单项选择题
A. They are not useful. B. They foster unnecessary competition. C. They should be optional. D. They are currently in use.
A. Hardly ever. B. No wonder you look so well. C. Follow my advice. D. I’m sure. E. Do you want to go with me F. Right on! G. Have a nice day. H. That’s too bad.
A. Henry Ford always tried to avoid waste B. Henry Ford required total observation once the standards were established C. Henry Ford always encouraged his workers to make changes oft he products D. Henry Ford made his own designs of his cars