问题 单项选择题

(4) 支持多道程序设计,算法简单,但存储器碎片多。 (5) 能消除碎片,但用于存储器紧缩处理的时间长。 (6) 克服了碎片多和靠拢处理时间长的缺点,支持多道程序设计,但不支持虚拟存储。 (7) 支持虚拟存储,但不能以自然的方式提供存储器的共享和存取保护机制。

A.段页式

B.纯分页式

C.请求分页式

D.可重定位分区

E.固定分     单一连续分配

答案

参考答案:B

阅读理解

David Moore taught science at the City School. He needed some books, so he bought them. He left the books in his car in a quiet street. Then he went to buy some other things. At about six o’clock he came back to the car. One window was open and the books were not there! David had to drive to Fry Road.

That night he wrote a letter to a newspaper. The next day he went to the police station. On Friday people read this in the newspaper:

“Book: Do you have any old books? I buy old and modern books. Open all day on Saturday. David Moore, 26 Fry road.”

David stayed at home on Saturday. His first visitor came at eight o’clock. David took him to the kitchen. At half past nine another man arrived. He had a bag with him.

“Mr. Moore?” the man asked.

“That’s right,” David said. “Can I help you?”

“I’ve got some good books. You buy books, don’t you?”

“Yes, bring them in. I’ll have a look at them.”

Soon the books were on the table. “Come in now,” David called, “and bring the list.”

A policeman came into the room from David’s kitchen. They were just the same. “Come with me, sir,” the policeman said to the man.

小题1: David’s first visitor was ______________.

A.a student

B.a policeman

C.a reporter

D.a thief小题2:From the story we know that________.

A.David was a good teacher

B.David was a clever man

C.The policeman knew the thief well

D.David worked hard小题3:How did David get his books back?

A.A reporter found them and gave them to him.

B.David found them in his school.

C.He thought of a good way to catch the thief.

D.He found them at home.

单项选择题 B1型题