根据本课程内容,生产效率是指一定的投入所产生的有效成果()
参考答案:错误
Which of the following can best summarize the authors view?
A. Where there is a will, there is a way.
B. There is no such thing as a free lunch.
C. Nothing in the world is difficult.
Diligence is more important than talent.
Once the prison during the 16th and 17th, ______ is now one of the British most popular tourist attractions.
A. The Tower of London
B. The Big Ben
C. The Stonehenge
D. Westminster Abbey