单项选择题

Which of the following environmental problems is the article talking about

A．Acid rain.
B．Ozone depletion.
C．Deforestation.
D．The greenhouse effect.
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单项选择题
How much of American GNP comes from sectors that are affected by climate change
A．3%.
B．10%.
C．87%.
D．13%.
单项选择题
In industrialized countries, what businesses are scarcely affected by climate change
A．Water systems.
B．Energy and property.
C．Services.
D．Coastal activities.
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