题目内容：

    It is with mixed emotions that I went to the young criminal center every few months to give vaccinations (接种疫苗). On the one hand, I feel lucky to be able to provide a service that may have a positive health effect on the residents. But, on the other hand, I feel a sense of sadness and disappointment as I see the prisoners being escorted (押送) by guards to the nursing unit.

My last visit was very memorable. For some reason, there was a lightness in the air. More than ever before, I felt a lightness as I spoke with each person. We shared stories and smiles and fears. Even the toughest prisoners seemed to be surrounded by light. As a mother, I saw them as not only youth, being punished for crimes, but also as children who have the potential to change for the better. Most of them wanted to talk longer! They were reaching out to us! It felt right.

There was one more prisoner. He was limited to a different unit in a lonely cell. We were asked if we were okay going down there. We said that we were. Two guards escorted us down and when we entered the area, instant tears welled up in my eyes. The area was sad. These guards didn’t smile. We entered the cell and had to make do with what was there.

We were done but I didn’t want to leave. I gave the 17 year old a gentle touch and smile as I explained what to do regarding the side effects. At first, there was no response, so I just looked down at his bare feet and then to my supplies. I thought that I had better pack up. Suddenly, he looked up at me and smiled before he said “Thanks” and then he gave me a thumbs-up. I smiled back and said, “You’re welcome. Take care of yourself.”

It was wonderful to receive a kind response from someone who was in such a harsh place. As we walked back to the main entrance, we didn’t speak. Where there can be a smile, there is hope. Sometimes smiles can be very powerful.

1.What can we know about the young in the young criminal center?

A.They received regular medical service.

B.They were treated unfairly.

C.They stayed in bad conditions.

D.They were forced to take treatment.

2.What was special about the center the last time the author went there?

A.She was asked to share stories. B.Every prisoner was kind to her.

C.The young people talked freely. D.She sensed a relaxing atmosphere.

3.What did the young man think of the author?

A.He disliked her for her sympathy.

B.He really appreciated her kindness.

C.He thought she would change his life.

D.He thought she was just an ordinary doctor.

4.What impressed the author most in this story?

A.The young man’s smile.

B.The medical care for prisoners.

C.The punishment to the prisoners.

D.The difference between the young man and others.