单项选择题A.we lose a day.B.we add 24 hours.C.we gain 12 hours.D.we add an extra month.
单项选择题A.blue.B.green.C.white.D.red.
单项选择题A.34%.B.41%.C.17%.D.8%.
单项选择题A.more relative depravity.B.more relative depression.C.more relative deprivation.D.more relative degradation.
单项选择题A.355.B.366.C.365.D.445.