单项选择题A.Husbands have to sham power with their wives and help them with the housework.B.Older women do not often have important positions in a large group and often live alone when their husbands die.C.Family structure is more patriarchal in the nuclear family.D.Women have to help sisters, grandparents with housework and childcare.
单项选择题A.Lightning and thunder.B.A great deal of water vapor and a rapidly rising air current.C.Warm air and cold air.D.A great amount of vapor and electricity.