Topic 1 China has developed rapidly in recent years 1
Unit 1 The Changing World 1
Topic 2 What has happened to the population? 4
Topic 3 The world has changed for the better 7
Unit 2 Saving the Earth 11
Topic 1 I can't stand the environment here 11
Topic 2 How does pollution hurt the earth? 14
Topic 3 Let's be greener people 17
Topic 1 English is widely spoken around the world 21
Unit 3 English around the World 21
Topic 2 English is spoken differently in different countries 24
Topic 3 It's important to learn English well 27
Unit 4 Fantastic Science 31
Topic 1 The spaceship is so magical! 31
Topic 2 When was it invented? 34
Topic 3 Perhaps people will fly to Mars 37
期末测试 41
听力录音稿及参考答案 44