The same day, the European is still the the focus of is one of the market's of concern. The previous trading day, the international rating agency Fitch lowered Greece's sovereign debt rating. Greek political instability, economic weakness and again downgrade the risk exacerbate the concerns of investors in Greece may withdraw from the euro zone. Members of the European Commission responsible for trade, also said the same day, the EU is to develop an emergency plan of the Greek out of the euro. The the message aggravate the market selling pressure. 

In addition, the Spanish banking system is in trouble. Ban Nokia, Spain's fourth-largest bank, Bank within a week suffered depositor payment of one billion euros. Moody's Investors Service on the 17th, down 16 Spanish bank ratings, the Spanish banking system's health is worrying. The analysts believe that European issues continue to risk aversion among investors sentiment, lack of confidence led to the fall in oil prices. In In addition, the the the Group of Eight is about to be held Yu this weekend meetings, how to deal with that the the European debt crisis will be yes the the main topics. Analysts say that investors take caution before the meeting, the buying pressure. 

The same time, the economic data recently published by the United States is not satisfactory, coupled with investors worried about China's economic slowdown, let the market pressure. 

To the closing, the New York Mercantile Exchange, light sweet crude for June delivery fell $ 1.08 to close at $ 91.48 a barrel, down 0.27 percent, the lowest closing price since October last year. The week, New York oil prices fell $ 4.65, down 4.84 percent. 

July Brent crude futures fell 35 cents to close at $ 107.14 a barrel, the week down $ 5.12, down 4.56 percent. (Rotation)