问题 单项选择题

不属于红细胞结构异常的是( )

A.嗜碱点彩红细胞
B.Cabot环
C.Dohle小体
D.Howell-Jolly小体

答案

参考答案:C

解析:嗜碱点彩是瑞氏染色后,血涂片上红细胞胞浆内见到散的大小和数量不一的深蓝色颗粒;Cabot环在红细胞中出现的一种紫红色呈圆形或8字形细线环。Howell~Jolly小体是成熟红细胞或晚幼红细胞内紫红色、大小约1~2μm的圆形小体。而Dohle小体是中性粒细胞胞质中的出现蓝色区域。故本题应选C。

单项选择题

Many years ago, when I was fresh out of school and working in Denver, I was driving to my parents’ home in Missouri for Christmas. I stopped at a gas station(加油站) about 50 miles from Oklahoma City, where I was planning to stop and visit a friend. While I was standing inline at the cash register, I said hello to an older couple who were also paying for gas.

I took off, but had gone only a few miles when black smoke poured from the back of my car. I stopped and wondered what I should do. A car pulled up behind me. It was the couple I had spoken to at the gas station. They said they would take me to my friend’s home. We chatted on the way into the city, and when I got out of the car, the husband gave me his business card.

I wrote him and his wife a thank-you note for helping me. Soon afterward, I received a Christmas present from them. Their note that came with it said that helping me had made their holidays meaningful.

Years later, I drove to a meeting in a nearby town in the morning. In late afternoon I returned to my car and found that I’d left the lights on all day, and the battery was dead. Then I noticed that the Friendly Ford dealership—a shop selling cars was right next door. I walked over and found two salesmen in the showroom.

"Just how friendly is Friendly Ford" I asked and explained my trouble. They quickly drove a pickup truck to my car and started it. They would accept no payment, so when I got home, I wrote them a note to say thanks. I received a letter back from one of the salesmen. No one had ever taken the time to write him and say thank you, and it meant a lot, he said.

"Thank you" are two powerful words. They’re easy to say and mean so much.

The author planned to stop () at Oklahoma City.

A.to visit a friend

B.to see his parents

C.to pay at the cash register

D.to have more gas for his car

单项选择题 A型题