目录 1
Unit 11 Scientific achievements 1
Unit 12 Fact and fantasy 7
Unit 13 The water planet 13
Unit 14 Freedom fighters 20
Unit 15 Destinations 26
第二学期期中练习题 33
Unit 16 The United States of America 43
Unit 17 Disabilities 50
Unit 18 Inventions 56
Unit 19 The Merchant of Venice 63
Unit 20 Archaeology 70
第二学期期末练习题 77
参考答案 86