单选题As manifested in the experimental study, rapid eye movement is characterized by ______.A intensely active brainwave tracesB subjects’ quicker response timesC complicated memory patternsD revival of events in the previous day

题目
单选题
As manifested in the experimental study, rapid eye movement is characterized by ______.
A

intensely active brainwave traces

B

subjects’ quicker response times

C

complicated memory patterns

D

revival of events in the previous day


相似考题
更多“单选题As manifested in the experimental study, rapid eye movement is characterized by ______.A intensely active brainwave tracesB subjects’ quicker response timesC complicated memory patternsD revival of events in the previous day”相关问题
  • 第1题:

    Within the application MY_APP the following PREVIOUS VALUE expression references the sequence MY_SEQ: PREVIOUS VALUE FOR my_seq After which of the following events will the most recently generated value of MY_SEQ persist so that it can be returned to the active MY_APP application?()

    A.After a ROLLBACK is issued

    B.After the sequence is altered

    C.After the sequence is dropped

    D.After the current session ends


    参考答案:A

  • 第2题:

    共用题干
    第二篇

    Sleep Lets Brain File Memories

    To sleep.Perchance to file?Findings published online this week by the proceedings of the National Academy of Sciences further support the theory that the brain organizes and stows memories formed during the day while the rest of the body is catching zzz's.
    Gyorgy Buzsaki of Rutgers University and his colleagues analyzed the brain waves of sleeping rats and mice. Specifically,they examined the electrical activity emanating(散发)from the somatosensory(耳、目、口等以外的)neocortex(新大脑皮层)(an area that processes sensory information) and the hippocampus(海马),which is a center for learning and memory. The scientists found that oscillations in brain waves from the two regions appear to be intertwined.So-called sleep spindles (bursts of activity from the neocortex)were followed tens of milliseconds later by beats in the hippocampus known as ripples.The team posits that this interplay between the two brain regions is a key step in memory consolidation.
    A second study,also published online this week by the proceedings of the National Academy of Sciences,links age-associated memory decline to high glucose levels.
    Previous research had shown that individuals with diabetes(糖尿病,多尿症)suffer from increased memory problems.In the new work,Antonio Convit of New York University School of Medicine and his collaborators studied 30 people whose average age was 69 to investigate whether sugar levels,which tend to increase with age,affect memory in healthy people as well.The scientists administered recall tests, brain scans(细看,审视,浏览,扫描)and glucose tolerance tests, which measure how quickly sugar is absorbed from the blood by the body's tissues.Subjects with the poorest memory recollection,the team discovered,also displayed the poorest glucose tolerance.In addition,their brain scans showed more hippocampus shrinkage than those of subjects better able to absorb blood sugar.
    " Our study suggests that this impairment(损害、损伤)may contribute to the memory deficits (赤字、不足额)that occur as people age."Convit says."And it raises the intriguing possibility that improving glucose tolerance could reverse some age-associated problems in cognition."Exercise and weight control can help keep glucose levels in check(阻止、制止),so there may be one more reason to go to the gym.

    According to the last paragraph,what is the ultimate reason for going to the gym?
    A:To prevent hippocampus shrinkage.
    B:To control weight.
    C:To exercise.
    D:To control glucose levels.

    答案:D
    解析:
    To sleep.Perchance to file? 即当人体进入睡眠状态时,大脑对在白天形成的记忆进行组织和储存。
    第二段告诉我们,科学家分析了老鼠的脑电波,尤其是从somatosensory neocortex和hippocampus两个区域发出的脑电波。该段最后两句指出,这两个大脑区域的活动是互相作用的。第二段并没有说somatosensory neocortex或hippocampus起主导作用。
    第四段倒数第二句提供了答案。
    第四段最后一句中their brain scans,指上句中的subjects with the poorest memory recollection的大脑扫描,所以选择B项。
    锻炼身体和控制体重能保持葡萄糖水平,因此,去健身房就有了另外一个理由。

  • 第3题:

    Subsequnt events proved the man to be right.

    A:Earlier
    B:Later
    C:Previous
    D:Recent.

    答案:B
    解析:
    本句意思:后来发生的事证明这个人的观点是对的。subsequent意为“后来的,继……之后的”,与later(后来的)意思相近。earlier早先的;previous先前的;recent最近的。

  • 第4题:

    共用题干
    Sleep Lets Brain File Memories
    To sleep.Perchance to file?Findings published online this week by the Proceedings of the National Academy of Science further support the theory that brain organizes and stows memories formed during the day while the rest of the body is catching zzz's.
    Gyorgy Buzsaki of Rutgers University and his colleagues analyzed the brain waves of sleeping rats and mice.Specifically,they examined the electrical activity emanating from the somatosensory neocortex(an area that processes sensory information)and the hippocampus,which is a center for learning and memory.The scientists found that oscillations in brain waves from the two regions appear to be intertwined.So-called sleep spindles(bursts of activity from the neocortex)were followed tens of milliseconds later by beats in the hippocampus known as ripples.The team posits that this interplay between the two brain regions is a key step in memory consolidation.
    A second study,also published online this week by the Proceedings of the National Academy of Sciences,links age-associated memory decline to high glucose level.
    Previous research had shown that individuals with diabetes suffer from increased memory problems.In the new work,Antonio Convit of New York University School of Medicine and his collaborators studied 30 people whose average age was 69 to investigate whether sugar levels,which tend to increase with age,affect memory in healthy people as well.The scientists administered recall tests,brain scans and glucose tolerance tests,which measure how quickly sugar is absorbed from the blood by the body's issues.Subjects with the poorest memory recollection,the team discovered,also displayed the poorest glucose tolerance.In addition, their brain scans showed more hippocampus shrinkage than those of subjects better able to absorb blood sugar.
    "Our study suggests that this impairment may contribute to the memory deficits that occur as people age,"Convit says."And it raises the intriguing possibility that improving glucose tolerance could reverse some age一associated problems in cognition?”Exercise and weights control can help keep glucose level in check,so there may be one more reason to go to the gym.

    Which of the following statements is the nearest in meaning to the sentence"To sleep.Perchance to file?"
    A:Does brain arrange memories in useful order during sleep?
    B:Does brain have memories when one is sleeping?
    C:Does brain remember files after one falls asleep?
    D:Does brain work on files in sleep?

    答案:A
    解析:
    由文章第一段内容可知,科学新发现进一步支持了一种理论,即当人体进人睡眠状态时,大脑对在白天形成的记忆进行组织和储存。"Tosleep.Perchancetofile?”由莎士比亚的名句“Tosleep:perchancetodream."(睡眠也许要做梦)转化而来,它在本句的意思是:睡觉也许要记忆整理,故选A。
    第二段提到科学家分析了老鼠的脑电波,尤其是从躯体感觉新皮层和海马体两个区域发出的脑电波。该段最后指出,这两个大脑区域的活动是相互作用的;第二段并未提及两者中的任何一个起主要作用。
    由文章第四段倒数第二句话“Subjectswiththepoorestmemoryrecollection,theteamdiscovered,alsodisplayedthepoorestglucosetolerance.”可知,D项正确。
    第四段最后一句“…theirbrainscans…中their指上句中的“Subjectswiththepoorestmemoryrecollection",所以B项正确?
    文章最后一段提到,锻炼身体和控制体重能够限制葡萄糖浓度,因而,去健身房就有了另外一个原因。第二篇本篇文章主要讲述了大量发展中国家的艾滋病患者由于没有得到治疗而死去的情况,接着指出应加强对艾滋病患者的救治,并提出了三种具体的救治办法。

  • 第5题:

    Due to slow response times, a customer purchased additional memory. After the memory was installed,response time was not improved.  They complained to the pSeries technical specialist. Which of the following questions should be asked of this customer?()

    • A、Who recommended the memory purchase?
    • B、Have more users been added since the memory purchase?
    • C、Why were additional CPUs not ordered at the same time as the memory?
    • D、Did a performance analysis of peak periods show a memory bottleneck?

    正确答案:D

  • 第6题:

    Within the application MY_APP the following PREVIOUS VALUE expression references the sequence MY_SEQ: PREVIOUS VALUE FOR my_seq After which of the following events will the most recently generated value of MY_SEQ persist so that it can be returned to the active MY_APP application?()

    • A、After a ROLLBACK is issued
    • B、After the sequence is altered
    • C、After the sequence is dropped
    • D、After the current session ends

    正确答案:A

  • 第7题:

    Which of the following uses compression/decompression to increase the memory available for client workloads?()

    • A、PowerVM
    • B、VMControl
    • C、Active Memory Sharing
    • D、Active Memory Expansion

    正确答案:D

  • 第8题:

    Your database instance is functional for the past one month. The Automatic Workload Repository(AWR) snapshot retention is set to 7 and the STATISTICS_LEVEL initialization parameter is set to TYPICAL.  You receive a complaint about the poor performance of the database between 7 PM and 9 PM of theprevious day.  Choose two actions any of which can be referred to first to diagnose the problem. ()

    • A、Use the Active Session History report.
    • B、Use the AWR Compare Periods report.
    • C、Use an ADDM analysis between 7 PM and 9 PM of the previous day.
    • D、Use the AWR Compare Period report between 7 PM and 9 PM of the previous day.

    正确答案:B,C

  • 第9题:

    单选题
    It can be inferred from the passage that the pupils __________.
    A

    usually study a certain subject in greater details at home than at school

    B

    usually do not study a certain subject at home

    C

    study the subjects only at school

    D

    study a subject more deeply at school than at home


    正确答案: B
    解析:
    文中第四段第一句提到“…that pupils often delve somewhat deeply into a subject in school that has only been touched upon at home…”,由此可见孩子们在学校研究某一课题要比在家研究地更深入,故答案为D。

  • 第10题:

    单选题
    Within the application MY_APP the following PREVIOUS VALUE expression references the sequence MY_SEQ: PREVIOUS VALUE FOR my_seq After which of the following events will the most recently generated value of MY_SEQ persist so that it can be returned to the active MY_APP application?()
    A

    After a ROLLBACK is issued

    B

    After the sequence is altered

    C

    After the sequence is dropped

    D

    After the current session ends


    正确答案: B
    解析: 暂无解析

  • 第11题:

    问答题
    Passage 1Rapid Police Response  A  Police departments in the United States and Canada see it as central to their role that they respond to calls for help as quickly as possible. This ability to react fast has been greatly improved with the aid of technology. The telephone and police radio, already long in use, assist greatly in the reduction of police response time. In more recent times there has been the introduction of the “911” emergency system, which allows the public easier and faster contact with police, and the use of police computer systems, which assist police in planning patrols and assigning emergency requests to the police officers nearest to the scene of the emergency.  B  An important part of police strategy, rapid police response is seen by police officers and the public alike as offering tremendous benefits. The more obvious ones are the ability of police to apply first-aid lifesaving techniques quickly and the greater likelihood of arresting people who may have participated in a crime. It aids in identifying those who witnessed an emergency or crime, as well as in collecting evidence. The overall reputation of a police department, too, is enhanced if rapid response is consistent, and this in itself promotes the prevention of crime. Needless to say, rapid response offers the public some degree of satisfaction in its police force.  C  While these may be the desired consequences of rapid police response, actual research has not shown it to be so beneficial. For example, it has been demonstrated that rapid response leads to a greater likelihood of arrest only if responses are in the order of 1-2 minutes after a call is received by the police. When response times increase to 3-4 minutes-still quite a rapid response-the likelihood of an arrest is substantially reduced. Similarly, in identifying witnesses to emergencies or crimes, police are far more likely to be successful if they arrive at the scene no more than four minutes on average, after receiving a call for help. Yet both police officers and the public define “rapid response” as responding up to 10-12 minutes after calling the police for help.  D  Should police assume all the responsibility for ensuring a rapid response? Studies have shown that people tend to delay after an incident occurs before contacting the police. A crime victim may be injured and thus unable to call for help, for example, or no telephone may be available at the scene of the incident. Often, however, there is no such physical barrier to calling the police. Indeed, it is very common for crime victims to call their parents, their minister, or even their insurance company first. When the police are finally called in such cases the effectiveness of even the most rapid of responses is greatly diminished.  E  The effectiveness of rapid response also needs to be seen in light of the nature of the crime. For example, when someone rings the police after discovering their television set has been stolen from their home, there is little point, in terms of identifying those responsible for the crime, in ensuring a very rapid response. It is common in such burglary or theft cases that the victim discovers the crime hours, days, even weeks after it has occurred. When the victim is directly involved in the crime, however, as in the case of a robbery, rapid response, provided the victim was quickly able to contact the police, is more likely to be advantageous. Based on statistics comparing crimes that are discovered and those in which the victim is directly involved, Spelman and Brown (1981) suggest that three in four calls to police need not be met with rapid response.  F  It becomes clear that the importance of response time in collecting evidence or catching criminals after a crime must be weighed against a variety of factors. Yet because police department officials assume the public strongly demands rapid response, they believe that every call to the police should be met with it. Studies have shown, however, that while the public wants quick response, more important is the information given by the police to the person asking for help. If a caller is told the police will arrive in five minutes but in fact it takes ten minutes or more. Waiting the extra time can be extremely frustrating. But if a caller is told he or she will have to wait 10 minutes and the police indeed arrive within that time, the caller is normally satisfied. Thus, rather than emphasizing rapid response, the focus of energies should be on establishing realistic expectations in the caller and making every attempt to meet them.List of Headings  i    The presumptions of policy makers  ii    Need for more equitable parenting policies  iii    The impact of dual employment  iv    Comparison of employed and non-employed mothers  v    The benefits of balanced responsibility  vi    The unchanged role of the female parent  vii   The effect of stress on the female parent  viii   Disadvantages of parental equality  ix    The experts’ view of the male parent’s role  x    Commitment of mothers to their paid jobs  xi    Origins of anxiety in working mothers  Example      Answer  Section A.      …ii…  1. Section B  2. Section C  3. Section D  4. Section E  5. Section F

    正确答案: 1. vi
    (该段的主题句是第一句“Despite the significant increase…Australian research studies over the last l5 years are consistent in showing that divisions of labor for family work are very rigid indeed (Watson l991)”,其中rigid一词就暗含了这么多年澳大利亚家庭中的劳务分配没有发生多大的变化,再结合下文就可知道女性在家庭中的角色没有发生多少变化,所以本段大意概括准确的是选项vi。)
    2. iii
    (本段的主题句是第一句“Divisions of labor for family work are particularly problematic in families in which both parents are employed outside the home(dual-worker families)”, 意思是“对于那些父母都在外工作的家庭(双职工家庭)来说,家务劳力的分配就尤其成问题”,可知本段主要讲双职工家庭存在的问题,只有选项iii的表述与此相似,故选项iii。)
    3. xi
    (本段的主题句是第一句“The parental role is central to the stress, related anxiety reported by employed mothers, and a major contributor to such stress is their taking a greater role in child care (VandenHeuvel l993)”, 可知本段主要讲的是女性产生压力的原因是女性在家庭生活中承担更多的责任。所以应该选择xi。)
    4. ix
    (本段的主题句是第一句“Family therapists and social work researchers are increasingly defining family problems in terms of a lack of involvement and support from fathers and are concerned with difficulties involved in having fathers take responsibility for the solution of family and child behavior problems (Edgar and Glezer l986)”,可以看出前半句说明这段话是专家的观点,后半句说明这段话是关于男性在家庭中的作用的观点,因此,本段的大意就是专家们对于父亲角色的观点,因此,选项ix的说法是正确的。)
    5. v
    (本段主题句是首句“there are benefits for families considering a change to a fairer or more equitable division of the pleasures and pains of family life”,其中fairer和more equitable division与选项v中的balance表达一致,benefits一次也属于原词再现,因此,答案可以确定为v。)
    解析: 暂无解析

  • 第12题:

    单选题
    Which of the following features of Active Memory perform a regular check and cleanup of the status of DIMMs?()
    A

    Chipkill and Memory ProteXion

    B

    Chipkill and memory mirroring

    C

    Memory ProteXion and memory scrubbing

    D

    Hot spare memory and memory scrubbing


    正确答案: D
    解析: 暂无解析

  • 第13题:

    共用题干
    第二篇

    Sleep Lets Brain File Memories

    To sleep.Perchance to file?Findings published online this week by the proceedings of the National Academy of Sciences further support the theory that the brain organizes and stows memories formed during the day while the rest of the body is catching zzz's.
    Gyorgy Buzsaki of Rutgers University and his colleagues analyzed the brain waves of sleeping rats and mice. Specifically,they examined the electrical activity emanating(散发)from the somatosensory(耳、目、口等以外的)neocortex(新大脑皮层)(an area that processes sensory information) and the hippocampus(海马),which is a center for learning and memory. The scientists found that oscillations in brain waves from the two regions appear to be intertwined.So-called sleep spindles (bursts of activity from the neocortex)were followed tens of milliseconds later by beats in the hippocampus known as ripples.The team posits that this interplay between the two brain regions is a key step in memory consolidation.
    A second study,also published online this week by the proceedings of the National Academy of Sciences,links age-associated memory decline to high glucose levels.
    Previous research had shown that individuals with diabetes(糖尿病,多尿症)suffer from increased memory problems.In the new work,Antonio Convit of New York University School of Medicine and his collaborators studied 30 people whose average age was 69 to investigate whether sugar levels,which tend to increase with age,affect memory in healthy people as well.The scientists administered recall tests, brain scans(细看,审视,浏览,扫描)and glucose tolerance tests, which measure how quickly sugar is absorbed from the blood by the body's tissues.Subjects with the poorest memory recollection,the team discovered,also displayed the poorest glucose tolerance.In addition,their brain scans showed more hippocampus shrinkage than those of subjects better able to absorb blood sugar.
    " Our study suggests that this impairment(损害、损伤)may contribute to the memory deficits (赤字、不足额)that occur as people age."Convit says."And it raises the intriguing possibility that improving glucose tolerance could reverse some age-associated problems in cognition."Exercise and weight control can help keep glucose levels in check(阻止、制止),so there may be one more reason to go to the gym.

    What is the relation of memory to glucose tolerance,as is indicated by a research mentioned in Paragraph 4?
    A:People with poor memory have high glucose tolerance.
    B:People with good memory have low glucose tolerance.
    C:Memory level has nothing to do with glucose tolerance.
    D:The poorer the memory,the poorer glucose tolerance.

    答案:D
    解析:
    To sleep.Perchance to file? 即当人体进入睡眠状态时,大脑对在白天形成的记忆进行组织和储存。
    第二段告诉我们,科学家分析了老鼠的脑电波,尤其是从somatosensory neocortex和hippocampus两个区域发出的脑电波。该段最后两句指出,这两个大脑区域的活动是互相作用的。第二段并没有说somatosensory neocortex或hippocampus起主导作用。
    第四段倒数第二句提供了答案。
    第四段最后一句中their brain scans,指上句中的subjects with the poorest memory recollection的大脑扫描,所以选择B项。
    锻炼身体和控制体重能保持葡萄糖水平,因此,去健身房就有了另外一个理由。

  • 第14题:

    共用题干
    第二篇

    Sleep Lets Brain File Memories

    To sleep.Perchance to file?Findings published online this week by the proceedings of the National Academy of Sciences further support the theory that the brain organizes and stows memories formed during the day while the rest of the body is catching zzz's.
    Gyorgy Buzsaki of Rutgers University and his colleagues analyzed the brain waves of sleeping rats and mice. Specifically,they examined the electrical activity emanating(散发)from the somatosensory(耳、目、口等以外的)neocortex(新大脑皮层)(an area that processes sensory information) and the hippocampus(海马),which is a center for learning and memory. The scientists found that oscillations in brain waves from the two regions appear to be intertwined.So-called sleep spindles (bursts of activity from the neocortex)were followed tens of milliseconds later by beats in the hippocampus known as ripples.The team posits that this interplay between the two brain regions is a key step in memory consolidation.
    A second study,also published online this week by the proceedings of the National Academy of Sciences,links age-associated memory decline to high glucose levels.
    Previous research had shown that individuals with diabetes(糖尿病,多尿症)suffer from increased memory problems.In the new work,Antonio Convit of New York University School of Medicine and his collaborators studied 30 people whose average age was 69 to investigate whether sugar levels,which tend to increase with age,affect memory in healthy people as well.The scientists administered recall tests, brain scans(细看,审视,浏览,扫描)and glucose tolerance tests, which measure how quickly sugar is absorbed from the blood by the body's tissues.Subjects with the poorest memory recollection,the team discovered,also displayed the poorest glucose tolerance.In addition,their brain scans showed more hippocampus shrinkage than those of subjects better able to absorb blood sugar.
    " Our study suggests that this impairment(损害、损伤)may contribute to the memory deficits (赤字、不足额)that occur as people age."Convit says."And it raises the intriguing possibility that improving glucose tolerance could reverse some age-associated problems in cognition."Exercise and weight control can help keep glucose levels in check(阻止、制止),so there may be one more reason to go to the gym.

    What is the result of the experiment with rats and mice carried out at Rutgers University?
    A:The electrical activity is emanating from the somatosensory neocortex.
    B:Oscillations in brain waves are from hippocampus.
    C:Somatosensory neocortex and hippocampus work together in memory consolidation.
    D:Somatosensory neocortex plays a primary role in memory consolidation.

    答案:C
    解析:
    To sleep.Perchance to file? 即当人体进入睡眠状态时,大脑对在白天形成的记忆进行组织和储存。
    第二段告诉我们,科学家分析了老鼠的脑电波,尤其是从somatosensory neocortex和hippocampus两个区域发出的脑电波。该段最后两句指出,这两个大脑区域的活动是互相作用的。第二段并没有说somatosensory neocortex或hippocampus起主导作用。
    第四段倒数第二句提供了答案。
    第四段最后一句中their brain scans,指上句中的subjects with the poorest memory recollection的大脑扫描,所以选择B项。
    锻炼身体和控制体重能保持葡萄糖水平,因此,去健身房就有了另外一个理由。

  • 第15题:

    共用题干
    Sleep Lets Brain File Memories
    To sleep.Perchance to file?Findings published online this week by the Proceedings of the National Academy of Science further support the theory that brain organizes and stows memories formed during the day while the rest of the body is catching zzz's.
    Gyorgy Buzsaki of Rutgers University and his colleagues analyzed the brain waves of sleeping rats and mice.Specifically,they examined the electrical activity emanating from the somatosensory neocortex(an area that processes sensory information)and the hippocampus,which is a center for learning and memory.The scientists found that oscillations in brain waves from the two regions appear to be intertwined.So-called sleep spindles(bursts of activity from the neocortex)were followed tens of milliseconds later by beats in the hippocampus known as ripples.The team posits that this interplay between the two brain regions is a key step in memory consolidation.
    A second study,also published online this week by the Proceedings of the National Academy of Sciences,links age-associated memory decline to high glucose level.
    Previous research had shown that individuals with diabetes suffer from increased memory problems.In the new work,Antonio Convit of New York University School of Medicine and his collaborators studied 30 people whose average age was 69 to investigate whether sugar levels,which tend to increase with age,affect memory in healthy people as well.The scientists administered recall tests,brain scans and glucose tolerance tests,which measure how quickly sugar is absorbed from the blood by the body's issues.Subjects with the poorest memory recollection,the team discovered,also displayed the poorest glucose tolerance.In addition, their brain scans showed more hippocampus shrinkage than those of subjects better able to absorb blood sugar.
    "Our study suggests that this impairment may contribute to the memory deficits that occur as people age,"Convit says."And it raises the intriguing possibility that improving glucose tolerance could reverse some age一associated problems in cognition?”Exercise and weights control can help keep glucose level in check,so there may be one more reason to go to the gym.

    In what way is memory related to hippocampus shrinkage.
    A:There is no relation between memory and hippocampus shrinkage.
    B:The more hippocampus shrinks,the poorer one's memory.
    C:The more hippocampus shrinks,the better one's memory.
    D:The less hippocampus shrinks,the poorer one's memory.

    答案:B
    解析:
    由文章第一段内容可知,科学新发现进一步支持了一种理论,即当人体进人睡眠状态时,大脑对在白天形成的记忆进行组织和储存。"Tosleep.Perchancetofile?”由莎士比亚的名句“Tosleep:perchancetodream."(睡眠也许要做梦)转化而来,它在本句的意思是:睡觉也许要记忆整理,故选A。
    第二段提到科学家分析了老鼠的脑电波,尤其是从躯体感觉新皮层和海马体两个区域发出的脑电波。该段最后指出,这两个大脑区域的活动是相互作用的;第二段并未提及两者中的任何一个起主要作用。
    由文章第四段倒数第二句话“Subjectswiththepoorestmemoryrecollection,theteamdiscovered,alsodisplayedthepoorestglucosetolerance.”可知,D项正确。
    第四段最后一句“…theirbrainscans…中their指上句中的“Subjectswiththepoorestmemoryrecollection",所以B项正确?
    文章最后一段提到,锻炼身体和控制体重能够限制葡萄糖浓度,因而,去健身房就有了另外一个原因。第二篇本篇文章主要讲述了大量发展中国家的艾滋病患者由于没有得到治疗而死去的情况,接着指出应加强对艾滋病患者的救治,并提出了三种具体的救治办法。

  • 第16题:

    共用题干
    Sleep Lets Brain File Memories
    To sleep.Perchance to file?Findings published online this week by the Proceedings of the National Academy of Science further support the theory that brain organizes and stows memories formed during the day while the rest of the body is catching zzz's.
    Gyorgy Buzsaki of Rutgers University and his colleagues analyzed the brain waves of sleeping rats and mice.Specifically,they examined the electrical activity emanating from the somatosensory neocortex(an area that processes sensory information)and the hippocampus,which is a center for learning and memory.The scientists found that oscillations in brain waves from the two regions appear to be intertwined.So-called sleep spindles(bursts of activity from the neocortex)were followed tens of milliseconds later by beats in the hippocampus known as ripples.The team posits that this interplay between the two brain regions is a key step in memory consolidation.
    A second study,also published online this week by the Proceedings of the National Academy of Sciences,links age-associated memory decline to high glucose level.
    Previous research had shown that individuals with diabetes suffer from increased memory problems.In the new work,Antonio Convit of New York University School of Medicine and his collaborators studied 30 people whose average age was 69 to investigate whether sugar levels,which tend to increase with age,affect memory in healthy people as well.The scientists administered recall tests,brain scans and glucose tolerance tests,which measure how quickly sugar is absorbed from the blood by the body's issues.Subjects with the poorest memory recollection,the team discovered,also displayed the poorest glucose tolerance.In addition, their brain scans showed more hippocampus shrinkage than those of subjects better able to absorb blood sugar.
    "Our study suggests that this impairment may contribute to the memory deficits that occur as people age,"Convit says."And it raises the intriguing possibility that improving glucose tolerance could reverse some age一associated problems in cognition?”Exercise and weights control can help keep glucose level in check,so there may be one more reason to go to the gym.

    What is the result of the experiment with rats and mice carried out at Rutgers University?
    A:The electrical activity is emanating from the somatosensory neocortex.
    B:Oscillations in brain waves are from hippocampus.
    C:Somatosensory neocortex and hippocampus work together in memory consolidation.
    D:Somatosensory neocortex plays a primary role in memory consolidation.

    答案:C
    解析:
    由文章第一段内容可知,科学新发现进一步支持了一种理论,即当人体进人睡眠状态时,大脑对在白天形成的记忆进行组织和储存。"Tosleep.Perchancetofile?”由莎士比亚的名句“Tosleep:perchancetodream."(睡眠也许要做梦)转化而来,它在本句的意思是:睡觉也许要记忆整理,故选A。
    第二段提到科学家分析了老鼠的脑电波,尤其是从躯体感觉新皮层和海马体两个区域发出的脑电波。该段最后指出,这两个大脑区域的活动是相互作用的;第二段并未提及两者中的任何一个起主要作用。
    由文章第四段倒数第二句话“Subjectswiththepoorestmemoryrecollection,theteamdiscovered,alsodisplayedthepoorestglucosetolerance.”可知,D项正确。
    第四段最后一句“…theirbrainscans…中their指上句中的“Subjectswiththepoorestmemoryrecollection",所以B项正确?
    文章最后一段提到,锻炼身体和控制体重能够限制葡萄糖浓度,因而,去健身房就有了另外一个原因。第二篇本篇文章主要讲述了大量发展中国家的艾滋病患者由于没有得到治疗而死去的情况,接着指出应加强对艾滋病患者的救治,并提出了三种具体的救治办法。

  • 第17题:

    A customer has a Power 770 running an SAP ERP workload on AIX 7. It has a single partition with 12 cores and 48GB of memory and the CPU is underutilized at 46% with 1000 users. Memory utilization is at 80%. The number of users will increase to 1700, increasing memory utilization by 37%. Which of the following supports this requirement?()

    • A、Active Memory Server
    • B、Active Memory Sharing
    • C、Active Memory Pooling
    • D、Active Memory Expansion

    正确答案:D

  • 第18题:

    A Power 720 has AIX 6.1 and Linux partitions.During normal workloads there is more than enough memory available to the LPARs.  During month-end processing one partition becomes memory constrained.      What can help overcome this situation?()

    • A、Active Memory Sharing (AMS)
    • B、Active Memory Expansion (AME)
    • C、Integrated Virtual Memory (IVM)
    • D、Memory Capacity on Demand (CoD)

    正确答案:A

  • 第19题:

    Which of the following features of Active Memory perform a regular check and cleanup of the status of DIMMs?()

    • A、Chipkill and Memory ProteXion
    • B、Chipkill and memory mirroring
    • C、Memory ProteXion and memory scrubbing
    • D、Hot spare memory and memory scrubbing

    正确答案:C

  • 第20题:

    单选题
    Due to slow response times, a customer purchased additional memory. After the memory was installed,response time was not improved.  They complained to the pSeries technical specialist. Which of the following questions should be asked of this customer?()
    A

    Who recommended the memory purchase?

    B

    Have more users been added since the memory purchase?

    C

    Why were additional CPUs not ordered at the same time as the memory?

    D

    Did a performance analysis of peak periods show a memory bottleneck?


    正确答案: C
    解析: 暂无解析

  • 第21题:

    单选题
    As manifested in the experimental study, rapid eye movement is characterized by ______.
    A

    intensely active brainwave traces

    B

    subjects’ quicker response times

    C

    complicated memory patterns

    D

    revival of events in the previous day


    正确答案: A
    解析:
    细节理解题。答案出自第二段:The particular stage of sleep in which the Belgian group is interested in is rapid eye movement(REM)sleep, when brain and body are active,heart rate and blood pressure increase, the eyes move back and forth behind the eyelids as if watching a movie, and brainwave traces resemble those of wakefulness.

  • 第22题:

    问答题
    The movement to establish women’s issues as important subjects of study have had a profound impact on the           A                      B       Ccurricula offered in colleges today. No error          D          E

    正确答案: C
    解析:
    谓语动词的主语是单数名词movement,所以谓语动词应改为has led。

  • 第23题:

    单选题
    Most parents encourage their children to take an active part in social events,()those events do not interfere with their studies.
    A

    lest

    B

    though

    C

    unless

    D

    provided


    正确答案: A
    解析: 暂无解析

  • 第24题:

    单选题
    An application vendor wants to choose a fault tolerant platform for their new application.  The application benefits from multiple processors and has been tested on Red Hat Advanced Server 3.  To determine the memory requirements for the application, which of the following is the best procedure?()
    A

    The application should be tested and baselines should be measured with simulated user loads.

    B

    The application should be tested with the minimum amount of memory then increase the memory in increments until an acceptable response is achieved.

    C

    The application should be tested with differing amounts of memory and the fastest response time is reached it should be used as the acceptable configuration.

    D

    The application should be tested with the maximum amount of memory then decrease the memory in increments until an acceptable price/performance ratio is reached.


    正确答案: D
    解析: 暂无解析