牛津M7U1 Reading.ppt

Undoubtedly, both TV and audio devices will play an increasingly important role in our future life. What other functions would you like them to have in the future? 请点击word图标 Quiz I: Fill in the blanks with words given in the box. (P5 Part E) constructed drawbacks percentage eventually delayed receiver foresaw With the patent of the telephone in 1876, people could now have a conversation with each other over a long distance. Many engineers (1) _______ that it would be possible to send electrical signals through the atmosphere without relying on foresaw telephone wires. Some important breakthroughs in the development of radio were made by Nikola Tesla in the USA in 1891. However, Tesla’s work had many (2) ___________. The first real radio was (3) ____________ by Guglielmo Marconi, an Italian, in 1896. Early radios just sent signals made up of dots and dashes. It was not until 1906 that adaptations were made so that radio could relay conversation and drawbacks constructed music. Since people were sceptical that the public would want to hear radio broadcasts, the building of radio stations was (4) ________ . Only a very small (5) __________ of radio stations were built before 1920. however, most people had access to a radio (6) ________ by the late 1920s and early 1930s. (7) __________, radio became the primary means of getting news and entertainment. delayed percentage receiver Eventually Quiz II: 认真阅读课文的Reading部分，并根据所读内容在空格处填入最恰当的单词。每空一词。 The evolution of video and sound devices Early history of TV In 1925, the first public TV broadcasts were made in the USA. In 1928, the first long-distance TV broadcast was made. Television Many people made (1) ___________ to the development of TV. The years between 1928 and 1951 (2) __________ the development of color TV. The modern age: satellite TV In 1962, satellites were used to broadcast TV. People who live far away from cities have (3) ________ to TV signals with the help of satellite dishes. contribut