| Unit 1 In the library Unit 2 Water sports Unit 3 Make our world more beautiful! Unit 4 Travel Unit 5 Have a good time Unit 6 Mainly revision 期中测试（I） Unit 7 A man who never gave up Unit 8 Merry Christmas Unit 9 What is it made of? Unit 10 When was it built? Unit 11 Planting trees Unit 12 Mainly revision 期末测试（II） Unit 13 The world's population Unit 14 Shopping Unit 15 A doctor for animals 期中测试（I） Unit 16 The football match Unit 17 The missing necklace Unit 18 Mainly revision 期末测试（II） 模拟训练题 模拟考试题 附录：随堂小练，期中（末）测试及教材部分习题答案 Unit 19 Unit 20 Unit 21 Unit 22 Unit 23 Unit 24 |
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