问题 单项选择题

下列关于微处理器的叙述中,错误的是

A.微处理器具有运算和控制功能

B.目前PC机中的微处理器有多个

C.用微处理器作为CPU的计算机都称为微型计算机

D.Pentium 4微处理器的通用寄存器是31位的

答案

参考答案:C

解析: 本题考查微处理器的基本概念。微处理器是利用大规模集成电路,将处理器的所有部分都集成在一块半导体芯片上。处理器主要由运算器和控制器两部分组成,运算器用来对数据进行各种算术运算和逻辑运算,控制器是指挥中心,能够解释指令的含义,控制运算器及其他部件的工作,记录内部状态等,选项A说法正确。以前的PC机,其CPU仅由一个处理器组成,现在很多PC机中的微处理器都有多个,选项B说法正确。以前把以微处理器作为CPU的计算机通称为微型计算机,现在已经不合适了,目前几乎所有类型的计算机都采用微处理器,只是处理器数目的多少及处理器性能的高低不同而已,选项C说法错误。Pentium 4微处理器的通用寄存器是32位的,选项D说法正确。本题正确答案为选项C。

单项选择题
阅读理解

阅读理解。

     That summer an army of crickets (蟋蟀) started a war with my father. Dad didn't care for insects much

more than Mamma, but he could tolerate a few living in the basement. Mamma was a city girl and she said

a cricket was just too noisy. Then to prove her point she wouldn't go to bed. She drank coffee and smoked

my father's cigarettes and paced between the sofa and the TV. Next morning she threatened to pack up and

leave, so Dad drove to the store and hurried back. He sprayed poison from a jug. When he was finished he

told us that was the end of it.

     For a couple of weeks we went back to find dead crickets in the laundry. He suggested that we'd all be

better off to hide as many as we could from Mamma. I fed a few dozen to the cat who I didn't like because

he scratched for no reason.

     However, soon live crickets started showing up in the kitchen and bathroom. Mamma was upset because

she thought they were the dead crickets come back, but Dad said these were certainly new ones. He fetched

his jug of poison and sprayed all over until the whole house smelled of poison, and then he sprayed the

basement again.

     A couple of weeks later, when both live and dead crickets kept turning up, Dad emptied the basement of

junk. Then he burned a lot of old newspapers and magazines which he said the crickets had turned into nests. 

     While we ate supper that evening, the wind lifted some flames onto the wood pile. The only gasoline was

in the lawn mower's (割草机) fuel tank but that was enough to create an explosion big enough to reach the

house. Once the roof caught, there wasn't much anyone could do.

     After the fire trucks left, Mamma took the others to Aunt Gail's. I helped Dad and Uncle Burt carry things

out of the house and pile them by the road. We worked into the night and we didn't talk much, while all around

the noise of crickets broke our silence.

1. What do we know about the author's mother?

A. She didn't like insects at all.

B. She liked insects more than his father.

C. She cared for insects very much.

D. She could only tolerate a few insects.

2. The author's father drove to the store to buy ____.

A. cigarettes for himself

B. more coffee for his wife

C. some poison

D. some gasoline

3. The author fed a few dozen crickets to the cat probably to ____.

A. make his mother happy

B. help clear away the crickets

C. play with the cat

D. harm the cat

4. The author's father burned the old newspapers and magazines because he thought ____.

A. they were no longer useful

B. the crickets were afraid of fires

C. they became the home of crickets

D. the dead crickets came back to life

5. We learn from the last paragraph that ____.

A. the author's family lost their battle against the crickets

B. the author's parents learned to put up with insects

C. the author's family didn't suffer much in the fire

D. the author's parents got divorced