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【单选题】
有的地质学家认为，如果地球的未勘探地区中单位面积的平均石油储藏量能和已勘探地区一样的话，那么，目前关于地下未开采的能源含量的正确估计因此要乘上1万倍。如果地质学家的这一观点成立，那么，我们可以得出结论：即使未来的石油消耗量加速增长，我们至少可以再满足5个世纪整个世界石油的需求。为得出上述结论，必须假设下面哪一项成立（）
A.
人们有可能在未开发地区发现石油
B.
地球上未勘探地区的总面积是已勘探地区的约1万倍
C.
未来的石油消耗量不会迅速增长
D.
未开发地区的石油储藏量能和已勘探地区一样得到有效的勘探和开采
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China and Russia are going to build hi-tech parks.
B.
The U.S, and China issued a joint statement on economic and financial issues.
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