13. Ученые еще не создали такого робота, который может думать.
14. Человечество никогда не испытывали изменения в жизни и работе в таких масштабах.
* * *
15. "У последних лазерных устройств нашли применение в медицине? «Да, у них есть."
"У инженеров навсегда изменил робот приложения?''Да, у них есть."
17. Есть инженеры разработали различные виды керамики в последнее время?
18. Имеет электроэнергии стать универсальным?
19. Имеет Интернет выросли на удивительно курс?
20. 'Имеет русский ученый сделал простейший типсолнечных котлов? «Да, у него есть."
21. Имеет профессор описаны какие-либо достижения в механике еще? "Нет, он не имеет."
Имеет проблемы загрязнения воздуха и водыстала самой важной за последние несколько лет? Какие новые данные лаборатории получили в последнее время?
24. Почему электричество заменены другими источниками энергии?
25. В какой форме обладает человек использовалсолнечное тепло в течение многих веков?
UNIT 11
Translate the following sentences into Russian:
1. By 1960 the number of cars in the world had reached 60 million.
2. By the beginning of the lecture the lab assistant had brought all the necessary diagrams.
3. By the beginning of the new millennium engineers had designed a great number of complex machine tools.
4. Physics had answered a lot of questions by the beginning of the 21st century.
5. We had already published the results of our work by the end of the year.
6. After the engineers had switched on the device, it began to work.
7. After I had got such a result, I checked the circuit again.
8. After the scientists had changed the light spectrum, they received another hologram.
9. After the scientist had invented a new model of a robot, he became famous.
10. We switched off the laser when we had made the hologram.
11. After the researcher had studied the properties of the alloy, he made a report on this subject.
* * *
12. She had not finished her test when we came.
13. They hadn't predicted the properties of the substance by the time they got this information.
14. The scientist realized that he hadn't spotted a distant planet.
15. The observers reported that they hadn't recorded laser signals from the universe.
16. We heard that they hadn't bought up-to-date equipment for the lab.
* * *
17. 'Had he completed the chemical reaction by the appointed time?' 'No, he hadn't.'
18. 'Had the engineers written many complicated programs for these robots before the exhibition started?' 'Yes, they had.'