Unit 13 Healthy eating

Unit 14 Festivals

Unit 15 The necklace

Unit 16 Scientists at work

Unit 17 Great women

第二学期期中检测

Unit 18 New Zealand

Unit 19 Modern agriculture

Unit 20 Humour

Unit 21 Body language

Unit 22 A world of fun

第二学期期末检测

参考答案及解析