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    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.

    1.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

    2.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

    3.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

    4.A printing machine can help us___________.

    A. print a lot of books B. read more books

    C. invent many machines D. wash clothes fast

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