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Greenhouse gases emitted into atmosphere are virtually permanent, and because they (i)_________ in the atmosphere, their effects is (ii)_______. These facts necessitate that policies related to greenhouse gases differ from policies related to various pollutants whose effects are (iii)______ and often temporary.
- Blank(i)
- disperse evenly
- accrue gradually
- persist indefinitely
- Blank(ii)
- subtle
- global
- transit
- Blank(iii)
- local
- contrary
- hazardous
disperse evenly , global , local 显示答案
以上解析由 考满分老师提供。
