填空题

No matter what the methods we use, the final result is that we will need to decrease CO₂ emissions by 70% to 80% simply to stabilize______.

【参考答案】

atmospheric CO_{2_{concentrations
由题干中的定位词CO_{2......

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The US Bush administration says the scientific uncertainty over the pace of climate change is causes for______.

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Human activity could bring about melting of the ______ in this century.

No matter what the methods we use, the final result is that we will need to decrease CO2 emissions by 70% to 80% simply to stabilize______.