials 107

Unit Five How to Celebrate Holidays 139

Unit Six The Human Touch 176

Unit Seven Making a Living 211

Unit Eight Cloning 255

Appendix Key to Supplementary Exercises 307

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