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题目内容
（伊犁师范-英语阅读1）
According to the passage, about a fifth of the world’ s greenhouse gas emissions arecaused by0.
A . various plants and animals on the Earth
B . the world’s tropical rainforests
C . the destruction of the Earth. s ecosystems
D . the ever-increasing population in the world
A . various plants and animals on the Earth
B . the world’s tropical rainforests
C . the destruction of the Earth. s ecosystems
D . the ever-increasing population in the world
参考答案