问答题The study was means to examine how the brain reacts to electromagnetic fields caused by wireless phone signals.
问答题
The study was means to examine how the brain reacts to electromagnetic fields caused by wireless phone signals.
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共用题干Learning DisabilitiesLearning disabilities are very common.They affect perhaps 1 0 percent of all children.Four times as many boys as girls have learning disabilities.Since about 1970,new research has helped brain scientists understand these problems better.Scientists now know there are many different kinds of learning disabilities and that they are caused by many different things.There is no longer any question that all learning disabilities result from differences in the way the brain is organized.You cannot look at a child and tell if he or she has a learning disability.There is no outward sign of the disorder.So some researchers began looking at the brain itself to learn what might be wrong.In one study,researchers examined the brain of a learning-disabled person who had died in an accident. They found two unusual things.One involved cells in the left side of the brain,which control language.These cells normally are white.In the learning disabled person,however,these cells were gray.The researchers also found that many of the nerve cells were not in a line the way they should have been.The nerve cells were mixed together.The study was carried out under the guidance of Norman Geschwind,an early expert on learning disabilities, Doctor Geschwind proposed that learning disabilities resulted mainly from problems in the left side of the brain. He believed this side of the brain failed to develop normally.Probably,he said,nerve cells there did not connect as they should.So the brain was like an electrical device in which the wires were crossed.Other researchers did not examine brain tissue.Instead,they measured the brain's electrical activity and made a map of the electrical signals.Frank Dully experimented with this technique at Children's Hospital Medical Center in Boston.Doctor Dully found large differences in the brain activity of normal children and those with reading problems.The differences appeared throughout the brain.Doctor Dully said his research is evidence that disabilities involve damage to a wide area of the brain,not just the left side.Scientists found that the brain cells of a learning-disabled person differ from those of a normal person in______.A:structure and functionB:color and functionC:size and arrangementD:color and arrangement
共用题干Learning DisabilitiesLearning disabilities are very common.They affect perhaps 1 0 percent of all children.Four times as many boys as girls have learning disabilities.Since about 1970,new research has helped brain scientists understand these problems better.Scientists now know there are many different kinds of learning disabilities and that they are caused by many different things.There is no longer any question that all learning disabilities result from differences in the way the brain is organized.You cannot look at a child and tell if he or she has a learning disability.There is no outward sign of the disorder.So some researchers began looking at the brain itself to learn what might be wrong.In one study,researchers examined the brain of a learning-disabled person who had died in an accident. They found two unusual things.One involved cells in the left side of the brain,which control language.These cells normally are white.In the learning disabled person,however,these cells were gray.The researchers also found that many of the nerve cells were not in a line the way they should have been.The nerve cells were mixed together.The study was carried out under the guidance of Norman Geschwind,an early expert on learning disabilities, Doctor Geschwind proposed that learning disabilities resulted mainly from problems in the left side of the brain. He believed this side of the brain failed to develop normally.Probably,he said,nerve cells there did not connect as they should.So the brain was like an electrical device in which the wires were crossed.Other researchers did not examine brain tissue.Instead,they measured the brain's electrical activity and made a map of the electrical signals.Frank Dully experimented with this technique at Children's Hospital Medical Center in Boston.Doctor Dully found large differences in the brain activity of normal children and those with reading problems.The differences appeared throughout the brain.Doctor Dully said his research is evidence that disabilities involve damage to a wide area of the brain,not just the left side.Which of the following is NOT mentioned in the passage?A:Learning disabilities may result from the unknown area of the brain.B:Learning disabilities may result from damage to a wide area of the brain.C:Learning disabilities may result from abnormal organization of the brain cells.D:Learning disabilities may result from problems in the left side of the brain.
共用题干Learning DisabilitiesLearning disabilities are very common.They affect perhaps 1 0 percent of all children.Four times as many boys as girls have learning disabilities.Since about 1970,new research has helped brain scientists understand these problems better.Scientists now know there are many different kinds of learning disabilities and that they are caused by many different things.There is no longer any question that all learning disabilities result from differences in the way the brain is organized.You cannot look at a child and tell if he or she has a learning disability.There is no outward sign of the disorder.So some researchers began looking at the brain itself to learn what might be wrong.In one study,researchers examined the brain of a learning-disabled person who had died in an accident. They found two unusual things.One involved cells in the left side of the brain,which control language.These cells normally are white.In the learning disabled person,however,these cells were gray.The researchers also found that many of the nerve cells were not in a line the way they should have been.The nerve cells were mixed together.The study was carried out under the guidance of Norman Geschwind,an early expert on learning disabilities, Doctor Geschwind proposed that learning disabilities resulted mainly from problems in the left side of the brain. He believed this side of the brain failed to develop normally.Probably,he said,nerve cells there did not connect as they should.So the brain was like an electrical device in which the wires were crossed.Other researchers did not examine brain tissue.Instead,they measured the brain's electrical activity and made a map of the electrical signals.Frank Dully experimented with this technique at Children's Hospital Medical Center in Boston.Doctor Dully found large differences in the brain activity of normal children and those with reading problems.The differences appeared throughout the brain.Doctor Dully said his research is evidence that disabilities involve damage to a wide area of the brain,not just the left side.According to the passage we can conclude that further researches should be made______.A:to help learning-disabled children to develop their intelligenceB:to study how children learn to read and write,and use numbersC:to investigate possible influences on brain development and organizationD:to explore how the left side of the brain functions in language learning
共用题干Read with Greater SpeedDo you have difficulty reading in class?if so,a special reading program that helpsmatch sounds with letters could speed up your brain.At least one out of every five elementary school students in the US has trouble learningto read,even when the students are good at other subjects._________(1)Researchers from Yale University,US,studied a group of children from New Yorkand Connecticut State.As part of the study,37 struggling readers received special tutoring.Every day,instructors worked with them on recognizing how written letters representunits of sound called phonemes（音素）.__________(2)By the end of the school year,these children could read faster than before.They alsomade fewer mistakes,and understood more of what they read than they could earlier in theyear.As part of their study,the researchers used a special machine to take action photos of the students' brains._________(3)This is the same part of the brain that becomes active when goodreaders read.This activated brain area appears to include a structure that helps peoplerecognize familiar written words quickly. In lower level readers,this structure remainsinactive.A year later,the brain structure was still working hard in the students who had gonethrough the special tutoring,and they continued to do well in reading tests.________ (4)However,some researchers still doubt the study._________(5)_________（3）A:Many adults are interested in matching sounds with letters.B:The students also practiced reading aloud and spelling.C:The biggest challenge for many of these kids,scientists say,is matching sounds with letters.D:Another group in the study who went through a more traditional reading program didn't show the same progress.E:The pictures showed an increase in activity in the back of the brain on the left side.F:They believe that reading without making any noise or linking words to sounds is more efficient.
共用题干Read With Greater SpeedDo you have difficulty reading in class?If so,a special reading program that helpsmatch sounds with letters could speed up your brain.At least one out of every five elementary school students in the U.S. has troublelearnina to read .even when the students are good at other subjects.________(1)Researchers from Yale University,U.S.,studied a group of children trom New YorK and Connecticut State.As part of the study,37 struggling readers received special tutoring.Every day,instructors worked with them on recognizing how written letters representunits of sound called phonemes（音素）.________(2)By the end of the school year,these children could read faster than before.They also made fewer mistakes,and understood more of what they read than they coula earlier in theyear.As part of their study,the researchers used a special machine to take action photos ofthe students' brains.________(3)This is the same part of the brain that becomes active when goodreaders read.This activated brain area appears to include a structure that helps people recognize familiar written words quickly.In lower level readers,this structure remains inactive. A year later,the brain structure was still working hard in the students who had gone throughthe special tutoring,and they continued to do well in reading tests.________(4) However,some researchers still doubt the study.________(5)________(5)A:Many adults are interested in matching sounds with letters.B:The students also practiced reading aloud and spelling.C:The biggest challenge for many of these kids,scientists say,is matching sounds with letters.D:Another group in the study who went through a more traditional reading program didn't show the same progress.E:The pictures showed an increase in activity in the back of the brain on the left side.F:They believe that reading without making any noise or linking words to sounds is more efficient.
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共用题干Sleep Lets Brain File MemoriesTo 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?
（）,is the study of how words combine to form sentences and the rules which govern the formation of sentences.
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单选题The present growing interest in, sign language was stimulated by _____.Aa leading specialist in the study of liberal artsBan English teacher in a university for the deafCsome senior experts in American sign languageDa famous scholar in the human brain
单选题Scientific evidence from different fields of study demonstrates that in most humans the left hemisphere of the brain controls language.Aspectaculars Bdisciplines Cspectrums Dinstructions
填空题（）,is the study of how words combine to form sentences and the rules which govern the formation of sentences.
单选题The statement language acquisition might be our best hope (lines 68-69) means that ______.Athe ability to speak is a great asset to the survival of the human speciesBstudying how language is learned will help answer deeper questions about psychologyCthe study of linguistics is helping to make cognitive science a more popular subjectDan individual who does not learn to speak will not develop cognitive skillsEcognitive science has been given little notice until now
单选题The study of how sounds are put together and used to convey meaning in communication is ______ .AmorphologyBgeneral linguisticsCphonologyDsemantics
单选题Since the beginning of this century, more and more scientists have become interested in the way how the human brain works.ASince the beginningBhave becomeCinDthe way how
单选题By“held back (Line l) the author means“_______.Amade to remain in the same classBforced to study in the lower classCdrawn to their studiesDprevented from advancing
单选题The study highlights how our sense of right and wrong isn't just based on religion and philosophy, but also on the biology of our brain.Arising-up Bbring-upCuprising DUpbringing