题目内容：
根据以下材料，回答题①Oil is the substance that lubricates the world's economy. Because so many of our moderntechnologies and services depend on oil, nations, corporations, and institutions that control thetrade in oil exercise extraordinary power.
②The "energy crisis" of 1973--1974 in the United States demonstrated how the price of oilcan affect U.S. government policies and the energy-using habits of the nation.
③By 1973, domestic U.S. sources of oil were peaking, and the nation was importing moreof its oil, depending on a constant flow from abroad to keep cars on the road and machinesrunning. In addition, at that time a greater percentage of homes and electrical plants were run onpetroleum than today.
④Then, in 1973, the predominant Arab nations of the Organization of Petroleum ExportingCountries (OPEC) resolved to stop selling oil to the United States. The move was prompted byOPEC's desire to raise prices by restricting supply and by its opposition to U.S. support of Israelin the Arab-Israeli Yom Kippur War. The embargo (禁运) created panic in the West and causedoil prices to shoot up. Short-term oil shortages drove American consumers to wait in long lines atgas pumps.
⑤In response to the embargo, the U.S. government enforced a series of policies designed toreduce reliance on foreign oil. These included developing additional domestic sources (such asthose on Alaska's North Slope), resuming extraction at sites that had been shut down because ofcost inefficiency, capping the price that domestic producers could charge for oil, and beginning toimport oil from a greater diversity of nations. The government also established a stockpile (贮存)of oil as a short-term buffer (缓冲) against future shortages. Stored underground in large saltcaves in Louisiana, this stockpile is called the Strategic Petroleum Reserve, and currently containsover 600 million barrels of oil, roughly equivalent to one month's supply.
Paragraph①_______ A．The U.S. Took Measures to Reduce Oil Import
B．Importance of Oil
C．Energy Conjuncture of Oil
D．The U.S. Needs More Oil
E．The OPEC Decided to Reduce Oil Supply to the U. S.
F．The Oil Relation Between U.S. and OPEC
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