题目内容
（请给出正确答案）
[主观题]
How have we reduced the production of CO2 emissions？
A、We have stopped driving cars.
B、We do not burn so much fossil fuel.
C、We have reduced 80% of the cars on the roads.
提问人：网友guojingcha
发布时间：2022-01-07
题目内容
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