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Introduction How to Use This Book Chapter 1 Social Studies History and Geography ¢Ù | 9 Unit 01 Economics ¾­¼Ãѧ | 10 Unit 02 World Geography ÊÀ½çµØÀí | 14 Unit 03 Asian Civilizations ÑÇÖÞÎÄÃ÷ | 18 Unit 04 Ancient Greek and Roman Civilizations ¹ÅÏ£À°ÓëÂÞÂíÎÄÃ÷ | 22 Review Test 1 | 26 Chapter 2 Social Studies History and Geography ¢Ú | 27 Unit 05 From the Middle Ages to the Reformation ´ÓÖÐÊÀ¼Íµ½×ڽ̸ĸï | 28 Unit 06 The Enlightenment and the French Revolution ÆôÃÉÔ˶¯Óë·¨¹ú´ó¸ïÃü | 32 Unit 07 Imperialism µÛ¹úÖ÷Òå | 36 Unit 08 World War II and after the War µÚ¶þ´ÎÊÀ½ç´óÕ½ÓëÕ½ºó | 40 Review Test 2 | 44 Chapter 3 Science ¢Ù | 45 Unit 09 Classifying Living Things ÉúÎïµÄ·ÖÀà | 46 Unit 10 Cells and Heredity ϸ°ûÓëÒÅ´« | 50 Unit 11 Plant Growth Ö²ÎïµÄÉú³¤ | 54 Unit 12 Ecosystems Éú̬ϵͳ | 58 Unit 13 The Human Body and the Immune System ÈËÌåÓëÃâÒßϵͳ | 62 Review Test 3 | 66 Chapter 4 Science ¢Ú | 67 Unit 14 Earth's Surface µØÇò±íÃæ | 68 Unit 15 Earth's Rocks and Fossils µØÇòµÄÑÒʯÓ뻯ʯ | 72 Unit 16 Oceans and Ocean Life º£ÑóÓ뺣ÑóÉúÎï | 76 Unit 17 Matter ÎïÖÊ | 80 Unit 18 Light and Energy ¹âÓëÄÜÁ¿ | 84 Review Test 4 | 88 Chapter 5 Mathematics | 89 Unit 19 Numbers and Computation Êý×ÖÓë¼ÆËã | 90 Unit 20 Probability and Statistics ¸ÅÂÊÓëͳ¼Æ | 94 Unit 21 Measurement ²âÁ¿ | 98 Unit 22 Geometry ¼¸ºÎѧ | 102 Review Test 5 | 106 Chapter 6 Language Visual Arts Music | 107 Unit 23 Poetry and Stories Ê«¸èÓë¹ÊÊ | 108 Unit 24 Grammar and Usage Óï·¨ÓëÓ÷¨ | 112 Unit 25 Common English Sayings and Expressions ³£¼ûÓ¢ÎÄÑèÓïºÍ±í´ï·½Ê½ | 116 Unit 26 Classical Art ¹ÅµäÒÕÊõ | 120 Unit 27 From Baroque Art to Realism ´Ó°ÍÂå¿ËÒÕÊõµ½Ð´ÊµÖ÷Òå | 124 Unit 28 A World of Music ÒôÀÖµÄÊÀ½ç | 128 Review Test 6 | 132 Index | 133 Answers and Translations | 139