1. Marconi was the only person who invented the radio.
2. A. Popov demonstrated his system several months later than Marconi.
3. Marconi was not aware of the works of Nicola Tesla.
IV. .
1. Who is often credited as the father of radio?
a) Michael Faraday;
b) G. Marconi.
2. What did Marconi publicly demonstrate in September, 1896?
a) He demonstrated the topograph.
b) He demonstrated his first radio system.
V. . .
1. Marconi did develop a practical model.
a) - .
b) .
2. It is unlikely, though, that Marconi was unaware of Teslas presentation, On light and other High Frequency Phenomena in Philadelphia.
a) , . , .
b) , . , .
3. Upon learning about Marconis experiments, Popov effected ship-to-shore communication over a distance of 6 miles in 1898.
a) , 1898 - 6 .
b) 1898 , , - 6 .
VI. 3 4 .
2
I. , . .
Example: These samples ( may / have to/ is to) be chosen deliberately. ( ) .
1. Morse partnered with Alfred Vail and (must/ was able to/ may) commercialize the technology with financial support from the US government.
2. Bell received the patent for the first telephone, but he (should/ must/ had to) fight numerous legal challenges.
3. When Rontgen first noticed the new rays he (shouldnt/ could not/ may not) understand their nature.
4. No one (could/ have to/ may) enter the laboratory while the test is going on.
II. , , Participle I, Participle II Gerund, , ( ). .
Example: There are several ways of obtaining this substance. (Gerund) .
1. In spite of not having a very exciting childhood, Einstein later appeared to have a vivid memory of it.
2. The electric current passing through a wire will heat that wire.
3. The beam of a laser can be focused very precisely.
4. Network hardware is made up of the physical components that connect computers.
