This passage is mainly about how the development of airline industry has affecte

游客2023-07-31  28

问题 This passage is mainly about how the development of airline industry has affected the environment through its greenhouse gases emission. [br] ______as a whole was judged to be responsible for about a quarter of the world’s carbon dioxide discharges.

选项

答案 Transport

解析 在第三部分Counting the cost第一段明确提到了答案。
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