前言 3
推荐学习方法 4
每日检查表 8
Science 10
UNIT 01 Fog 10
UNIT 02 Giraffe 13
UNIT 03 Stem 16
UNIT 04 Wind 19
UNIT 05 Duck 22
UNIT 06 Temperature 25
UNIT 07 Human Teeth 28
UNIT 08 Arctic 31
UNIT 09 Rain 34
UNIT 10 Kangaroo 37
UNIT 11 Fruit 40
UNIT 12 Heat 43
Social Studies 48
UNIT 13 Land 48
UNIT 14 Job 51
UNIT 15 Freedom 54
UNIT 16 Country 57
UNIT 17 Firefighter 60
UNIT 18 Factory 63
UNIT 19 Law 66
UNIT 20 National Flag 69
UNIT 21 Community 72
UNIT 22 Holiday 75
UNIT 23 World 78
UNIT 24 Plain 81
Math 86
UNIT 25 Zero 86
UNIT 26 Dollar 89
UNIT 27 Time 92
UNIT 28 Weight 95
Art 100
UNIT 29 Clay 100
UNIT 30 Watercolor Painting 103
Music 108
UNIT 31 Recorder 108
UNIT 32 Musical Chairs 111
Answers 115