One of the greatest breakthroughs for professional women came in 1973 when the field of banking opened up for them.
A、mostseriousdisappointmentsB
暂无解析
TheSalkvaccineisamajorfactorinthefighttoeradicatepolio.
Some children display an unquenchable 难以抑制的 curiosity about every new thing they encounter.
Despitetheproliferationofotherfastermodesoftransportation,therailroadsremainthelargestcarriersofintercityfreightintheUnitedStates.
The wheels of the first road vehicles were fashioned from crude stone disks.
Thefirstpaperwasmadefromthebarkofthemulberrytree.
