摘要
Oil prices have collapsed over the last several months,and some analysts say they could go even lower.What’s behind the plunge1in oil prices？A variety of factors have coalesced2into a perfect storm driving oil prices lower and lower：US prices have fallen 25 percent to around$80 a barrel—a large drop,given that prices had been floating3around$115 dollars a barrel from 2011 onward.
出处
《大学英语》
2015年第5期14-16,共3页
College English
