Directions：
Read the following text. Choose the best word (s) for each numbered blank and mark A, B, C or D. 

     In 1999, the price of oil hovered around $16 a barrel. By 2008, it had  the $100 a barrel mark. The reasons for the surgefrom the dramatic growth of the economies of china and India to widespread  in oil-producing regions, including Iraq and Nigeria's delta region. Triple-digit oil prices have  the economic and political map of the world, some old notions of power. Oil-rich nations are enjoying historic gains and opportunities,  major importers—including china and India, home to a third of the world's population--  rising economic and social costs. Managing this new order is fast becoming a central of global politics. Countries that need oil are clawing at each other to  scarce supplies, and are willing to deal with any government,  how unpleasant, to do it .
     In many poor nations with oil , the profits are being ,lost to corruption, these countries of their best hope for development. And oil is fueling enormous investment funds run by foreign governments,  some in the west see as a new threat.
Countries like Russia, Venezuela and Iran are well supplied with rising oil  , a change reflected in newly aggressive foreign policies. But some unexpected countries are reaping benefits,  costs, from higher prices. Consider Germany.  it imports virtually all its oil, it has prospered from extensive trade with a booming Russia and the Middle East. German exports to Russia 128 percent from 2001 to 2006.
     In the United States, as already high gas prices rose  higher in the spring of 2008, the issue cropped up in the presidential campaign, with Senators McCain and Obama  for a federal gas tax holiday during the peak summer driving months. And driving habits began to  , as sales of small cars jumped and mass transport systems  the country reported a sharp increase in riders.