Introduction
How to Use This Book
Chapter 1 Social Studies ★ History and Geography ① | 9
Unit 01 Building Citizenship 建立公民权 | 10
Unit 02 Moving to a New Community 移居新国家 | 14
Unit 03 Lots of Jobs 各种工作 | 18
Unit 04 The Geography of the United States 美国的地理环境 | 22
Unit 05 American Federal and Local Governments 美国联邦政府与地方政府 | 26
Review Test 1 | 30
Chapter 2 Social Studies ★ History and Geography ② | 31
Unit 06 Native Americans and Their Culture 印第安人与印第安文化 | 32
Unit 07 The Early Americans 早期的美国人 | 36
Unit 08 The Europeans Come to the New World 欧洲人来到新大陆 | 40
Unit 09 The English Come to America 英国人来到美洲 | 44
Unit 10 American Independence 美国独立 | 48
Review Test 2 | 52
Chapter 3 Science ① | 53
Unit 11 Living and Nonliving Things 生物与非生物 | 54
Unit 12 Kinds of Animals 动物的种类 | 58
Unit 13 The Life Cycle of an Animal 动物的生命周期 | 62
Unit 14 Plants 植物 | 66
Unit 15 The Food Chain 食物链 | 70
Review Test 3 | 74
Chapter 4 Science ② | 75
Unit 16 昆虫 | 76
Unit 17 The Solar System 太阳系 | 80
Unit 18 The Human Body 人体 | 84
Unit 19 Motion and Forces 运动与力 | 88
Unit 20 Sound 声音 | 92
Review Test 4 | 96
Chapter 5 Mathematics | 97
Unit 21 Numbers from 1 to 100 数字：从1到100 | 98
Unit 22 Time 时间 | 102
Unit 23 Solid Figures and Plane Figures 立体图形与平面图形 | 106
Unit 24 Multiplication and Division 乘法与除法 | 110
Review Test 5 | 114
Chapter 6 Language ★ Visual Arts ★ Music | 115
Unit 25 Learning About Language 如何学习语言 | 116
Unit 26 Familiar Sayings 常见格言与谚语 | 120
Unit 27 Visual Arts 视觉艺术 | 124
Unit 28 Architecture 建筑学 | 128
Unit 29 Many Kinds of Music 音乐的种类 | 132
Unit 30 Musical Instruments 乐器 | 136
Review Test 6 | 140
Index | 141
Answers and Translations | 147
