Вставить слова an invention, a theory, to construct, to discover, to invent. 1. Thomas Edison filed over 1000 patents. He ... a wide range of products from the electric light bulb to the phonograph and motion picture camera

2. Albert Einstein's ... of relativity explains the law of gravitation and its rela tion to other forces of nature. It transformed theoretical physics and astrono my during the 20th century.

3. The Wright Brothers successfully designed, ... and flew the first powered aircraft, showing that man could fly.

4. Benjamin Franklin ... electricity and invented the Franklin stove.

5. Alexander Bell constructed the first practical telephone; his ... totally changed our life.

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