简述奶牛利用NPN饲料时应该注意的问题？

Henry Ford was the first person to build cars which were cheap，strong and fast．He was able to se11 millions of models because he could produce them in large numbers at a time；that is，he made a great many cars of exactly the same kind． Ford’s father hoped that his son would become a farmer，but the young man did not like the idea and he went to Detroit（底特律）where he worked as a mechanic（机械师）．By the age of 29，in 1892，he had built his first car．However，the car made in this way，the famous “Model T” did not appear until 1908-----five years after Ford had started his great motor car factory．This car showed to be so well-known that it remained unchanged for twenty years．Since Ford’s time，this way of producing cars in large numbers has become common in industry and has reduced the price of many goods which would otherwise be very expensive．

小题1:Henry Ford was the man to built _____ cars．

A．cheap and strong

B．cheap and long

C．fast and expensive

D．strong and slow小题2:Ford was able to sell millions of cars，because_____．

A．he made many great cars

B．his cars are many

C．he made lots of cars of the same kind

D．both A and B小题3:The young man became a mechanic，_______．

A．which was his father’s will

B．which was against his own will

C．which was against his father’s will

D．which was the will of both小题4:The “Model T” was very famous_____．

A．before 1908

B．between 1982 and 1908

C．before 1892

D．after 1908小题5:Ford built his own car factory_____?

A．in 1903

B．in 1908

C．in 1913

D．in 1897