问题 单项选择题

在数据管理技术发展的三个阶段中,数据共享最好的是______。

A.人工管理阶段

B.文件系统阶段

C.数据库系统阶段

D.三个阶段相同

答案

参考答案:C

解析: 数据管理发展至今已经历了3个阶段:人工管理阶段、文件系统阶段和数据库系统阶段。其中最后一个阶段结构简单,使用方便,逻辑性强,物理性少,在各方面的表现都最好,一直占据数据库领域的主导地位,所以选择C。

阅读理解

At midnight Mr. King coughed again. He got up and took some medicine. Before he lay down again, he smoked. And he couldn’t go to sleep any longer. He found the medicine book and began to read it. He was afraid he had lung cancer. He seemed to see death was waiting for him. Tears(眼泪) ran down his face. He didn’t see his wife was standing by him.

“What’s wrong with you, dear?” asked the woman.

“Nothing,” the old man answered and covered his face with his hands.

The old woman opened the book and understood at once. She said, “You must stop smoking right now.”

“I began to smoke when I was nine, you know. How can’t I do that?”

“But I think health is more important.”

Mr. King coughed again and his wife said, “Go to see a doctor tomorrow. He will be able to help you, I think.”

The doctor told Mr. King to have an Xray examination of his lungs. And then he looked at the Xray carefully for a long time.

“Tell me the truth, doctor.”said Mr.King, “Do you see any shadows(阴影)in my lungs?”

“No, I don’t see anything.”

“Yes?” the old man said happily. “Really?”

“Yes. Your lungs are turning black. How can I see any shadows?”

(   )6. Mr.King got up to      .

A. smoke again

B. talk with his wife

C. read the medicine book

D. take some medicine

(   )7. Mr. King coughed because      .

A. he couldn’t go to sleep

B. he was afraid to die

C. he smoked too much

D. he was too old

(   )8.    , so tears ran down his face.

A. Mr. King thought he had lung cancer

B. Mr. King couldn’t understand the book

C. Mr. King was too sad to go to sleep

D. The doctors refused to help Mr. King

(   ) 9.The doctor told Mr. King to have an Xray examination because      .

A. he was sure the man would die soon

B. he wanted the man to stop smoking right now

C. he wanted to know if there was something wrong with his lungs

D. he was sure the man would soon be all right

(   )10. Which of the following is true?

A. There was nothing serious with Mr. King.

B. Smoking too much caused Mr. King’s lungs to turn black.

C. The doctor found some shadows in Mr. King’s lungs.

D. Mr. King decided to stop smoking at once.

单项选择题