沪教牛津版8年级上册unit 3 课文computer facts

周志高 提交于 周一, 07/13/2020 - 09:35

Computer facts

Smaller and better

In the 1940s, the first computers were bigger than cars. Now computers are becoming smaller and better.

Some computers are tiny. You may be unaware of them. There is probably one inside your TV or washing machine. You depend on computers more than you realize.

What can we do with computers?

We can use computers to calculate. They can calculate at a faster speed than we can and almost never give wrong answers. We can also type and draw things with them. In addition, computers can do important jobs like operating railways and flying planes and spaceships.

Is a computer clever than me?

The answer is “No”. Your brain can produce new ideas but computers cannot. However, one day computers may be able to do a better job human beings. For example, they may be better than doctors at doing their job.

What will happen to us if computers can do all our jobs? Will we have nothing to do? Computers many change our lives, but will they make them better?

 

Computer game problems

Good afternoon, parents and teachers. Thank you for attending this meeting. 

Last weekend, one of our students went to hospital. The student played computer games on the Internet all day Saturday without stopping to drink, eat or sleep. Finally, he became very ill.

Some students play computer games for too long. This is a serious problem. In the past, students used to play outside more often, but now they spend more time in front of computers. This is bad for their health. 

Tomorrow we’ll have some experts here to talk to the students about the bad effects of playing computer games. They’ll also give some advice on how to use computers for studying.

I hope we  can all work together to stop students from spending too much time playing computer games. Thank you for your time.

 

The abacus

The abacus was perhaps the first type of computer. People started using it over 4,000 years ago to do maths. It was used in ancient China, Rome, Egypt and Greece. Today some people still use the abacus.