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  38
问题 This passage is mainly about how the development of airline industry has affected the environment through its greenhouse gases emission.
Although aviation accounts for only 3% of the total man-made emission, its______ are believed to be disproportionately damaging to the environment.
选项
答案high-altitude emissions
解析 答案在第三部分第二段开头。
转载请注明原文地址:https://kaotiyun.com/show/1g37777K
0

大学英语四级

相关试题推荐
随机试题
最新回复(0)