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　　Now machines 1 all over the world. Why are machines so important and necessary 2 us? Because they can help us do things faster and 3 .

　　A washing machine helps us to wash clothes. A printing machine helps us to print a lot of books, newspapers, magazines and many 4 things 5 . Bicycles, can, trains and planes are all machines. They help us to travel faster than 6 foot.

　　The computer is a wonderful machine. It 7 not long ago. It not only 8 but also computers number millions of times as 9 as a scientist does.

　　Let's study hard and try to use all kinds of machines 10 China into a modern country.

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