Now machines 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.

【小题1】Machines can help us to do things better and faster, so they _______.

A．are difficult to make

B．are expensive

C．are important and necessary

【小题2】We have to travel on foot without _______.

A．bikes

B．machines

C．planes

【小题3】Computers can store information and numbers _______ a scientist does.

A．a little faster than

B．as fast as

C．much faster than

【小题4】If we want to build China into a modern country, we must _______.

A．study hard

B．try to use all kinds of machines

C．A and B

【小题5】A printing machine can help us _______.

A．print a lot of books

B．read more books

C．wash clothes fast