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单选题
Efforts to create one of the world’s largest ocean sanctuaries failed because of Russia’s obstruction.
参考答案
C
解析:
[C]
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With several monitoring stations operating in Antarctica, Russia is trying hard to counter America’s dominance in the field of worldwide navigational facilities.
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According to geologists’ estimates. Antarctica has enormous reserves of oil and natural gas.
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It is estimated that Antarctica boasts of the richest reserves of fresh water on earth.
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