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    精英家教网 > 高中英语 > 题目详情

    Several musicians say they consider it the greatest musical composition ____written.


    1. A.
      already
    2. B.
      once
    3. C.
      ever
    4. D.
      before
    C
    试题分析：A. already已经B. once一次，一旦  C. ever 曾经D. before以前；句意：几个音乐家说他们认为这个是曾经被写过的最好的一部作曲。故选C.
    考点：副词的辨析
    点评：ever ----曾经 ，多与完成时连用；I have ever been to Beijing .我曾去过北京。
    once-----曾经（有一次），多与过去时连用；We lived in London once . 我们曾在伦敦住过。本题强调以往写过的所有的，故用ever更贴近英语的表达习惯。ever还有永远的意思。
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    Read the following four passages．Each passage is followed by several questions or unfinished statements．For each of them there are 4 choices marked A, B, C and D．Choose the one that fits best according to the information given in the passage．

    　　Batteries can power anything from small sensors to large systems．While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves．University of Missouri(MU)researchers are developing a nuclear energy source that is smaller, lighter and more efficient．

    　　“To provide enough power, we need certain methods with energy density(密度),” said Jae kwon, assistant professor of electrical and computer engineering at MU．“The radioisotope(放射性同位素)battery can provide power density that is much higher than chemical batteries．”

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    　　Together with J．David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery．In the future, they hope to increase the battery's power, shrink its size and try with various other materials．Kwon said that the battery could be thinner than the thickness of human hair．

    (1)

    Which of the following is true of Jae Kwon?

    [　　]

    A．

    He teaches chemistry at MU．

    B．

    He developed a chemical battery．

    C．

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    D．

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    [　　]

    A．

    to show chemical batteries are widely applied

    B．

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    C．

    to describe a nuclear－powered system

    D．

    to introduce various energy sources．

    (3)

    According to Jae Kwon, his nuclear battery ________．

    [　　]

    A．

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    B．

    will soon replace the present ones

    C．

    could be extremely thin

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    The text is most probably a ________．

    [　　]

    A．

    science news report

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    book review

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    newspaper ad

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    A
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    PART THREE: READING COMPREHENSION (30分)

    Directions: Read the following three passages. Each passage is followed by several questions or unfinished statements. For each of them there are 4 choices marked A, B, C and D. Choose the one that fits best according to the information given in the passage you have just read.

    A

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    "The development of China's railway is so fast. In the beginning of the year, the speed is only 160 kilometers per hour. Soon, the speed reached 250 kilometers. And now, it's 350 kilometers! As a driver, I am very impressed."

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