Reading Comprehension(阅读理解)：

Henry Ford was the first one to build cars. The cars were fast, cheap and reliable. He was able to sell millions of them because he “mass-produced” them, that is, he made a great many cars of the same type. Henry Ford's father had hoped that his son would become a farmer, but the young man did not like the idea and went to Detroit. He worked there as a mechanic. By the time he was twenty-nine, in 1892, he had built his first car. The first mass-produced car in the world, the famous “Model T”, appeared in 1908－five years after Herry had started in his great Ford Company. This car was so popular that it could be unchanged for twenty years. Since Henry Ford's time, mass-produced techniques have become common in industry and have made a great many products cheaper than ever.

Complete the answer to each question(根据短文内容完成下列问题)：

1．Who invented cars?

________ invented cars.

2．What did his father want him to be?

His father wanted him to be ________.

3．How old was he when his first car was built?

He was ________.

4．In which year did he start in his great company?

He started in his great company ________.

5．Why could “Model T” be unchanged for twenty years?

Because it was very ________.

6．How long have mass-produced techniques become common in industry?

________.