Contents 1
Unit 11 Scientific achievement 1
Unit 12 Fact and fantasy 9
Unit 13 The water planet 17
Unit 14 Freedom fighters 26
Unit 15 Destinations 35
Unit 16 The United States of America 44
Unit 17 Disabilities 53
Unit 18 Inventions 62
Unit 19 The Merchant of Venice 71
Unit 20 Archaeology 80
听力录音材料 89
参考答案 113