Раскройте скобки и правильной форме. 1. For many years scientists (to study) the nucleus before they found that it is possible to split it. 2. Many power stations (to use) atomic energy for a long time before I knew it. 3. All this period scientists and engineers (to develop) rocket technology and electronics in close cooperation. 4. We widely (to use) electronic devices in industry for many years. 5. We know that our astronomers (to observe) the moon for a long time. 6. My friend (to make) these experiments to compare the weight of elements since the first of September 7. The question about the new experiment on this subject (to discuss) for some time before we came to a definite conclusion. 8. The fact that atom has a nucleus in its center, which is positively charged, (to discuss) by Ernest Rutherford in 1911. 9. This problem (to solve) in the near future. 10. The phenomenon of radioactivity (to use) widely in industry, medicine and agriculture 11. He found that this effect (to cause) by some unknown subatomic particles. 12. The weights of these particles (to calculate) with the help of electronic computer. 13. U-238 (to convert) into plutonium and then (to use) to generate atomic power. 14. These substances (to refer to) usually as hydrogen isotopes 15. One of the isotopes of hydrogen (to call) deuterium. 16. He (to puzzle) by these unexpected results. 17. It (to show) that these substances differed greatly in their chemical properties. 18. It (to expect) that the results of our research (to apply) in chemical industry.

Друг! недавно я был в индии и видел там невероятный фестиваль огней или фонарей. тысячи бумажных фонариков были запущены в небо. возле дорожек и асфальтированных дорог были размещены цветные фонари, и даже столбы горели синим, зеленым, красным и фиолетовым цветами. народ был одет еще пестрее, чем обычно. это было так красиво! я никогда не забуду этот фестиваль. hi, my friend! recently i was in india and saw an improbable festival of fires or lamps there. thousands of paper small lamps were started in the sky. near paths and the asphalted roads color lamps were placed, and even columns burned blue, green, red and violet in the flowers. the people were dressed even more floridly, than usually. it was so beautiful!   i will never forget this festival.

Robots
 The era of robots is approaching. It’s the result of scientific-technical progress. These mechanical agents were created to help people with hazardous work and daily chores. And, indeed, they are capable of doing many things. They can perform any operations, according to the program installed in them. For example, they can help with the laundry, do preparatory work for cooking meals, answer the phone, pick up objects, and even deal with radioactive substances. If we think over this issue, we will realize that we have already robots at our houses. They don’t only come in the shape of an electronic man, they are also regarded as automatic machines for performing various work. Most household appliances are like robots: a dishwasher, a washing machine, a clothes dryer, a microwave, a blender, a vacuum-cleaner, etc. These intelligent machines help us on everyday basis. They have significantly changed our life to the better. Speaking of realistic robots with two hands, two legs and a head with built-in computer, these creatures might be very useful in the future. Perhaps, every house will have at least one robot to provide help with a repetitive, boring work. Other than that, robots can be exploited to do the most difficult and dangerous things. They are already sent to explore other planets or to explore deep underwater. They are used in factories to build cars and other electronics. It seems that the only way we can get such things done is to entrust them to robots. In my opinion, the future of scientific progress is impossible without them. I’m sure that humanoid robots with Artificial Intelligence will be used by new advanced generations.