2. 外语
  3. This passage is mainly about how the development of airline industry has affected the environment through its greenhouse gases e

This passage is mainly about how the development of airline industry has affected the environment through its greenhouse gases e

admin2009-09-12  39
问题 This passage is mainly about how the development of airline industry has affected the environment through its greenhouse gases emission.
Many airlines are having less profit today although there are more demand for air travel.
选项 A、Y
B、N
C、NG
答案A
解析 根据Frequent traveler，free rider部分的第一段信息可以判断此题符合文章的内容。
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大学英语四级

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