【简答题】Henry Ford was the first person to build cars which were cheap,strong and fast.He was able to sell millions of models because be could produce them in large numbers at a time;that is,he made a great m...
【简答题】In 1883. John Roebling was inspired by an idea to build a spectacular bridge connecting New York with the Long Island. However, bridge building experts throughout the world thought this was an impossi...