题目

During the early 1980S，I was a sales manager for a large training company. One of my responsibilities was to train people on how to sell My mother lived near me for nearly 30 years，who has just had a third-grade education. The popula­tion in our area grew sufficiently and the committee members think about building a new church in our neighborhood. They decided to raise the initial capital by selling lottery (彩票）tickets. My mother jumped at the chance to participate. She had no formal training in the art of selling，but that never en­tered her mind. Her plan was simple: talk310÷34=2(    )=(    )10=4040%=2020：50．