以下哪个方法不能用于计算机病毒检测______。A．自身校验 B．加密可执行程序 C

阅读理解。

     In Africa, listening is a guiding principle. It's a principle that's been lost in the constant chat of the

Western world. From my own past experience, I noticed how much faster I had to answer a question

during a TV interview. It's as if we have completely lost the ability to listen. We talk and talk, and we

end up frightened by silence.

     Everywhere, people on the African continent write and tell stories. Even the nomads (流浪者) who

still live in the Kalahari Desert are said to tell one another stories on their daylong wanderings, during

which they search for roots and animals to hunt.

     A number of years ago I sat down on a stone bench outside the Teatro Avenida in Maputo,

Mozambique, where I worked as an artistic consultant. It was a hot day, and we were taking a break,

hoping that a cool gentle wind would move past. Two old African men were sitting on that bench, but

there was room for me, too. In Africa people share more than just water. Even when it comes to shade,

people are generous.

     I heard the two men talking about a third old man who had recently died. One of them said, "I was

visiting him at his home. He started to tell me an amazing story about something that had happened to

him when he was young. But it was a long story. Night came, and I decided that I should come back the

next day to hear the rest. But when I arrived, he was dead."

     The man fell silent. I decided not to leave that bench until I heard how the other man would respond

to what he'd heard. Finally he, too, spoke. "That's not a good way to die-before you've told the end of

your story."

     What separates us from animals is the fact that we are storytelling creatures and we can listen to other

people's dreams, fears, joys, sorrows, desires and defeats-and they in turn can listen to ours.

     Many people make the mistake of confusing information with knowledge. They are not the same thing. Knowledge involves the interpretation of information. Knowledge involves listening.

     Many words will be written on the wind and the sand, or end up in store. But the storytelling will go

on until the last human being stops listening. Then we can send the great record of human out into the

endless universe.

     Who knows? Maybe someone is out there, willing to listen…

1. From the very beginning of the passage, we can know Europeans ________.

A. actually lose the ability to listen

B. seldom chat constantly with each other

C. feel frightened when they are alone and silent

D. tend to talk more and listen less

2. It can be inferred from the passage that if you are in Africa, you will _______. 

A. suffer hot weather and lack of water      

B. be certainly helped when in trouble

C. often hear the stories told by strangers    

D. have no choice but to listen during a talk

3. According to the last three paragraphs, we can know _________.

A. no one knows exactly why Africans are willing to listen

B. information is hard to understand without interpretation

C. listening makes the difference between information and knowledge

D. the existence of humans' recordings totally depends on the way of storytelling

4. The passage mainly talks about __________.

A. the experience of the author          

B. the art of listening in Africa

C. the importance of storytelling        

D. the life styles of Africans

正常涌水量大于1000m³/h的矿井，主要水仓有效容量按照V=2（Q+3000）计算，其中Q代表（）？

A、矿井每小时的最大涌水量

B、矿井每小时的正常涌水量

C、矿井每天的最大涌水量

D、矿井每天的正常涌水量

对主动脉夹层有诊断意义的检查方法有（）。

A.血管数字减影造影

B.胸部二挂类检查

C.心脏大动脉超声检查

D.心电图

E.胸部CT

驾驶机动车看到路边有这种标志时怎样行驶？（）

A．采取紧急制动

B．减速注意观察

C．断续鸣喇叭

D．做好绕行准备

对（）资产而言，便利收益应为0。

A.石油

B.大豆

C.黄金

D.木材