(A)
　　Now machines_____all over the world. Why are machines soimportant and necessary_____us? Because they can help us do thingsfaster and_____.
　　
　　A washing machine helps us to wash clothes. A pnnting machinehelps us to print a lot of books, newspapers, magazines and many_____,things_____. Bicycles, cars, trains and planes are all machines. Theyhelp us to travel faster than_____foot.
　　The cotnputer is a wonderful machine It_____not long ago. It notonly_____, but also computes numbers millions of times as_____asa scientist does.
　　Let's study hard and try to use all kinds of machines_____Chinainto a modem country.