【目录】: Unit 1 Festivals around the world Period 1 Warming up and reading Period 2 Discovering useful structures Period 3 Using language Period 4 Exercises Unit 2 Healthy eating Period 1 Warming up and reading Period 2 Discovering useful structures Period 3 Using language Period 4 Exercises Unit 3 The Million Pound Bank Note Period 1 Warming up and reading Period 2 Discovering useful structures Period 3 Using language Period 4 Exercises Unit 4 Astronomy: the science of the stars Period 1 Warming up and reading Period 2 Discovering useful structures Period 3 Using language Period 4 Exercises Unit 5 Canadan-"The True North" Period 1 Warming up and reading Period 2 Discovering useful structures Period 3 Using language Period 4 Exercises 参考文献
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