[International oil prices rose significantly on the 28th] As of the close of trading that day, the price of light sweet crude oil futures for June delivery on the New York Mercantile Exchange rose by $3.56 to settle at $99.93 per barrel, an increase of 3.69%; the price of Brent crude oil futures for June delivery on the London ICE Futures Exchange rose by $3.03 to settle at $111.26 per barrel, an increase of 2.80%.