deaf people. This interest leads him to invent the microphone and, in 1876, his "electrical speech machine," which we now call a telephone. News of his invention quickly spread throughout the country, even throughout Europe. By 1878, Bell had set up the first telephone exchange in New Haven, Connecticut. By 1884, long distance connections were made between Boston, Massachusetts and New York City.

　　Bell imagined great uses for his telephone, like this model from the 1920s, but would he ever have imagined telephone lines being used to transmit video images? Since his death in 1922, the telecommunication industry has undergone an amazing revolution. Today, non-hearing people are able to use a special display telephone to communicate. Fiber optics are improving the quality and speed of data transmission. Actually, your ability to access this information relies upon telecommunications technology. Bell's "electrical speech machine" paved the way for the Information Superhighway.

2. Reading for forms

Read the text ALEXANDER GRAHAM BELL on page 25 to: cut/ the sentence into thought groups, blacken the predicates, darken the connectives and underline all the useful collocations.

3. Copying and making sentences

Collocations are useful for you to learn to express in English. So you shall go over the text again to copy down all the useful collocations.