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  3. In 1999, the price of oil hovered around $16 a barrel. By 2008, it had【1】the $100 a barrel mark. The reasons for the surge【2】fro

In 1999, the price of oil hovered around $16 a barrel. By 2008, it had【1】the $100 a barrel mark. The reasons for the surge【2】fro

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问题     In 1999, the price of oil hovered around $16 a barrel. By 2008, it had【1】the $100 a barrel mark. The reasons for the surge【2】from the dramatic growth of the economies of China and India to widespread【3】in oil-producing regions, including Iraq and Nigeria’s delta region. Triple-digit oil prices have【4】the economic and political map of the world,【5】some old notions of power. Oil-rich nations are enjoying historic gains and opportunities,【6】major importers — including China and India, home to a third of the world’s population—【7】rising economic and social costs.
    Managing this new order is fast becoming a central【8】of global politics. Countries that need oil are clawing at each other to【9】scarce supplies, and are willing to deal with any government,【10】how unpleasant, to do it.
    In many poor nations with oil, the profits are being lost to corruption, 【11】these countries of their best hope for development. And oil is fueling enormous investment funds run by foreign government, 【12】some in the West see as a new threat.
    Countries like Russia, Venezula and Iran are well supplied with rising oil【13】. a charge reflected in newly aggressive foreign policies. But some unexpected countries are reaping benefits, 【14】costs, from higher prices. Consider Germany,【15】it imports virtually all its oil, it has prospered from extensive trade with a booming Russia and the Middle East. German exports to Russia【16】128 percent from 2001 to 2006.
    In the United States, as already high gas prices rose【17】higher in the spring of 2008, the issue cropped up in the presidential campaign, with Senator McCain and Obama【18】for a federal gas tax holiday during the peak summer driving months. And driving habits began to【19】. as sales of small cars jumped and mass transport systems【20】the country reported a sharp increase in riders.
【3】
选项 A、intensity
B、infinity
C、insecurity
D、instability
答案D
解析 词汇题(词义选择)。本题所在句子是要表述油价上涨的原因，我们清楚地看到第一个原因是经济的发展，空格中是第二个原因，根据空格之后已有的“石油生产地区的……”的线索我们不难判断空格中需要一个名词表达“动荡”或与之近义的词汇。A项intensity“强烈，强度”、B项infinity“无限，无穷”、和C项insecurity“担心：不安全感”均不符合句意，所以只有D项instability“不稳定”符合题意，为正确选项。
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