Упр.2 Юнит 7 Урок 3 ГДЗ English Кузовлев 10-11 класс

Important inventions were made in different countries.

1. What are some of these inventions? Who invented them and where?
2. Which pieces of information about the time the things were invented are true? Which are not true?
3. The American scientist Thomas Edison was one of the greatest inventors ever. What inventions did he make and when?
4. What inventions had been made by the end of the 20th century?

1) Some of these inventions are:

1. The first Russian automobile was designed by P. A. Frez and E. A. Yakovlev in Russia. By May 1896, the car had been built.
2. Penicillin was discovered by Alexander Fleming in 1928. In 1945, he was given the Nobel Prize for it.
3. The first gas stove had been made before the first electric stove appeared.
4. The sewing machine had been tested before it became popular.
5. Scotch tape was perfected by Richard Drew in 1928. It had been invented by Jim Kirst from the USA in 1923.
6. The first ballpoint pen was produced in 1940. It had been invented by L. Biro, a Hungarian artist and journalist, in 1905.
7. A solar-powered car called Dream was created by Japanese scientists in 1996. They used solar cells that had been developed in the middle of the 20th century.

2) True information about the time the things were invented:

• Penicillin was discovered in 1928.
• The first gas stove had been made before the first electric stove appeared.
• Scotch tape was invented in 1923.
• The first ballpoint pen was invented in 1905.

Not true information:

• The first Russian automobile was not built in May 1896 only; it had been built by that time.
• The sewing machine was not just tested; it had already been invented and tested earlier.

3) Thomas Edison made many inventions, for example:

• the electric light bulb;
• the phonograph;
• the motion picture camera.

He made these inventions in the late 19th century.

4) By the end of the 20th century, many inventions had been made, for example:

• the automobile had been invented;
• the gas stove had been made;
• the sewing machine had been tested and improved;
• penicillin had been discovered;
• Scotch tape had been invented and perfected;
• the ballpoint pen had been invented and produced;
• solar cells had been developed.