Answer:
1, explain the outline of the story, attract people's attention and announce the main idea.
2. Explain the social background. At that time, during the Great Depression, many people had no jobs. The hostess is all thumbs, and the story develops.
3, time will forget everything, dropping the ring is just a small mistake and will not be fired; If you lose a valuable diamond ring, you will definitely lose your job. If it is serious, you may be detained. Family accommodation will become a serious problem, and the future is unimaginable.
There is a standard answer: I slowly turned around and put the sixth ring in my hand back.
Or I slowly turned around and approached the counter and put the sixth ring in my hand back on the plate.
The original text of P.S. is English, and the translation is very poor. Personally, the first answer may not be appropriate. Please refer to other answers.