单项选择题
A．he created wealth for them B．he made cars with all kinds of colors C．his mass production was able to bring the price down D．he produced a gasoline engine as the power for his cars
A．he called her "The Believer" B．her belief in him was a constant encouragement C．from the earliest days of their relationship, she always encouraged her husband to build a horseless carriage D．she often reminded her husband that the way to make automobiles is to make them all alike
A．his wife’s encouragement B．a lot of money to buy equipment C．engineers and technicians D．to produce a gasoline engine that would be the power for his car