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问题 单项选择题

在页式存储管理中，系统提供一对硬件寄存器，它们是

A．基址寄存器和限长寄存器

B．直接地址寄存器和间接地址寄存器

C．上界寄存器和下界寄存器

D．页表始址寄存器和页表长度寄存器

答案

参考答案：D

解析：【解析】页式存储管理中，硬件方面提供一对硬件寄存器：页表始址寄存器和页表长度寄存器。前者保存页表在内存的首地址，后者保存页表长度。

多项选择题

诊断急性胰腺炎时，常依靠下列哪几项检查（）。

A.发病3～4小时血清淀粉酶高于128温氏单位（或500索氏单位）

B.腹腔穿刺液中淀粉酶升高，外观是血性混浊

C.B超检查发现胰腺增大，网膜囊及腹腔有积液体

D.既往有胆道疾患

E.有饮酒史
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完形填空

句型转换。（本大题共5小题，每小题1分，满分5分）

1. The boy had bread for his breakfast.(改为否定句)

The boy ___________  ______________ bread for breakfast.

2. People speak French in France.(改为被动语态)

French _________  ___________ in France.

3. “Mum, are you free now?” Kate said to her mother.(改为间接引语)

Kate asked her mother _________ she was free _________.

4. He is working hard at his lessons so that he can catch up with his classmates.(保持句意基本不变)

He is working hard at his lessons ____________ __________ to catch up with his classmates.

5. They had a very enjoyable trip.(改为感叹句)

_____________  _____________ enjoyable trip they had!
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