表达式dict(zip(range(10,0,-2),range(0,10,2)))的值，不可能是以下哪一项？（ ）
{0: 10, 4: 6, 2: 8, 6: 4, 8: 2}
{10: 0, 4: 6, 2: 8, 6: 4, 8: 2}
{8: 2, 10: 0, 4: 6, 2: 8, 6: 4}
{4: 6, 2: 8, 6: 4, 8: 2, 10: 0}