题目内容：

    As part of his role in the Air Force Volunteer Reserve, John Lewis often visited military schools. But it was at a London school in 2014 that an accident happened. He had 11 operations in total and it was two years before he could walk again.

Although John improved physically, he couldn’t recover from what had happened. John was diagnosed with post -traumatic (创伤后) stress disorder (PTSD), but none of the treatment seemed to help. Then last year, at a hospital, a doctor told him a puppy  (小狗) could manage stress and might help with his anxiety.

In May 2019, they adopted a black puppy called Gibson. He says, “I'd never thought of it as a comfort. After just a few weeks, I could feel myself improving. If I was feeling anxious, he would jump up on the sofa and sit on my chest and I found that really relaxing and comforting. Wherever I go, he will follow me and it’s really helpful to my anxiety. We go out and play Frisbee (飞盘) and I now look forward to going out for walks while I would always make excuses to stay in the house before.”

His wife Anna has also noticed a difference. She says, “Gibson is an incredible dog that adores John. He is a fantastic companion. It has given him a focus and a lease on life.”

John is now. taking part in Generation Pup, a groundbreaking study that tracks puppies through adulthood to learn how their early experiences and environment affect their development. John says, “I really enjoy tracking this through the study, watching his personality begin to grow and support me on my road back to mental health, which he is playing a big part in.” “Gibson has done so much for me in a short space of time. I want to do something for him.”

1.What can we learn about John Lewis after the accident?

A.He couldn't bear the pain of the operations.

B.He soon stood up and returned to his post.

C.He suffered a lot from mental problems.

D.He still focused on the life in military schools.

2.What do John’s words in paragraph 3 show?

A.How to raise a puppy. B.How naughty Gibson was.

C.How to get on with a puppy. D.How Gibson comforted him.

3.What does the underlined part “a lease on life” in paragraph 4 mean?

A.More wisdom. B.Better life.

C.Great wealth. D.Lifelong ambition.

4.What can be inferred from the last paragraph?

A.John is grateful to Gibson. B.John makes full use of Gibson.

C.John has recovered from PTSD. D.John has researched a lot on puppies.