More than half of ski slopes in France - including in the Alps - have been forced to close due to unseasonably mild weather and rain, making for a disappointing ski season.Shocking footage taken at the Morzine ski resort in the French Alps shows skiers on the slopes making do with grass and very little, slushy snow.Bastien Moyon, 18, a skier who was in Morzine last weekend, said: "This year is the first time I've seen it like this. It's pretty impressive actually. I've never seen rain like this."The difficult conditions come just days before the skiing World Cup, set to start next Saturday in Adelboden, Switzerland, drawing thousands of fans.SWNS