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    科目： 来源：不详 题型：单选题

    It is well known that biology is ______ science about living things.
    A．a
    B．the
    C．/
    D．an

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    科目： 来源：不详 题型：单选题

    It is often said that _______ teachers have ______ very easy life.
    A．不填;不填
    B．不填;a
    C．the;不填
    D．the; a

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    科目： 来源：不详 题型：单选题

    ______recent report stated that the number of Spanish speakers in the U.S .would be higher than the number of English speaker by_____ year 2090.
    A．theB．A, /C．The ,/D．The, a

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    科目： 来源：不详 题型：单选题

    ___on-going division between English –speaking Canadians and French-speaking Canadians is _______major concern of the country.
    A．The ,/B．The ,aC．An ,theD．An,/

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    科目： 来源：不详 题型：单选题

    When he left _____college ,he got a job as ______reporter in a newspaper office .
    A. /, a   B /, the  C .a the D .the, the

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    科目： 来源：不详 题型：单选题

    While he was investigating ways t improve the telescope Newton made _______discovery which completely changed ____ man’s understanding of color.
    A．a ,/B．a ,theC．/, theD．the ,a

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    科目： 来源：不详 题型：单选题

    ______ polar bear population is ______ sensitive topic for the Canadian government, which allows limited hunting.
    A．A; theB．A; aC．The; theD．The; a

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    科目： 来源：不详 题型：单选题

    Every spring, the park becomes ______ colourful place with lovely flowers everywhere, which is ______ absolutely fantastic sight.
    A．the; the B．a; anC．a; theD．the; an

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    科目： 来源：不详 题型：单选题

    The radio club in our school, which is in ______ charge of Hao Zhe, is much more than just ______music for everyone.
    A．/; /B．/; theC．the; /D．the; the

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    科目： 来源：不详 题型：单选题

    It makes _______ big difference to keep calm when giving _______ first aid.
    A．a, /B．/, theC．a, theD．/,a

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