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为了将复杂的大信息系统分解成便于理解和实现的部分，通过将过程和由它们产生的数据类分组、归并，形成______。

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W: Good morning, Mr. Tim. It’s a long time since I had the pleasure of a visit from you.M: Yes, it must be three or four years. I haven’t visited you since I called about my will. You helped me with that, you rememberW: Yes, I remember. Do you want to make any changes in your willM: I don’t think that will be necessary, but you’ll tell me if it is, I left everything, you remember, to my wife, and after her death, to my son Jerry. I’ve about $ 15, 000 in shares of industrial companies. These bring in, after paying tax, about $ 1, 125 a year. Well, I’m earning a good salary now, and I shall get a good pension from my employers, so my wife and I can live fairly comfortably with this extra income. I want to buy some land and build a house for my son; he will need a house when he gets married. I’m thinking of building one and giving it to him.W: Your son’s lucky. So you want my help buying the land and building the house.M: Yes, that’s right. As soon as you’ve done what’s necessary for buying the land, Jerry and I will see an architect.W: Have you found a plot yetM: Jerry was in Edinburgh last Saturday and saw a plot he likes. My wife and I went there two days ago, and we liked it, too. I’d like you to make the necessary inquiries for me.W: I’d be pleased to do that. I shall have to write to the Local Authority and inquire whether it is allowed to build a house on your piece of land. You’ve not allowed to build a house without permission from the Planning Authority. And sometimes the Authority decides that a house must be built of stone, and not of brick, so that it doesn’t spoil the surrounding village. How long have they not met each other().

A. Half a year.
B. Two years.
C. Three or four years.
D. More than five years.

I don’t know how I became a writer, but I think it was because of a certain force in me that had to write and that finally burst through and found a channel. My people were of the working class of people. My father, a stone-cutter, was a man with a great respect and veneration for literature. He had a tremendous memory, and he loved poetry, and the poetry that he loved best was naturally of the rhetorical kind that such a man would like. Nevertheless it was good poetry, Hamlet’s Soliloquy, Macbeth, Mark Antony’s Funeral Oration, Grey’s Elegy, and all the rest of it. I heard it all as a child; I memorized and learned it allHe sent me to college to the state university. The desire to write, which had been strong during all my days in high school, grow stronger still. I was editor of the college paper, the college magazine, etc, and in my last year or two I was a member of a course in playwriting which had just been established there. I wrote several little one-act plays, still thinking I would become a lawyer or a newspaper man, never daring to believe I could seriously become a writer. Then I went to Harvard, wrote some more plays there, became obsessed with the idea that I had to be a playwright, left Harvard, had my plays rejected, and finally in the autumn of 1926, how, why, or in what manner I have never exactly been able to determine. But probably because the force in me that had to write at length sought out its channel, I began to write my first book in London. I was living all alone at that time. I had two rooms -- a bedroom and a sitting room -- in a little square in Chelsea in which all the houses had that familiar, smoked brick and cream-yellow-plaster look. The author really started on his way to become a writer ().

A. when he was in high school
B. when he was studying at Harvard
C. when he lived in London
D. after he entered college

TextOne of the advantages of taking notes is that it forces you to pay closer attention to the class lecture. If you listen (26) to a professor who is talking on and on for an hour or so, your mind will often (27) and your attention lessen. You arc sitting in class and listening, but that (28) you are doing; (29) when you listen actively you have to pay more careful and (30) attention to what (31) . This is because you are trying to (32) what you bear into an (33) , shortened written form. As a foreign student, you may find (34) very difficult to listen and write notes (35) at the same time. It is difficult (36) , but you will learn how to do (37) with practice. You (38) afraid you will forget what you are listening to (39) you are listening and writing at same time, but the studies of researchers (40) the value of note-taking in (41) lecture material have shown that learners remember (42) reproduced in some note form much better than lecture information they have listened to (43) down in note form. So doing two things at the same time is better than doing one thing. (44) . We do not say it is (45) ; we say it is better. 39().

A. even though
B. though
C. as if
D. because

在面向数据流的设计方法中，一般定义了一些不同的映射方法，利用这些方法可以把______变换成软件结构。