US retail prices for petrol have fallen about half compared with last summer, which traders expect to bolster consumption. Nymex June RBOB unleaded gasoline rose 4.6 cents to $1.8587 a gallon.

• 美国汽油零售价格与去年夏天相比大致减半，交易商预期这将提振消费。纽约商交所6月份RBOB无铅汽油期货价格收高4.；6美分，报每加仑1