单项选择题

The text is mainly about ______.

A．rapid changes in earth's temperature
B．bad effects of global warming
C．moving of a country to a new place
D．reasons for lowland flooding
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单项选择题
Laupepa was not satisfied with the United States because it did not ______.
A．agree to sign an agreement to reduce its greenhouse gas emissions
B．sign an agreement with Tuvalu
C．allow Tuvaluans to move to the US
D．believe the problems facing Tuvalu were real
单项选择题
According to scientists, the DIRECT cause of more and fiercer storms is ______.
A．greenhouse gas emissions in industrialized nations
B．higher surface water temperatures of the sea
C．continuous global warming
D．rising sea levels
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