Unit 1 Teachers'Day 1
Unit 2 The sports meeting 8
Unit 3 A good teacher 14
Unit 4 What were they doing？ 21
Unit 5 The accident 28
Unit 6 In the library 35
Unit 7 Mainly revision 42
上学期期中试卷（A） 49
上学期期中试卷（B） 56
Unit 8 On the farm 62
Unit 9 A visit to a factory 69
Unit 10 Mr Green's problem 76
Unit 11 A great inventor 83
Unit 12 Have a good time,Jim！ 90
Unit 13 Merry Christmas！ 97
Unit 14 Mainly revision 104
上学期期末试卷（A） 111
上学期期末试卷（B） 116
Unit 15 At home with the twins 122
Unit 16 What's it made of？ 130
Unit 17 What was it used for？ 137
Unit 18 Planting trees 144
Unit 19 Mainly revision 151
下学期期中试卷（A） 158
下学期期中试卷（B） 165
Unit 20 The world's population 172
Unit 21 Shopping 179
Unit 22 At the doctor's 186
Unit 23 The football match 193
Unit 24 Mainly revision 200
下学期期末试卷（A） 207
下学期期末试卷（B） 214
参考答案 221