4. Answer these questions.

1. Which is the quickest – a phone call, a fax, an e-mail or a letter?

2. Which is the cheapest – a phone call, a fax, an e-mail or a letter?

3. Have you sent all of these – a letter, a fax and an e-mail? Have you received all of them?

4. Which is your favorite way of communicating with a friend?

5. Which is your favorite way of business communication?

5. Fill in the blanks with the following words.

Outputs, input, processes, receive, send, retrieves, saves

Data is …………… in a computer. A computer …………… this data under the control of a program. A computer …………… information. A computer …………… this data or information for later use on disk. A computer …………… the saved data or information whenever needed. If equipped with a modem and if it is connected to a telephone line, the computer may …………… information to other computers through telecommunication systems. If equipped with a modem and if it is connected to a telephone line, the computer may …………… information from other computers through telecommunication systems.

6. Read the statements below. Write True / False in the blank.

T / F	Do not use the computer during a storm.
	Spray your computer with household cleanser to keep it clean.
	Spilling liquids on your computer won’t hurt it.
	Keeping your computer dust-free can help it last longer.
	Your mouse should never need cleaning.
	It won’t hurt to eat a peanut butter and jelly sandwich while using the computer.
	Downloading from Internet sites could expose your computer to dangerous viruses.
	Surge protectors can help guard against lighting, but may not be complete protection.
	You should remove the computer cover monthly to clean inside.
	Opening an e-mail attachment could download a virus into your computer system.
	Canned air can be used to clean your computer keyboard.

7. Rank the following inventions in order of importance and give your reasons why they are important to society.

Invention	Rank	Reason
bar code
microchip
mobile phone
ink pen
internet
plastic
antibiotics

8. Do you use the latest inventions? In what areas do they make your lives easier and safer? Where are security cameras mostly used? Why? Read the text and find out at least three places where cameras are used.

Cameras

One of the latest technological developments is cameras, which have been used for many

years, especially to fight against crime. First, cameras have started to be installed in public places

such as car parks and shopping centers where the number of the staff isn’t enough to prevent theft. Recent surveys have shown that theft has decreased in the places where cameras are installed.

Cameras have also been used in schools, colleges and office lifts to prevent the theft of valuable equipment such as computers. Secondly, cameras are helpful in preventing hooligans from spoiling the pleasure of the majority at some social events like football matches. They film people at large sporting events so it is easy to distinguish the people who are hooligans. Finally, cameras are used outside our houses as it is a good way of catching thieves. To conclude, it is possible to reduce crime and feel more secure by means of cameras.

a. Decide if the following statements are T (True) / F (False).

1. Cameras have just started to be used against crime.

2. There has been a fall in theft, thanks to cameras.

3. It is not possible to identify hooligans by using cameras.

4. People prefer to use cameras outside their houses for burglars.

5. Technology helps us to feel more secure in our daily lives.

b. Write the reasons why cameras are installed in the places mentioned.

Places with cameras installed	Reason
schools, colleges and office lifts
football fields
outside our houses

c. Match the situations with the best explanations.

1. Ali didn’t get a high mark for his homework.	a) It might be the only means of transport he knows.
2. She got very tired while cleaning the house.	b) The house could have been very dirty.
3. He took photos with his mobile phone.	c) It should have been done more carefully.
4. I think he will come here by the underground.	d) They should be paying a large bill.
5. They are paying a lot for the central heating.	e) It might have had a camera.