1. It is this fact that explains everything. 2. It was I who told her the news. 3. It was my friend who helped me in my work. 4. It was on the seventh of November, 1917, that the working people took power into their own hands. 5. It was on Sunday when they met the delegation.
10. Переведите текст на русский язык и ответьте на вопросы.
NATURE’S BUILDING BLOCKS.
What are atoms?
Over two thousand years ago, about 400 B.C., the Greek philosopher Democritus tried to figure out what the world is made up of and how it came to be the way it is. He came to the conclusion that all things are made up of tiny particles, too small to be seen. There are many kinds of them and they are always moving about, sometimes combining, and sometimes separating again. Democritus deserves tremendous credit for giving us this theory. In the past people believed in many ideas which with new knowledge and experience later proved false. But all discoveries of science in over two thousand years of work show that Democritus was right.
Further study has shown that the molecules are made up of still smaller particles known as atoms. Although there are thousands of different molecules, there are only 103 different kinds of atoms. These 103 kinds of atoms are the building blocks out of which all material things are made.
Notes: B.C. – до нашей эры
to figure out – рассчитывать, высчитывать
to make up – состоять, состaвлять
to come to the conclusion – прийти к заключению
proved false – оказались ошибочными
Questions: 1. What is the world made up of according to Democritus?
2. Did his theory prove right?
3. When and where did Democritus live?
4. What are the nature’s building blocks?