目录Unit 1 In the library 1
Unit 2 Water sports 17
Unit 3 Make our world more beautiful! 35
Unit 4 Travel 50
Unit 5 Have a good time! 66
Unit 6 Mainly revision 79
TEST期中测试题 92
Unit 7 A man who never gave up 99
Unit 8 Merry Christmas! 114
Unit 9 What is it made of? 129
Unit 10 When was it built? 142
Unit 11 Planting trees 158
Unit 12 Mainly revision 173
TEST期末测试题 183
KEYS参考答案 192