网络改变生活 Part I Warming Up Section A: Dictation 1. The first useful telegraphs were developed in Britain and the United States in the 1830s Each letter of the alphabet and each number had to be sent separately by a device called a telegraph key. 2. On Aug. 5th, 1858, the first message was transmitted by a wire cable under the Atlantic Ocean. This meant that information now took only a matter of hours to reach most large cities in the world 3. On NoV. 2nd, 1920, radio station KDKA in Pittsburgh, Pennsylvania broadcast the first radio program. Within a few short years, news and information could be heard anywhere a radio broadcast could reach 4. After World War II, a new invention appeared: television. In the industrial countrie television quickly became common in most homes 5. In the 1950s, two important events took places that greatly affected the communications of information The first was a television broadcast that showed the east coast and the west coast of the United States at the same time. People could see two reporters talk to each other although they were separated by a continentPart I Warming Up Section A :Dictation 1. The first useful telegraphs were developed in Britain and the United States in the 1830s. Each letter of the alphabet and each number had to be sent separately by a device called a telegraph key. 2. On Aug. 5th,1858, the first message was transmitted by a wire cable under the Atlantic Ocean. This meant that information now took only a matter of hours to reach most large cities in the world. 3. On Nov. 2nd, 1920, radio station KDKA in Pittsburgh, Pennsylvania broadcast the first radio program. Within a few short years, news and information could be heard anywhere a radio broadcast could reach. 4. After World War II, a new invention appeared: television. In the industrial countries, television quickly became common in most homes. 5. In the 1950s, two important events took places that greatly affected the communications of information. The first was a television broadcast that showed the east coast and the west coast of the United States at the same time. People could see two reporters talk to each other although they were separated by a continent. 网络改变生活