| 如何使用本书 Cultures and Customs Unit 1 Groundhog Day土拨鼠日 Unit 2 Ramadan斋月 Animals and Plants Unit 3 Trees树 Unit 4 Shells贝壳 General Knowledge Unit 5 Human Beings人类 Unit 6 Units of Measurement计量单位 Language and Literature Unit 7 Novels小说 Unit 8 The Knights of the Round Table圆桌骑士 Science Unit 9 Genes and DNA基因和DNA Unit 10 The Solar System太阳系 Famous People and Events Sports and Art Media and Technology The Earth and the Environment History 答案 词汇表 |
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