单项选择题

What is the author's attitude towards global warming theory

A．Negative.
B．Indifferent.
C．Favorable.
D．Neutral.
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单项选择题
What does this passage mainly deal with
A．The tendency of earth's becoming hotter.
B．The assessment of earth's temperature.
C．The menace of global warming.
D．The measurement of tackling global warming.
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