更多“单选题Price quotes ______ .A have daily been announcedB have been announced dailyC daily have been announcedD have been daily announced”相关问题
  • 第1题:

    John told us that by the end of the year they _____ together for thirty years.

    A. would have been living

    B. would have lived

    C. would have been lived

    D. will have been living


    参考答案: A

  • 第2题:

    Every book except these two ( ).

    A、have sold

    B、have been sold

    C、has sold

    D、has been sold


    参考答案:D

  • 第3题:

    In the United States have announced plans to dismiss almost eighty thousand workers, however, the businesses dependent on the airline industry have not been harmed.()

    此题为判断题(对,错)。


    正确答案:错误

  • 第4题:

    What you saw can' t have been an aeroplane. I' m convincedit____ a large bird.

    A.must be

    B.has been built

    C.must have been

    D.could have been


    参考答案:A

  • 第5题:

    His parents _______ the US for ten years.

    A、have been

    B、have gone to

    C、have been to

    D、have been in


    正确答案:D

  • 第6题:

    A number of theories have been proposed to explain the situation.

    A:suggested
    B:tested
    C:used
    D:announced

    答案:A
    解析:
    本句意思:很多理论被建议去解释那种情况。propose意为“建议”,与suggest(建议)意 思相同。test测验;use使用;announce宣布。

  • 第7题:

    夹子用完了。()

    • A、Clamps have been used up.
    • B、Lashing wires have been used up.
    • C、Twist locks have been used up.
    • D、Turnbuckles have been used up.

    正确答案:A

  • 第8题:

    While designing your database, you have created the EMPLOYEES table as an index-organized table (IOT). You want to create a bitmap index on the JOB_ID column to make queries faster. Which task must have been completed so that you are able to create the bitmap index?() 

    • A、A primary key must have been created.
    • B、A mapping table must have been created.
    • C、An overflow tablespace must have been specified.
    • D、The PCTTHRESHOLD option must have been specified.

    正确答案:B

  • 第9题:

    While designing your database, you have created the EMPLOYEEStable as an index-organized (IOT). You want to create a bitmap index on the JOD_IDcolumn to make queries faster. Which task must have been completed so that you are able to create the bitmap index?()

    • A、 A primary key must have been created.
    • B、 A mapping table must have been created.
    • C、 An overflow tablespace must have been specified.
    • D、 The PCTTHRESHOLD option must have been specified.

    正确答案:B

  • 第10题:

    单选题
    I was on the highway when this car went past followed by a police car. They _____ at least 150 km an hour.
    A

    should have been going

    B

    must have been going

    C

    could have gone

    D

    would have gone


    正确答案: D
    解析:
    must have done表示有把握的肯定的推测,又因为是对过去某一时刻的推测,因此用过去完成进行时。句意为:当这辆车和紧随其后的警车经过时,我在高速路上。它们的时速至少是150公里。

  • 第11题:

    单选题
    While several baseball teams have tried to supplant the Yankees as the dominant team in baseball, their inability has been unable to win even half as many World Series as the Yankees have won in the past one hundred years.
    A

    their inability has been unable

    B

    the inability they possess has not been able

    C

    having been unable

    D

    they were unable

    E

    they have been unable


    正确答案: B
    解析:
    A和B项改变了句子的意思。C项“having”的使用不恰当,且省去了必要的主语“they”。D项中的一般过去时“were”与后面的现在完成时“have won”的时态不一致。E项中使用“they”作主语,且动词都使用了现在完成时时态。

  • 第12题:

    单选题
    While designing your database, you have created the EMPLOYEEStable as an index-organized (IOT). You want to create a bitmap index on the JOD_IDcolumn to make queries faster. Which task must have been completed so that you are able to create the bitmap index?()
    A

     A primary key must have been created.

    B

     A mapping table must have been created.

    C

     An overflow tablespace must have been specified.

    D

     The PCTTHRESHOLD option must have been specified.


    正确答案: A
    解析: 暂无解析

  • 第13题:

    Perhaps the experiment _____ by this time tomorrow.

    A、has been done

    B、will have been bone

    C、will do

    D、would have done


    参考答案:B

  • 第14题:

    John and I ______ friends for eight years. We first went to know each other at a Christmas party. But we ______ each other a couple of times before that.

    A had been; have seen

    B have been; have seen

    C had been; had seen

    D have been; had seen


    参考答案:D

  • 第15题:

    If only it ()so cold, perhaps I, too, ()more initiative.

    A、had been,have shown

    B、have been,would show

    C、had’t been,cound't have shown

    D、had't been,could have shown


    参考答案:D

  • 第16题:

    This is the first time the students ______ to Hyde Park.

    A、have been

    B、have been gone

    C、have been going

    D、are being gone


    正确答案:A

  • 第17题:

    The ship ______ on a low rock was broken in two by the waves.

    A.That had been driven

    B.Had been driven

    C.Have been driven

    D.Which to have been driven


    正确答案:A

  • 第18题:

    A number of theories have been proposed to explain the situation.

    A: tested
    B:suggested
    C:used
    D:announced

    答案:B
    解析:
    本句意思:一系列的理论被提议来解释这个情况。propose意思为“提议,建议", suggest’的意思与其最接近。

  • 第19题:

    They()for hours.

    • A、have been driving
    • B、have been driven
    • C、drove
    • D、drive

    正确答案:A

  • 第20题:

    Since 1991,the goals set in the plan()

    • A、have been largely achieved
    • B、have largely not been achieved
    • C、have been achieved in some significant areas
    • D、have not been achieved at all

    正确答案:B

  • 第21题:

    单选题
    John, how lazy you are! This work ______ three days ago.
    A

    should have done

    B

    must have been done

    C

    should have been done

    D

    might have done


    正确答案: C
    解析:
    句意:这份工作本该三天前完成的。should have done表示应该做而没有做,含有责怪之意。must have done意为“一定做了”,表示肯定的推测。

  • 第22题:

    单选题
    夹子用完了。()
    A

    Clamps have been used up.

    B

    Lashing wires have been used up.

    C

    Twist locks have been used up.

    D

    Turnbuckles have been used up.


    正确答案: C
    解析: 暂无解析

  • 第23题:

    单选题
    While designing your database, you have created the EMPLOYEES table as an index-organized table (IOT). You want to create a bitmap index on the JOB_ID column to make queries faster. Which task must have been completed so that you are able to create the bitmap index?()
    A

    A primary key must have been created.

    B

    A mapping table must have been created.

    C

    An overflow tablespace must have been specified.

    D

    The PCTTHRESHOLD option must have been specified.


    正确答案: D
    解析: 暂无解析