问题
名词解释
移植排斥反应(transplant rejection reaction)
答案
参考答案：
在同种异体组织、器官移植时，受体的免疫系统会针对移植物中的人类主要组织相容性抗原HLA，发生细胞和抗体介导的多种免疫损伤、对移植物产生排斥反应，有时移植物对受者亦可产生排斥反应。
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移植排斥反应(transplant rejection reaction)
参考答案：
在同种异体组织、器官移植时，受体的免疫系统会针对移植物中的人类主要组织相容性抗原HLA，发生细胞和抗体介导的多种免疫损伤、对移植物产生排斥反应，有时移植物对受者亦可产生排斥反应。
| 阅读理解。 |
| Mr. Brown was the manager (经理) of an office in London. He lived in the country and came up to work by train. He liked walking from the station to his office unless it was raining, because it gave him some exercise. One morning he was walking along the street when a stranger stopped him and said to him. "You may not remember me, sir, but seven years ago I came to London without a penny in my pockets. I stopped you in the street and asked you to lend me some money, and you gave me five pounds, because you said that you were willing to take a chance so as to (为了) give a man start on the road to success." Mr. Brown thought for a few minutes and then said, "Yes, I remember you. Go on with your story." "Well," answered the stranger, "are you still willing to take a chance?" |
| 1. Mr. Brown ______. |
[ ] |
| A. lived in the city of London B. worked in an office C. walked to London every day D. was a train driver |
| 2. Mr. Brown liked walking because ______. |
[ ] |
| A. he was a good runner B. he wanted to be healthy C. he wanted to save money D. he wanted to help others |
| 3. Mr. Brown walked to his office ______. |
[ ] |
| A. every day B. when he went to work early C. when it wasn't raining D. when it was raining |
| 4. What do you think about the stranger? |
[ ] |
| A. Perhaps he was a clever but lazy man. B. He knew Mr. Brown very well. C. He was one of Mr. Brown's neighbours. D. Mr. Brown knew him. |
| 5. Which of the following sentences is true? |
[ ] |
| A. Mr. Brown was kind-hearted. B. The stranger got another five pounds at last. C. Mr. Brown was not willing to help others. D. Mr. Brown believed the stranger very much. |