Упражнение 1. Поставьте глаголы в скобках в PresentPerfect.
1.He (finish) training.
2.She (score) twenty points in the match.
3. We (watch) all the Champions League matches this season.
4.That's amazing! She (run) fifteen kilometers this morning!
5.She (buy) some really nice rollerblades!
6. Oh, no! I (lose) my money!
7. My mum (write) shopping list. It's on the kitchen table.
8.Dad, you (eat) my biscuit!
9.I’m tired. I (watch) three X-Files videos.
10. Hurry up! They (start) the film!
Упражнение 2. Дополните предложения словами for (в течение) или since (с какого-либо времени).
.
1. I've lived in Washington 1997.
2. Ben has studied English three years.
3.They haven't visited their grandparents months.
4.Julie's ill. She's been in bed Tuesday.
5.My dad has had his car sixteen.
6.It's been ten years we moved to Oxford.
2. Lawyers should enjoy working with people because they are representing their legal interests.
3. Many little boys dream of becoming firemen when they grow up.
4. Not everyone working at your local makeup counter is a licenced cosmetologist. Most are just sales people.
5. The industries of chemicals, energy, healthcare, financial services, business services and government are hiring the largest number of network security professionals at present.
6. Years ago advertising agencies hired professional trained artists to produce graphics for their magazine and newspaper ads.
7. Some of the most popular career choices for mechanics are auto, industrial, diesel and aircraft mechanics.
8. College main subjects for computer engineers include computer science, mathematics or software engineering
9. When a company can't figure out how to connect what they do to people around them, marketing specialists help get people excited about its products and services.
10. A small company may have one or two accountants employed, while a large firm may have a vast team of accountants working in different divisions or branches.
The center of this world is a tiny silicon plate of a few square millimeters, an integrated circuit, or a chip, as it is more commonly known. The integrated circuit is undoubtedly one of the most sophisticated inventions of man, science and technology. As the operation os an integrated circuit depends on microscopic "components", the purity of all materials and the cleanness at the plant they are produced at must be of the highest quality.
In the past it took scientists and reserchers a whole lifetime to make a few thousand calculations, whereas for a modern computer this task is a matter of a few seconds. At present computers capable of performing billions of operations a second are required. In the next few years engineers will complete the work on computers of above 2 billion operations a second. It will take a few more years to produce a 10-billion operationscomputer. According to some researchers, we are close to what can be regarded as a true physical limit. But other specialists think that photons will make the operation a thousand times faster. This means that in the future it will be possible to expect the appearance of photon computers and that computations will be done by means of light. In a few decades a new age of light may replace the stil youthful electronic age. The race is going on.