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Answer the following questions
1. How was one telephone connected with another in the past?
2. How is one telephone connected with
another today?
By thick heavy metal wires
By very thin glass pipes and satellite
electrical signals
electrical signals
How does a telephone work?
Why did people have to wind the handle before making a call?
What did the telephone operator do?
What are satellites used for?
AmericaChina
electrical signals
electrical signals
What was the way to send signals in the past?
metal wires
light
signals
light
signals
How to send signals now?
thin glass pipes
too noisy!not clear!
very clear
electrical signals
electrical signals
conference calling
A
B
CD
E
call waiting
A
B
C
A
B
B
c
redirection
Find some words to complete the sentences:
1. If you don’t know the telephone number of
a certain unit, you may look it up in the telephone d________.
2. This kind of food will s__________you up
after your illness.3. Please r________ all the letters to the following addresses.
irectory
trengthen
edirect
4. We have plenty of rain here, It rains f__________ in this part of the country.
5. You must w______ the clock once a week, or it will stop.
requently
ind
Complete the following sentences 1. ________________________________ (他怎样到美国来的 ) was a mystery.
2. ____________________________________________ (我们是否应该穿校服 ) has not been decided.
3. I didn’t receive the news _________________________ _ ______(会议时间推迟了) 4. The problem is ___________________________________
___________ ( 电信号会变得越来越弱) as they travel along metal wires.
How he came to America
Whether we should wear school uniforms
that the meeting had beendelayed
that electrical signals get weakerand weaker
If you have got enough money, which of the following things do you want to have most? Give your reasons for the choice. A. A mobile telephone B. A car C. A colour TV D. A computer
Homework:
1. Read the text again and again
2. Ex.1 on Page 127.