__________（48）A.However Nordic nations all reject
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__________（48）
A.However,Nordic nations all reject it by claiming that their countries are his home.
B.Therefore the North Pole is the most attractive place in the world.
C.If Denmark’s claim were accepted internationally,it would have the legal right to search for oil and gas at the North Pole.
D.One of them would be building a giant floating ice rink for the workshop if the Pole thaws.
E.Maybe Father Christmas has already moved to Rovaniemi.
F.He may have to move from the North Pole within one children’s lifetimes.
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答案：D
由第三段前两句可知该空的内容应该涉及具体的拯救办法。选项D符合这个要求。选项D说其中一个办法是：如果北极的冰融化，就造一个巨大的浮冰场地，上面可以承载圣诞老人的工场。从句意连接以及one of them（指代前一句的ways）的用词上，都可以确定选项D是正确答案。