True: We can not see air. , Air is a mixture of gases. , Wind is moving air, Air is all around us. , We can feel air., You can smell the air, The windmill moves with air. , A hurricane is a very strong wind, A breeeze is a gentle wind., False: Air has a fixed shape., Living things don't need oxygen to live., It contains air. , It is clean air. ,

Air

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恢復自動保存: ?