Now machines （机器）are widely used all over the world. Why are machines so important and necessary(必要的) for us? Because they can help us to do things better and faster.
A washing machine helps us to wash clothes fast. A printing machine helps us to print a lot of books, newspapers, magazines and many other things fast. Bikes, cars, trains and planes are all machines. They help us to travel faster than on foot.
The computer is a wonderful machine. It was invented not long ago. It not only stores(贮存) information (信息) but also stores numbers millions of times as fast as a scientist does.
Let’s study hard and try to use all kinds of machines to build China into a modern country.Machines can help us to do things better and faster, so they_____.
| A．are difficult to make | B．are expensive |
| C．are important but not necessary | D．are very helpful |
Computers can store information and numbers_____ a scientist does.
| A．a little faster than | B．as fast as |
| C．much faster than | D．much more slowly than |
If we want to build China into a modern country. We must__________.
| A．study hard |
| B．try to use all kinds of machines |
| C．invent many machines |
| D．all above |
A printing machine can help us___________.
| A．print a lot of books | B．read more books |
| C．invent many machines | D．wash clothes fast |