单选题In the past 50 years, there _____ a great increase in the amount of research _____ on the human brain.A was...didB has been...to be done C was...doingD has been...done

题目
单选题
In the past 50 years, there _____ a great increase in the amount of research _____ on the human brain.
A

was...did

B

has been...to be done  

C

was...doing

D

has been...done

相似考题

1.Much _____ in the past few years.A.has been doneB.has doneC.didD.was done

2.In the past few years my aunt ___________ enough money to buy a house.A. has saved upB. has kept upC. has set upD.has saved aside

3.What is the main idea of the man's speech?A．Everything at State University has changed in the past ten years.B．Although the campus looks the same, some things have changed at State University.C．In spite of the changes on the campus, the commitments of the State University remain the same.D．Everything has stayed the same at State University during the past ten years.

4.He has done some () on that subject from various angles over the past ten years.A.researchB.a researchC.researchesD.the researches

参考答案和解析
正确答案： A
解析：
根据in the past 50 years判断，需用现在完成时。过去分词短语和不定式都能做定语，但本句想表达的是已经做了的实验，因此应用过去分词表完成和被动，选项D正确。
更多“单选题In the past 50 years, there _____ a great increase in the amount of research _____ on the human brain.A was...didB has been...to be done C was...doingD has been...done”相关问题

  • 第1题：

    During the past two decades, research has＿our knowledge of daydreaming.

    A. expanded B. emerged

    C. descended D. conquered


    正确答案：A

  • 第2题：

    Although the number of____ is not great, it has none the less increased significantly over the past few days.

    A、position

    B、stranger

    C、applications

    D、character


    正确答案：C

  • 第3题：

    The moral shortsightedness is revealed in the fact that _____.

    ［A］ the government has stopped the experiment on human tissue

    ［B］ the donation consent forms are difficult to understand

    ［C］ the Human Tissues Act is an obstacle to important medical research

    ［D］ embryonic research shows disregard for human life


    正确答案：C

  • 第4题：

    During the past two decades，research has______our knowledge of daydreaming.

    A．expanded

    B．emerged

    C．descended

    D．conquered


    正确答案：A
    解析：在最近的20年间，研究已经拓展了对白日梦的知识。expand：拓宽，拓宽；emerge：显现，浮现；descend：下降；conquer：占领。

  • 第5题：

    Over the past ten years, China has__________a series of great changes in its infrastructure and economy.

    A．witnessed
    B．found
    C．occurred
    D．taken

    答案：A
    解析：
    考查动词辨析。witness意为“见证”，可以用物作主语。句意为“过去十年，中国在基础设施和经济方面都发生了一系列的变化”。故选A。

  • 第6题：

    A great deal has been done to remedy the situation.

    A:maintain
    B:improve
    C:preserve
    D:protect

    答案：B
    解析：

  • 第7题：

    Once environmental damage( )，it takes many years for the system to recover.

    A.has done
    B.is to do
    C.does
    D.is done

    答案：D
    解析：
    考查被动语态。当do作“造成”解时，为及物动词，因空格后没有宾语，所以应用被动语态，因此D项正确。故本题选D。句意：环境系统一旦被破坏，需数年才能恢复。

  • 第8题：

    There has been a great increase in retail sales , （）﹖

    • A、does there    
    • B、isn't there  
    • C、hasn't there     
    • D、isn't it

    正确答案:C

  • 第9题：

    单选题
    There has been a great increase in retail sales , （）﹖
    A

    does there    

    B

    isn't there  

    C

    hasn't there     

    D

    isn't it


    正确答案： D
    解析： 暂无解析

  • 第10题：

    问答题
    The Importance of being Interested　　1) Now I have recalled these beginnings of the careers of Franklin, Darwin and Mozart because they strikingly illustrate a profound psychological truth the significance of which can scarcely be overestimated. 2) It is fl truth, to be sure, that has long been partially recognized. 3)But its full meaning has not been--and could not be—appreciated until quite recently. 4)Only within the past few years has scientific research effected various discoveries which make its complete recognition possible and of supreme importance—of such importance that practical application of the principles involved would make for an immediate and stupendous increase in human happiness, efficiency, and welfare. 5)Stated briefly, the truth in question is that success in life, meaning thereby t he accomplishment of results of real value to the individual and to society, depends chiefly on sustained endeavor springing out of a deep and ardent interest in the tasks of one's chosen occupation.

    正确答案：
    1)现在我已回顾了富兰克林,达尔文和莫扎特刚开始事业时的情况。因为这些事雄辩地说明了心理方面的一个深刻的真理,其意义再强调也不过分。2)确实,这是一个长期来并没有充分认识的真理,3)直到前不久,其全部意义才被,才可能被理解。4)只是在最近几年里科学研究才作出种种发现,使得完全认识这一真理成为可能,并变得极其重要,以至于它所涉及到的原则运用到实践中去会立即和极大地提高人的效力,给人类带来幸福和康乐。5)简单地说,这个真理就是生活的成功,即实现个人和社会的真正价值的结果主要取决于坚持不懈的努力,这种努力是来源于对自己所选择的事业深深的和炽热的兴趣。
    解析： 暂无解析

  • 第11题：

    单选题
    For many years, Mark, a film star in Hollywood, has been suffering from the _____ that he is a great man.
    A

    allusion

    B

    illusion

    C

    elusion

    D

    delusion


    正确答案： D
    解析：
    句意：多年来，马克，好莱坞的一个电影演员，一直沉浸在自己是一个大人物的幻想之中。delusion错觉，幻想。allusion暗指。illusion幻觉，错觉。elusion逃避。

  • 第12题：

    单选题
    Mr.Joe has worked very hard in the past two years and has paid all his debts_________ the last penny.
    A

    by

    B

    to

    C

    until

    D

    with


    正确答案： C
    解析：

  • 第13题：

    The number of these families has increased ______ 40 percent in the past ten years.

    A、to

    B、up

    C、by


    参考答案：C

  • 第14题：

    Much research( ) into the possibiecauses of the disease in the past few years.

    A.has been done

    B.was done

    C.have been done

    D.were done


    答案：A

  • 第15题：

    The moon-landing is mentioned in the first paragraph to illustrate_____.

    [A] technology cannot solve all of our human problems

    [B] progress in vaccine research for influenza has lagged behind

    [C] great achievements have been made by men in exploring the unknown

    [D] the development of vaccine production methods can not be stopped


    正确答案：B

  • 第16题：

    Mr. Joe has worked very hard in the past two years and has paid all his debts （ ）the last penny.

    A.by
    B.to
    C.until
    D.with

    答案：B
    解析：
    本题考查介词。句意为“乔先生在过去两年里非常努力地工作，他还清了全部债务，分文不欠”。by表示通过某种方式；until表示 “直到……”，一般用于时间；with表示“用……工作，随着”；to表示“直到”，用在句子里强调直到还清最后一分钱，即偿清债务。故本题选B。

  • 第17题：

    A great deal has been done internally to. ( ) the situation.


    A. supplement
    B. remove
    C. remedy
    D. Compensate

    答案：C
    解析：
    A项补充:B项消除:C项弥补，补救;D项补偿:根据句意，已经在内部做了大量工作来弥补这种情况。C和D符合，但.是D项侧重为了用钱赔偿损害，C是指，为了修复不好的状态成为好的状态。

  • 第18题：

    We__________have proved great adventurers,but we have done the greatest march ever made in the past ten years.

    A.needn't
    B.may not
    C.shouldn't
    D.mustn't

    答案：B
    解析：
    考情点拨：本题考查情态动词一应试指导：句意：我们也许没有被证明是伟大的探险家，不过我们的前进是过去十年来最伟大的。“may not+现在完成时”表示“也许没有”，用于对过去或已经发生的事进行猜测。“needn’t+现在完成时”表示“本来没有必要”，表示过去不需要做某事：“shouldn’t+现在完成时”表示“本来不应该做而做了某事”。mustn’t不与现在完成时连用，只与动词原形连用，表示“禁止，不要”。

  • 第19题：

    A customer has an 8-way p650 running an application for about 200 users.  In the past， the requiredamount of memory and processors has increased proportionally to the number of new users.  The customer plans to increase users by 10% each year for the next three years.  Next year， a database will be added to the workload to support the users directly rather than being on a separate machine. What is the most likely result of this projected growth？（）

    • A、Disk usage will increase in proportion to memory.
    • B、The new database will demand much more memory.
    • C、Memory demand will increase 10% for the next year.
    • D、Processor demand will increase about 10% for the next year.

    正确答案:B

  • 第20题：

    单选题
    In the past 50 years, there _____ a great increase in the amount of research _____ on the human brain.
    A

    was...did

    B

    has been...to be done

    C

    was...doing

    D

    has been...done


    正确答案： C
    解析：
    根据in the past 50 years判断，需用现在完成时。过去分词短语和不定式都能做定语，但本句想表达的是已经做了的实验，因此应用过去分词表完成和被动，选项D正确。

  • 第21题：

    单选题
    Your firm has been recommended to us by AMK company, （） we have done business for many years.
    A

    with whom

    B

    with who

    C

    whom

    D

    who


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    A customer has an 8-way p650 running an application for about 200 users.  In the past， the requiredamount of memory and processors has increased proportionally to the number of new users.  The customer plans to increase users by 10% each year for the next three years.  Next year， a database will be added to the workload to support the users directly rather than being on a separate machine. What is the most likely result of this projected growth？（）
    A

    Disk usage will increase in proportion to memory.

    B

    The new database will demand much more memory.

    C

    Memory demand will increase 10% for the next year.

    D

    Processor demand will increase about 10% for the next year.


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    Over the past ten years, natural gas production has remained steady, but _____ has risen steadily.
    A

    consumption

    B

    dissipation

    C

    disposal

    D

    expenditure


    正确答案： A
    解析：
    句意：在过去的十年里，天然气产量始终保持不变，但消耗量却在稳步上升。consumption消耗，消费，指某物经过使用而消耗掉或被用尽。句中but暗示了其前后是production和所填词形成的反义关系，因此A符合题意。dissipation浪费，挥霍，主要强调时间、金钱等方面。disposal处理，清除，主要表示处理废弃物。expenditure花费，消耗，费用，强调时间、金钱、劳力等方面，其反义词为revenue。

  • 第24题：

    单选题
    In the past 50 years, there _____ a great increase in the amount of research _____ on the human brain.
    A

    was...did

    B

    has been...to be done  

    C

    was...doing

    D

    has been...done


    正确答案： B
    解析：
    根据in the past 50 years判断，需用现在完成时。过去分词短语和不定式都能做定语，但本句想表达的是已经做了的实验，因此应用过去分词表完成和被动，选项D正确。

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