目录 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 Insects 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
以下为对购买帮助不大的评价