unit 5 global warming E1Version en ligne review par huynhthingocthao2309@gmail.com 1 What is the main topic of their talk? a today's lesson b global warming 2 How do people produce gases in the air? a By burning fuels b By recycling waste 3 What do greenhouse gases do? a They trap the sun’s heat b They release the heat 4 What are the consequences of global warming? a Build more high-tech facilities b Harm to the environment and people
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