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.