Henry went to London for a holiday.
One day he was not feeling well，so he went to the clerk（接待员）
at the desk of his hotel and said，"I want to see a doctor.Can you give me the name of a good one？"
The cieric looked in a book and then said，"Dr Jack Grey，61010."
Henry said，"Thank you very much.Is it expensive？"
"Well，"the clerk answered，"he always chames（收费）his patients
（病人）two pounds for their first visit to him，and only one pound for later visit."
Henry decided to save one pound，so when he went to see the doctor，he said，"I've come again，doctor."
For a few seconds the doctor looked at his face carefully without saying.Then he nodded and said，“Oh，Yes."He examined him and then said，"Everythingis going as it should do.Just continue（继续）with the medicine I gave you last time."