题目内容

I am a computer expert. I have been in the field for only a short time. I never learned much in the way of science or math. And I am quite puzzled by things like engineering or electronics.Then why am I able to write about computers I can write on this subject because of these shortcomings. The last two years of learning has been a hard test for me. By hard work I have managed to learn enough to use computers fairly well, and to work with people who know a great deal more than I. Since I have learned all this at such personal cost, I would like to share my know-ledge with others. More and more people want to know about computers, and want to know quickly.The best way to learn is to take a course. However, many people do not have the time for this. They will have to find some other ways to get some basic information. I hope to be able to help them by writing about some of the things I have learned by myself.I have a home computer on which I’ve learned in my own time. I have used it like a home study course. I have sat down with it day after day, night after night. I have forced it to give up some of its secrets. Now I can use it to do some of the work that I get paid for. And I can do this work in my own home, instead of in an office. Many people may soon be working in a computer at home, just as many now take in other people’s typing.Some things about computers are easier than you may fear. First, computers are logical. Things that at first seem difficult will make sense to you after you learn the rules. Second, it is really not hard to learn enough to use today’s machines. You do not need to be a great brain. But you do have to learn to think in new ways. And you do have to keep a good bit of information in your head. Finally, there are many people around who are really enthusiastic (热心的) about computers. These people are always happy to be of help. The purpose of the passage is to convince readers that, by studying computers at home, people can become()

A. computer experts
B. writers about computers
C. computer scientists
D. skilled users of computers

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案例分析题若对大小为N的有序顺序表进行顺序查找,当查找不成功时,平均查找长度为();当查找成功且表中仅有一个关键字等于欲查找的元素时,平均查找长度为()。 当查找成功且表中仅有一个关键字等于欲查找的元素时,平均查找长度为()。

A. N
B. N+1
C. N/2
D. (N+1)/2

One day Tom bought, for two dollars, a large number of used books. He put them in a (36) and pulled them to the (37) . He was to (38) at work until three in the morning. At three, he (39) to walk home. The streets were dark. Tom could (40) wait to arrive home and began to read his new books." (41) !" a voice shouted. But Tom was too (42) to hear the shout well.A moment later, a gunshot (43) his ear. He heard the shot. Tom turned to see what was (44) . An angry policeman ran toward him. The policeman thought that the bag did not (45) Tom. He shouted at Tom, "Drop it !"" (46) !" the policeman ordered.Tom opened it and the old books (47) out of it."Why not stop (48) when I shouted" the policeman asked, "If I had shot (49) , you would have been dead." "I didn’t (50) you," Tom said, "I am almost deaf."The policeman told Tom he was (51) for having shot at him." (52) would be better for you not to walk on the (53) at night." he said.Tom smiled, and told the policeman that his job (54) a telegrapher was a night job. The policeman could think of (55) to answer this. 37()

A. telegraph office
B. bedroom
C. police station
D. streets

What is the woman’s favourite fruit

A. It’s Friday.
B. It’s October 12th.
C. It’s the 11 th of December.

简述《中国食物成分表2002》的分类方法。

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