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译林2003课标版《Reading(1)：The evolution of video and sound devices》新课标PPT课件优质课下载
What are they?
TV sets
Leading-in:
What does the TV in your home look like?
How big is it? Is it in color or in black and white?
What audio devices do you choose to enjoy music?
What functions else do you need in an audio device besides playing music?
Do you want to know more
about TV and audio devices?
Read the text quickly and answer the
following questions:
Who made the first recording of a human voice?
Who developed the system used for most early TV broadcasts?
What were developed in the late 1960s?
1. When did regular public TV
broadcasting begin around the world?
It began on 11 May 1928 in New York
and in London on 20 August 1929.
2. What is satelite TV?
Satellites allow live TV to be broadcast over vast distances, with everyone receiving the same broadcast at the same time.
3. What was available in 1982?
The the first CDs were made available.
Scan the text and choose the best answers.
1．When and where were the first public TV broadcasts made?
A．In 1925 in the USA. B．In 1925 in the UK. C．In 1928 in the UK. D．In 1928 in the USA.