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A．A panel.B．Europe.C．A blueprint.D．The Atlantic communi……

What does "it" in the first sentence of Para. 2 refer to

A．A panel.
B．Europe.
C．A blueprint.
D．The Atlantic community.
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单项选择题Why does the author think it necessary to heed the demographic changes in Europe and America

A．Because these changes are threatening the partnership between Europe and America.
B．Because these changes lead Europe to adopt its own economic and political policies.
C．Because these changes are more important than war and protectionism issues.
D．Because theses changes are domestic.