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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 governments,【12】some in the west see as a new threat.
    Countries like Russia, Venezuela and Iran are well supplied with rising oil【13】, a change 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 Senators 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.
选项 A、intensity
B、infinity
C、insecurity
D、instability
答案D
解析 语义衔接题。根据常识可知，油价的上涨无非有两个原因。第一是需求的增加；第二是供应的减少。本题提到了造成供应减少的原因。我们知道，伊拉克地区是世界石油主产区之一，由于伊拉克战争造成当地局势动荡，从而石油减产。所以，[D]instability“不稳定”符合题意。[A]intensity“剧烈，强烈”；[B]infinity“无限的时间或空间”；[C]insecurity“不安全”，在描述一个地区的局势时，一般不用“不安全”，而且insecurity只是instability带来的后果之一。
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