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my new computer cost an and a

10-11 класс

Lkristyal2013 21 янв. 2017 г., 14:06:12 (7 лет назад)
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Help19999
21 янв. 2017 г., 14:48:14 (7 лет назад)

The History of Computer DevelopmentThe rapidly advancing field of electronics led to construction of the first general-purpose electronic computer in 1946 at the University of Pennsylvania. It was Electronic Numerical Integrator And Computer or ENIAC, the device contained 18,000 vacuum tubes and had a speed of several hundred multiplications per minute. Its program was wired into the processor and had to be manually altered.Later transistors appeared. The use of the transistor in computers began in the late 1950s. It marked the advent of smaller, faster elements than it was possible to create with the use of vacuum-tube machines. Because transistors use less power and have a much longer life, computers alone were improved a lot. They were called second-generation computers.Components became smaller and the system became less expensive to build.Modern digital computers are all conceptually similar, regardless of size and shape. Nevertheless, they can be divided into several categories on the basis of cost and performance.The first one is the personal computer or microcomputer, a relatively low-cost machine, usually of desk-top size. Sometimes they are called laptops. They are small enough to fit in a briefcase. The second is the workstation, a microcomputer with enhanced graphics and communications capabilities that make it especially useful for office work. And the server computers, a large expensive machine with the capability of serving the needs of major business enterprises, government departments, scientific research establishments. The largest and fastest of these are called supercomputers.A digital computer is not actually a single machine, in the sense that most people think of computers. Instead it is a system composed of five distinct elements: a central processing unit, input devices, memory storage devices, output devices and a communications network, called a «bus» that links all the elements of the system and connects the system itself to the external world.Talking about a central processing unit or the heart of computer; I would like to add that there were several generations of microprocessors. The first generation was represented by processing unit Intel 8086. The second generation central processing unit was represented by processing unit Intel 80286, used in IBM PC AT 286. In the end of 80s such computer costs about 25-30 000 rubles in the former USSR. The third generation is represented by Intel 80386, used in IBM PC AT 386. The microprocessors of the fourth generation were used in computers IBM PC AT 486. There are also central processing units of the fifth generation, used in Intel Pentium 60 and Intel Pentium 66, central processing units of the sixth generation, used in computers Intel Pentium 75,90,100 and 133. Few years ago appeared central processing units of seventh and eighth generations.Computer speeds are measured in gigahertz today. Recently, an optical central processing unit has been invented, which is capable of executing trillions discrete operations per second or it is as fast as the speed of light.So, we are at the threshold of new computer era, when artificial intelligence could be invented. There are no questions with «if», the only question is «when». And time will show us either computers become our best friends or our evil enemies as it is shown in some movies.

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скажите ответ на вопросы по тексту The Land and the people of great Britain

1 why do you think the UK is called "an island state"

2 What is the Union Jack? what do you know about it

Пожалуйста, помогите!!! Read through the text again. Put the adjectives you find in the table in your Workbook. Use the words from the list and

add more examples of your own.

-al

-ant,

-ent,

-ient

-ed

-ing

-ful

-ic

-ive

-less

-ious,

-ous

-ible,

-able
-y

tradition, communicate, responsibility, effect, culture, history, excellence, limit, music, remark, interest, conversation, understand, ambition, care, create, wonder

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Пожалуйста помогите, можете сделать эти предложений каждые ( General question, Special question, Taq question ) очень срочнооо

1 ) Yesterday Paul went to the swimming pool.
2 ) My new bag costs thirty dollors.
3 ) On Monday we have History, Psycology not know and English.
4 ) Most of the students in our froup speak two goreign languages.
5 ) Children do not like to go to bed early.

118 The simple present and the present continuous

Put the verbs in brackets into the correct present tense.

I Mrs Jones: My daughter never (write) to me so I never (know) what she (do). Your son (write) to you, Mrs Smith?
Mrs Smith: Yes, I (hear) from him every week. He (seem) to like writing letters.

2 These apples (cost) 40p a bag. You (think) that is expensive? ~
It (depend) on the size of the bag.

3 I (see) my solicitor tomorrow (/ have arranged this)', I (change) my will. ~
You always (change) your will. Why you (not leave) it alone?

4 You (look) very thoughtful. What you (think) about? ~
I (think) about my retirement. ~
But you're only 25. You only just (start) your career. ~
I (know); but I (read) an article which (say) that a sensible man (start) thinking about retirement at 25.

5 My next door neighbour always (knock) on my door and (ask) me lend her l0 p pieces. ~
What she (do) with them? ~

She (put) them in her gas meter. I really (not mind) lending her a few l0p pieces but what (annoy) me is that she (know) how many she (need) each week but never (take) the trouble to bring the right number home.

6 What she (do) if she (run out) of them when you are away? ~
Oh, she (borrow) from her other neighbour, Mr White; but this (take) longer because he always (want) her to stay and chat and she (find) quite hard to get away from him. ~

7 How much she (owe) you now? ~

I (not know); I (not keep) an account. Anyway she (leave) next week; she (get) married. I (try) to think of a suitable wedding present, ~

8 Why you (not offer) to cancel her debt? ~
That (sound) rather a mean sort of present. Anyway she probably (not realize) that she (owe) me money.

9 My brother (say) that people who (owe) him money always (seem) forget about it, but people he (owe) money to always (remember) exactly.

10 I (not think) your brother (enjoy) the party. He (keep) looking at his watch. ~

Oh, I'm sure he (enjoy) it. He always (enjoy) your parties. But I (know) he (want) to be home early tonight because he (expect) an important telephone call.

11 Jack: How much longer you (stay) in England?
Paul: Only one more day. I (leave) tomorrow night. I (go) to Holland for two weeks.

12 Jack: And you (come) back to England after that or you (go) home?
Paul: It (depend) on my father. But if he (agree) to let me go on studying here, I'll certainly come back. And I (expect) he will agree.

13 Paul: By the way, Jack, Ann (see) me off at Victoria tomorrow. Why you (not come) too? You could have coffee with her afterwards.

(Paul is advising/inviting Jack to come and see him off.)

14 You (see) that man at the corner of the street? He is a private detective. He (watch) No. 24. ~
How you (know) he (watch) No. 24? ~
Because whenever anyone (come) out of, or (go) into, the house he (make) a note in his little book.

15 What all those people (do) in the middle of the street? And why they (wear) such extraordinary clothes?

They (make) a film. Most of the crowd are local people who (work) as extras. ~

16 It (sound) great fun. You (think) I could get a job as a film extra? ~
I (not know) but I (see) Ann over there; when they (finish) this scene I'll ask her if they still (take) on extras. ~

17 Ann (act) in the film? ~

She has a small part. She (not act) very well. I (imagine) she got the part because she (know) the director.

18 My brother (live) next door and his two children (come) and (see) me every day. The boy (not bother) to knock at the door; he just (climb) in through the window; but the girl always (knock).

19 Tom: We (move) into our new house tomorrow.
Bill: But why you (leave) your present house? It (suit) you all.
Tom: Yes, I (know) it (do); but the Council (pull down) all the houses on this side. They (widen) the road. They (say) it's a bottleneck.

20 If you (ask) a friend if she (like) your new dress she usually (say) 'Yes'; so you (not know) whether she really (think) it (suit) you or whether she merely (be) polite.

1. His great (achieve) were (enter) the university and (find) a good job. 2. My friend was (able) to do this difficult task. 3. The (academy) year

lasts from September till June for students. 4. The female-(act) performed very terrific and were very beautiful 5. In (add) the topic was not discussed in public. 6. He has (allergic) to cats and can’t live with them in the same flat. 7. When I was little I (allow) to watch funny cartoons late in the evening 8. The man took some drugs and was (addict) 9. The old lady suffered from (anxious) according to everything. 10. I am mad about my new classmate’s (appear). 11. He was so (argument) that everybody listened to him with attention. 12. They’ve filled (apply) forms and now they are waiting for the results. 13. The teacher checks the (attend) of all pupils. 14. He was (attract)-charming. 15. It was an (believe) story. Nobody could say a word. 16. The (builder) were working from 3 till 8 yesterday. 17. She felt (comfort) and decided to leave. 18. He was shy and (communicate). 19. The (compete) will be next month. 20. The (crime) situation in our city is very (danger) 21. This newspaper is (day) 22. My mother’s (decide) are not discussed.

II. Put the verbs in brackets Into the correct voice and tense-forms. • 1. Don't let the boy stay out so long. He (to run about) for three

hours, and may catch cold. 2. That young singer has had a very good training. He (to sing) for half an hour and never (to stop) for a moment's rest. 3. It is unfair of you to be cross with the man. He (to be) away for two weeks and you can't blame him for the few mistakes that (to make) during his absence (отсутствие). 4. Our reply (to send) to you as soon as all the dates (to fix) finally. Some of them (to consider) yet. 5. “I (not to see) Ann lately. What she (to do)?" “She just (to take) her finals and (to prepare) to go away for a holiday.” 6. “Why you (to wear) that strange-looking suit? You (to look) quite a sight in it!" “Why, I (to wear) it for a month and nobody (to say) a word all this time." 7. It’s no use calling for the docu ments now. They (to prepare) when I (to leave) the office, but I don’t think they (to be) ready yet. 8. There (to be) considerable changes, in this area in the last five years. The main part of it (to build up) already, and several new factories (to set up) now. In another three years it (to turn) into a large industrial area. 9. Jesse (to be unemployed — быть безработным) for five months when he (to manage) to get hired as a driver at a small factory. 10. The trav ellers (to walk) through the forest for several hours when they (to discover) that they (to lose) their way. 11. “Where is the new engineer?’’ “He (to take round) the factory. He already (to snow) the main shops (цеха), but he only (to go) over the whole factory by the end of the day.” 12. Last Sunday my friend and I decided to go fishing. When I got to my friend’s place at four in the morning, all his things (to pack) and last minute preparations (to make). My friend (to look) cross and (to say) he (to wait) for me for half an hour.

Please help!!!! Нужно до завтра!1).My little sister (just, discover) that Santa Claus (not,exist). She ....(believe) in him (for/since) the day she(be)

born.2).Can you .... (draw) pictures with the help of your new computer? - I(not, know). I... (not,do) it yet. 3).You (find) your pen? - No, but honestly speaking i even (not, look) for it. 4).Do you like reding? - Yes, I(read) three boooks this week. 5). Who (break) my favourite cup? - It (be) me. I.... (break) it while I was washing up. 6)Where is Mum? Where she (go)? -I'm not sure, but I think she (go) to the supermarket. Yestarday she (say) she (need) some vegetables. 7)We (have) this cottage (for/since) 15 years and we like it very much. 8)How long you (be) here ? -We (arrive) two days ago.9)I (know) Peter all my life. -And I(know) him only (for/since)the last conference.



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