问题 单项选择题 A1型题

HIV病毒感染的最主要途径是()

A.性行为传播

B.静脉吸毒

C.反复输血

D.器官移植

E.母婴垂直传播

答案

参考答案:A

解析:HIV传播途径:①性接触传播:为本病的主要传播途径。②血源传播:输入被HIV污染的鲜血、血浆或其他血制品;因不规范和非法采血;静脉吸毒者使用HIV病人用过的注射器;医院消毒隔离措施不严;医务人员或科研部人员意外地被HIV污染的针头、手术刀等均可造成传播。③母婴传播:感染本病的孕妇可通过胎盘将HIV传播给胎儿。④其他:应用HIV感染者的器官移植或人工授精、口腔科操作等也可传播。【该题针对“获得性免疫缺陷综合征”知识点进行考核】

阅读理解

阅读理解。

     I was in a rush as always, but this time it was for an important date I just couldn't be late for! I found

myself at a checkout counter behind an elderly woman seemingly in no hurry as she paid for her groceries.

A PhD student with not a lot of money, I had hurried into the store to pick up some flowers. I was in a huge

rush, thinking of my upcoming evening. I did not want to be late for this date.

     We were in Boston, a place not always known for small conversation between strangers. The woman

stopped unloading her basket and looked up at me. She smiled. It was a nice smile-warm and reassuring-and

I retuned her gift by smiling back.

     "Must be a special lady, whoever it is that will be getting those beautiful flowers," she said.

     "Yes, she's special," I said, and then to my embarrassment, the words kept coming out. "It's only our

second date, but somehow I am just having the feeling she's 'the one,' " jokingly, I added, "The only problem

is that I can't figure out why she'd want to date a guy like me."

     "Well, I think she's very lucky to have a boyfriend who brings her such lovely flowers and who is obviously

in love with her," the woman said. "My husband used to bring me flowers every week-even when tines were

tough and we didn't have much money. Those were incredible days; be was very romantic and-of course- I

miss him since he's passed away."

     I paid for my flowers as she was gathering up her groceries. There was no doubt in my mind as I walked

up to her. I touched her on the shoulder and said "You were right, you know. These flowers are indeed for a

very special lady." I handed the flowers and thanked her for such a nice conversation.

     It took her a moment to realize that I was giving her the flowers I had just purchased. "You have a

wonderful evening," I said. I left with a big smile and my heart warmed as I saw her smelling the beautiful

flowers.

     I remember being slightly late for my date that night and telling my girlfriend the above story. A couple of

years later, when I finally worked up the courage to ask her to marry me, she told me that this story had helped

to seal it for her-that was the night than I won her heart.

1. Why was the writer in a hurry that day?

A. He was to meet his girlfriend.

B. He had to go back to school soon.

C. He was delayed by an elderly lady.

D. He had to pick up some groceries.

2. What does the underlined phrase "her gift" (Paragraph 2 ) refer to?

A. Her words.

B. Her smile.

C. Her flowers.

D. Her politeness.

3. Why did the writer give his flowers to the elderly lady?

A. She told him a nice story.

B. She allowed him to pay first.

C. She gave him encouragement.

D. She liked flowers very much.

4. What is the message conveyed in the story?

A. Flowers are important for a date.

B. Small talk is helpful.

C. Love and kindness are rewarding.

D. Elderly people deserve respecting.

单项选择题