单项选择题
A．the causes for his successes B．some of his failures C．another part of his personality D．why he was left behind the modem competition
A．products should be made with less cost but higher efficiency B．products should be sold at low prices in large quantity C．products should be sold at high prices in large quantity D．standards must be established in his plants
A．Henry Ford changed American society with his invention of cars. B．Henry Ford had a personality different from ordinary people. C．Henry Ford was one of the greatest American industrialists. D．Henry Ford built the first assembly line in the worl