外研版高中英语选择性必修第二册Unit 6 Survival Part 1 Starting out,Understanding ideas,Using language课件

Unit 6 Survival [头脑风暴·思维发散] 　　We must commit to reducing our consumption of natural resources,as it is crucial for the sustainable development of our planet.While some may consider this task to be very challenging,we appreciate the optimism shown by those who strive for change.Restricting unneces...