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    1      the beginning of time, man has invented many interesting things. Some of these inventions, 2      numbers, the alphabet and the radio, have certainly changed history.

    One of the most important 3      has been the computer since 1946. It changed all our lives. The first computer 4      at Harvard University in 1944. It was as large as a room and quite difficult and slow to operate. But since the invention of silicon(娃）chip, computers have become smaller, easier 5     , and faster to operate. Some computers are as 6      as television sets.

    Simple computers can be made smaller than a book. And computers are getting smaller all the time.

    There are several reasons(原因）why the computer is useful to us. First, it can store(储存） very, very large amounts of information in its memory chips. 7      ， the computer can operate very quickly. It’s 8      times faster than humans and it will never feel tired. Third, modem computers can be built into other kinds of machines, like radios, cars, and planes. They can do a lot of work for us.

    Soon, almost everyone, either at home 9      at work，will use some kind of computers. The lives of all of us 10      by this invention.

    (    )1.    A.    Since    B.    When    C.    By    D.    Till

    (    )2.    A.    with    B.    at    C.    for    D.    like

    (    )3.    A.    inventions    B.    invents    C.    invention    D.    invent

    (    )4.    A.    built    B.    has built    C.    was built    D.    is built

    (    )5.    A.    use    B.    to use    C.    used    D.    using

    (    )6.    A.    big    B.    small    C.    bigger    D.    smaller

    (    )7.    A.    First    B.    Second    C.    Third    D.    Finally

    (    )8.    A. Thousands of    B.    Thousand of C. A thousand of    D.    A thousand

    (    )9. A. and    B.    with    C.    while    D.    or

    (    )10. A. are changed  B. will be changed C. will change    D. changed

     1.A后面用了现在完成时，所以用“since”来表示“自……以来”。2. D  3. A 4. C  5. B

    6. B “as... as”中间用形容词的原级，再根据文意，故选B.  7.B 8. A    “thousands of”为固定搭 配。9. D “either... oi.”为固定搭配，意为“或者……或者……”。10. B

    题目来源：初中英语丢分题每周一练九年级全一册 > 能力训练11

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