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Introduction

How to Use This Book

Chapter 1 Social Studies ¡ï History and Geography ¢Ù | 9

Unit 01 Building Citizenship ½¨Á¢¹«ÃñȨ | 10

Unit 02 Moving to a New Community ÒƾÓйú¼Ò | 14

Unit 03 Lots of Jobs ¸÷ÖÖ¹¤×÷ | 18

Unit 04 The Geography of the United States ÃÀ¹úµÄµØÀí»·¾³ | 22

Unit 05 American Federal and Local Governments ÃÀ¹úÁª°îÕþ¸®ÓëµØ·½Õþ¸® | 26

Review Test 1 | 30

Chapter 2 Social Studies ¡ï History and Geography ¢Ú | 31

Unit 06 Native Americans and Their Culture Ó¡µÚ°²ÈËÓëÓ¡µÚ°²ÎÄ»¯ | 32

Unit 07 The Early Americans ÔçÆÚµÄÃÀ¹úÈË | 36

Unit 08 The Europeans Come to the New World Å·ÖÞÈËÀ´µ½Ð´ó½ | 40

Unit 09 The English Come to America Ó¢¹úÈËÀ´µ½ÃÀÖÞ | 44

Unit 10 American Independence ÃÀ¹ú¶ÀÁ¢ | 48

Review Test 2 | 52

Chapter 3 Science ¢Ù | 53

Unit 11 Living and Nonliving Things ÉúÎïÓë·ÇÉúÎï | 54

Unit 12 Kinds of Animals ¶¯ÎïµÄÖÖÀà | 58

Unit 13 The Life Cycle of an Animal ¶¯ÎïµÄÉúÃüÖÜÆÚ | 62

Unit 14 Plants Ö²Îï | 66

Unit 15 The Food Chain ʳÎïÁ´ | 70

Review Test 3 | 74

Chapter 4 Science ¢Ú | 75

Unit 16 Insects À¥³æ | 76

Unit 17 The Solar System Ì«Ñôϵ | 80

Unit 18 The Human Body ÈËÌå | 84

Unit 19 Motion and Forces Ô˶¯ÓëÁ¦ | 88

Unit 20 Sound ÉùÒô | 92

Review Test 4 | 96

Chapter 5 Mathematics | 97

Unit 21 Numbers from 1 to 100 Êý×Ö£º´Ó1µ½100 | 98

Unit 22 Time ʱ¼ä | 102

Unit 23 Solid Figures and Plane Figures Á¢ÌåͼÐÎÓëƽÃæͼÐÎ | 106

Unit 24 Multiplication and Division ³Ë·¨Óë³ý·¨ | 110

Review Test 5 | 114

Chapter 6 Language ¡ï Visual Arts ¡ï Music | 115

Unit 25 Learning About Language ÈçºÎѧϰÓïÑÔ | 116

Unit 26 Familiar Sayings ³£¼û¸ñÑÔÓëÑèÓï | 120

Unit 27 Visual Arts ÊÓ¾õÒÕÊõ | 124

Unit 28 Architecture ½¨Öþѧ | 128

Unit 29 Many Kinds of Music ÒôÀÖµÄÖÖÀà | 132

Unit 30 Musical Instruments ÀÖÆ÷ | 136

Review Test 6 | 140

Index | 141

Answers and Translations | 147