单项选择题

If the percentage of carbon dioxide in the air continues to increase at current rates ______.

A．average daily temperatures worldwide could increase considerably
B．some sea level islands could be threatened by flooding
C．all coastal regions throughout the world could be at serious risk
D．all of the above
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单项选择题
Why does the author give his opinion of the definition of poetry
A．He doesn't want his readers to be confused
B．He wants to get to his point and not discuss definitions
C．Many people have tried to define it, and he wanted to add another by giving his point of view
D．He doesn't think the other definitions are accurate
单项选择题
The purpose of the passage is to ______.
A．explain the meaning of poetry and the art of a poet
B．contrast poetry with a democratic and a aristocratic societies
C．explain how poetry, democracy, and aristocracy intermingle
D．contrast the inclination towards poetry in democratic and aristocratic societies
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