Unit 13 Albert Einstein

Unit 14 Satellites

Unit 15 A famous detective

Units 13～15 单元测试

Unit 16 The sea

Unit 17 Life in the future

Unit 18 Mainly Revision

Units 16～18 单元测试

Unit 19 A freedom fighter

Unit 20 Disability

Unit 21 Music

Units 19～21 单元测试

Unit 22 A tale of two cities

Unit 23 Telephones

Unit 24 Mainly Revision

Units 22～24 单元测试

期中综合试题

期末综合试题

参考答案