目录

Unit 11 Scientific achievements

Unit 12 Fact and fantasy

Unit 13 The water planet

Unit 14 Freedom fighters

Unit 15 Destinations

第二学期期中练习题

Unit 16 The United States of America

Unit 17 Disabilities

Unit 18 Inventions

Unit 19 The Merchant of Venice

Unit 20 Archaeology

第二学期期末练习题

参考答案