400 billion USD of the 1-trillion-USD-a-year tourism revenue is generated by the

游客2023-12-28  22

问题 400 billion USD of the 1-trillion-USD-a-year tourism revenue is generated by the airline industry, which transports more than three billion passengers a year.

选项 A、正确
B、错误

答案 B

解析 航空业每年运送旅客的数量是20亿,不是30亿,故False。
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