在下列叙述中,正确的是()。A.软盘、硬盘和光盘都是外存储器 B.计算机的外存储器比

题型:单项选择题

问题:

在下列叙述中,正确的是()。

A.软盘、硬盘和光盘都是外存储器

B.计算机的外存储器比内存储器速度快

C.计算机系统中的任何存储器在断电的情况下,所存的信息都不会丢失

D.绘图仪、鼠标、显示器和光笔都是输入设备

考点:计算机等级考试PC技术计算机三级(PC技术)31
题型:单项选择题

第二部分阅读理解(共20小题;每小题2分,满分40分)

阅读下列短文,从每题所给的四个选项A、B、C和D中,选出最佳选项。

A

Each time I see a balloon, my mind flies back to a memory of when I was a six-year-old girl. It was a rainy Sunday and my father had recently died. I asked my mom if Dad had gone to heaven. "Yes, honey. Of course," she said.

"Can we write him a letter?"

She paused, the longest pause of my short life, and answered, "Yes."

My heart jumped. "How? Does the mailman go there?" I asked.

"No, but I have an idea." Mom drove to a party store and returned with a red balloon. I asked her what it was for.

"Just wait, honey. You'll see." Mom told me to write my letter. Eagerly, I got my favorite pen, and poured out my six-year-old heart in the form of blue ink. I wrote about my day, what I learned at school, how Morn was doing, and even about what happened in a story I had read. For a few minutes it was as if Dad were still alive. I gave the letter to Mom. She read it over, and a smile crossed her face.

She made a hole in the corner of the letter where she looped(缠绕) the balloon string. We went outside and she gave me the balloon. It was still raining.

"Okay, on the count of three, let go. One, two, three."

The balloon, carrying my letter, darted(猛冲) upward against the rain. We watched until it was swallowed by the mass of clouds.

Later I realized, like the balloon, that Dad had never let his sickness get him down. He was strong. No matter what he suffered, he'd persevere, dart up, and finally transcend(超越) this cold world and his sick body. He rose into sky and became something beautiful. I watched until the balloon disappeared into the gray and white and I prayed that his strength was hereditary(遗传的). I prayed to be a balloon.

56. When the girl asked her mother if they could write to her father, her mother ______.

A. felt it hard to answer                       B. thought her a creative girl

C. believed it easy to do so                    D. found it easy to lie

57. When the girl was told that she could send a letter to her father, she ______.

A. jumped with joy                           B. became excited

C. started writing immediately            D. was worried that it couldn't be delivered

58. In the eyes of the author, what was the rain like?

A. An incurable disease.                     B. An unforgettable memory.

C. The hard time her father had.                 D. The failures her father experienced.

59. What would be the best title for the passage?

A. The strong red balloon                     B. An unforgettable experience

C. Fly to paradise                          D . A great father

题型:单项选择题

材料一、2008年9月25日21时10分,在甘肃酒泉卫星发射中心,“神舟七号”启程飞向遥远的太空。

材料二、神舟七号载人航天飞船遨游太空,航天员翟志刚实现了太空行走。我国航天事业取得的辉煌业绩来自于几代航天人50多年自力更生、艰苦奋斗的执著追求和不懈努力,也是自强不息的民族精神与时代精神结出的丰硕成果。

(1)“太空一小步,中国一大步”,我们备感自豪和骄傲。这是因为:

___________________________________________________________________________________________

(2)我国航天人的执著追求对我们的学习和生活有什么启示?

___________________________________________________________________________________________

题型:单项选择题

根据4H2O+3Fe

 高温 
.
 
X+4H2↑,,推断X的化学式(  )

A.Fe

B.FeO

C.Fe2O3

D.Fe3O4

题型:单项选择题

预膜的是使循环冷却水系统中所有换热设备与管道的金属表面形成一层非常薄的能抗腐蚀的保护膜。

题型:单项选择题

2011年,G省交通运输生产持续平稳增长。

全年客运总量522002.45万人,比上年增长11.8%,增幅同比回落2.9个百分点。旅客周转总量3852.66亿人公里,比上年增长15.3%,增幅同比回落1.4个百分点。分运输方式看,铁路客运量和旅客周转量分别为17778.00万人和506.00亿人公里,比上年分别增长18.9%和10.9%;公路客运量和旅客周转量分别为493618.00万人和2082.68亿人公里,比上年分别增长11.6%和20.0%;水路客运量和旅客周转量分别为2591.00万人和9.63亿人公里;航空客运量和旅客周转量分别为8015.45万人和1254.35亿人公里,比上年分别增长5.1%和9.9%。

全年货运总量234913.02万吨,比上年增长14.7%,增幅同比提高1.7个百分点。货物周转总量7105.95亿吨公里,比上年增长19.8%,增幅同比提高0.1个百分点,公路货运量和周转量增幅分别比上年提高4.7个和7个百分点,其他运输方式增幅较上年则呈现不同程度的回落;其中,航空和铁路回落幅度较大,主要是2010年航空新增两架货运专机和高铁投入运营后,比2009年增幅基数偏高所致。

2009年客运总量约为()万人。

A.407068

B.428748

C.455102

D.479340

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