单项选择题
A.Who Can Benefit from the Fund. B.Bridging the Gap Between Dreams and Reality. C.How the United Negro College Fund Operates. D.Introduction to an Education Support Organization.
A.Bring up. B.Collect. C.Put on. D.Lift.
A.It directed air at melted iron in a furnace, removing all impurities. B.It slowly heated iron ore then stirred it and heated it again. C.It changed iron ore into iron which was a substitute for steel. D.It could quickly find deposits of iron ore under the ground.