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 CO2 concentrations
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单项选择题
A．The man should try to be more understanding.B．The man’s wife should be more understanding.C．The man’s negative attitude may be derived from his childhood.D．The pessimism of man’s wife may be the result of her past experiences.
A．The man should try to be more understanding.
B．The man’s wife should be more understanding.
C．The man’s negative attitude may be derived from his childhood.
D．The pessimism of man’s wife may be the result of her past experiences.
填空题
The US Bush administration says the scientific uncertainty over the pace of climate change is causes for______.
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