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.
Bank of America, New York.
This is probably one of the greenest buildings in the world. The 54-storey building was built to use natural daylight for as long as possible. It also has solar panels, rainwater collectors, and materials for the construction of the building itself are made from recycled waste from New York.
Объяснение:
Bank of America, Нью-Йорк.
Это, вероятно, одно из самых "зеленых" зданий в мире. 54-этажное здание было построено таким образом, чтобы использовать естественный дневной свет как можно дольше. Так же здесь установлены панели солнечных батарей, сборники дождевой воды, а материалы для конструкции самого здания сделаны из переработанных отходов Нью-Йорка
1. He has already done his homework, and he can go
for a walk .
2.My sister just came in .
3. When I
called him yesterday, he was busy. He was helping his
mother around the house.
4. She came out a minute ago.
5.
This time tomorrow I'll be on a plane drinking Coffee.
6.We've never been to Tokyo. I think we'll go to Tokyo
in a year. We haven't made enough money yet.
7.What have you prepared for today? "You know, I haven
't prepared anything for today. I didn't have much time.
8.If I get a visa, I will spend the whole summer in the US, but
if I don't get a visa, I will be very upset.
9.My
grandmother baked pies all night last night.
10.What did he
say? He didn't say anything.
11. Have you eaten?" "Not
yet. I'll eat in an hour.
12. We traveled
a lot last year.
13. My dad knows
a lot because he's read a lot..
14.Where are your children? "They're in the garden.