In 1999, the price of oil hovered around $ 16 a barrel. By 2008, it had【C1】______the $ 100 a barrel mark. The reasons for the su

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问题     In 1999, the price of oil hovered around $ 16 a barrel. By 2008, it had【C1】______the $ 100 a barrel mark. The reasons for the surge【C2】______from the dramatic growth of the economies of China and India to widespread【C3】______in oil-producing regions, including Iraq and Nigeria’s delta region. Triple-digit oil prices have【C4】______the economic and political map of the world, 【C5】______some old notions of power. Oil-rich nations are enjoying historic gains and opportunities, 【C6】______major importers — including China and India, home to a third of the world’s population —【C7】______rising economic and social costs.
    Managing this new order is fast becoming a central【C8】______of global politics. Countries that need oil are clawing at each other to【C9】______scarce supplies, and are willing to deal with any government, 【C10】______how unpleasant, to do it.
    In many poor nations with oil, the profits are being, lost to corruption, 【C11】______these countries of their best hope for development. And oil is fueling enormous investment funds run by foreign governments, 【C12】______some in the west see as a new threat.
    Countries like Russia, Venezuela and Iran are well supplied with rising oil【C13】______a change reflected in newly aggressive foreign policies. But some unexpected countries are reaping benefits, 【C14】______costs, from higher prices. Consider Germany. 【C15】______it imports virtually all its oil, it has prospered from extensive trade with a booming Russia and the Middle East. German exports to Russia【C16】______128 percent from 2001 to 2006.
    In the United States, as already high gas prices rose【C17】______higher in the spring of 2008, the issue cropped up in the presidential campaign, with Senators McCain and Obama【C18】______for a federal gas tax holiday during the peak summer driving months. And driving habits began to【C19】______as sales of small cars jumped and mass transport systems【C20】______the country reported a sharp increase in riders.
【C12】

选项 A、what
B、that
C、which
D、whom

答案C

解析 结构衔接题。本空所需词是一个引导定语从句的关系词。所给四个选项中,此处只有[C]which能够引导非限制性定语从句,且指代前面整个句子。
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