Lying under the skull, the human brain contains an average of the ten billion nerve cells called（）.AneuronsBnerve systemCnervesDcerebral cortex
Lying under the skull, the human brain contains an average of the ten billion nerve cells called（）.
Aneurons
Bnerve system
Cnerves
Dcerebral cortex
参考解析
略
相关考题：
The parasympathetic nucleus located in the middle brain is the()。 A、oculomotor nucleusB、accessory nucleus of oculomotor nerveC、superior salivatory nucleusD、inferior salivatory nucleusE、dorsal nucleus of vagus nerve
____________, Newton was thinking and thinking.A、He lied under the apple treeB、Laying under the apple treeC、He laid under the apple treeD、Lying under the apple tree
The author uses the example of a monkey to argue that robots areA expected to copy human brain in internal structure.B able to perceive abnormalities immediately.C far less able than human brain in focusing on relevant information.D best used in a controlled environment.
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.Doctor Dully believed that______.A:he found the exact cause of learning disabilitiesB:the problem of learning disabilities did not lie in the left side of the brainC:the problem of learning disabilities resulted from the left side of the brainD:the problem of learning disabilities was not limited to 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.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
The method works best cases where total deafness is due to malfunctioning of the ear’s sensory cells.There must be sufficient functioning nerve fibers available to transmit the message to the brain（ ）;there are generally no more than 10 percent remaining in most cases,since they tend to atrophy with disuse.A.fortunatelyB.spontaneouslyC.basicallyD.unfortunately
How much on average is the European Tissue business worth a month?__________A.Around 8.5 billion eurosB.About 10 million dollarsC.About 708 million eurosD.Around 833 billion dollars
共用题干Parkinson's Disease1 Parkinson's disease affects the way you move.It happens when there is a problem with certain nerve cells in the brain. Normally , these nerve cells make an important chemical called dopamine（多巴胺）. Dopa-mine sends signals to the part of your brain that controls movement.It lets your muscles move smoothly and do what you want them to do.When you have Parkinson's,these nerve cells break down.Then you no longerhave enough dopamine,and you have trouble moving the way you want to.2 No one knows for sure what makes these nerve cells break down.But scientists are doing a lot of re-search to look for the answer. They are studying many possible causes,including aging and poisons in the en- vironment.Abnormal genes seem to lead to Parkinson's disease in some people.But so far,there is not enough proof to show that it is always inherited.3 Tremor（颤抖）may be the first symptom you notice.It is one of the most common signs of the disease,although not everyone has it.Tremor often starts in just one arm or leg or only on one side of the body.It may be worse when you are awake but not moving the affected arm or leg. It may get better when you move the limb or when you are asleep.In time,Parkinson's affects muscles all through your body,so it can lead to problems like trouble swallowing or constipation（便秘）.In the later stages of the disease , a person with Parkinson's may have a fixed or blank expression,trouble speaking,and other problems.Some people also have a decrease in mental skills.4 At this time,there is no cure for Parkinson's disease.But there are several types of medicines that can control the symptoms and make the disease easier to live with.You may not even need treatment if your symptoms are mild.Your doctor may wait to prescribe medicines until your symptoms start to get in the way of your daily life.Your doctor will adjust your medicines as your symptoms get worse.You may need to take several medicines to get the best results.You'll find it hard to move the way you want to__________.A:what affects muscles all through your bodyB:if there isn't enough dopamine in your bodyC:which cannot be cured yetD:which may be the first symptom you noticeE:if you have a fixed or blank expression F: what causes Parkinson's disease
共用题干Parkinson's Disease1 Parkinson's disease affects the way you move.It happens when there is a problem with certain nerve cells in the brain. Normally , these nerve cells make an important chemical called dopamine（多巴胺）. Dopa-mine sends signals to the part of your brain that controls movement.It lets your muscles move smoothly and do what you want them to do.When you have Parkinson's,these nerve cells break down.Then you no longerhave enough dopamine,and you have trouble moving the way you want to.2 No one knows for sure what makes these nerve cells break down.But scientists are doing a lot of re-search to look for the answer. They are studying many possible causes,including aging and poisons in the en- vironment.Abnormal genes seem to lead to Parkinson's disease in some people.But so far,there is not enough proof to show that it is always inherited.3 Tremor（颤抖）may be the first symptom you notice.It is one of the most common signs of the disease,although not everyone has it.Tremor often starts in just one arm or leg or only on one side of the body.It may be worse when you are awake but not moving the affected arm or leg. It may get better when you move the limb or when you are asleep.In time,Parkinson's affects muscles all through your body,so it can lead to problems like trouble swallowing or constipation（便秘）.In the later stages of the disease , a person with Parkinson's may have a fixed or blank expression,trouble speaking,and other problems.Some people also have a decrease in mental skills.4 At this time,there is no cure for Parkinson's disease.But there are several types of medicines that can control the symptoms and make the disease easier to live with.You may not even need treatment if your symptoms are mild.Your doctor may wait to prescribe medicines until your symptoms start to get in the way of your daily life.Your doctor will adjust your medicines as your symptoms get worse.You may need to take several medicines to get the best results.Paragraph 1__________A:Means of Diagnosis of the DiseaseB:Tips for Patients With the DiseaseC:Common Treatment for the DiseaseD:Definition of Parkinson's DiseaseE:Possible Causes of the DiseaseF: Typical Symptoms of the Disease
共用题干Albert Einstein's Brain1.It doesn't take an Einstein to recognize that Albert Einstein's brain was very different from yours and mine.The gray matter housed inside that shaggy head managed to revolutionize our concepts of time,space,motion一the very foundations of physical reality一not just once but several times during his astonishing career. Yet while there clearly had to be something remarkable about Einstein's brain,the pathologist who removed it from the great physicist's skull after his death reported that the organ was,to all appearances,well within the normal range一no bigger or heavier than anyone else's.2.But a new analysis of Einstein's brain by Canadian scientists,reported in the current Lancet, reveals that it has some distinctive physical characteristics after all. A portion of the brain that governs mathematical ability and spatial reasoning一two key ingredients to the sort of thinking Einstein did best一was significantly larger than average and may also have had more interconnections among its cells,which could have allowed them to work together more effectively.3.In 1996,Harvey gave much of his data and a significant fraction of the tissue itself to Dr. Sandra Witelson,a neuroscientist who maintains a"brain bank"at McMaster for comparative studies of brain structure and function.These normal,undiseased brains,willed to science by people whose intelligence had been carefully measured before death, gave Witelson a solid set of benchmarks against which to measure the seat of Einstein's brilliant thoughts.Not only was Einstein's inferior parietal region unusually bulky the scientists found,but a feature called the Sylvian fissure was much smaller than average.Without this groove that normally slices through the tissue,the brain cells were packed close together,permitting more interconnections一which in principle can permit more cross-referencing of information and idea, leading to great leaps of insight.4.That's the idea,anyway.But while it's quite plausible according to current neurological theory,that doesn't necessarily,make it true.We know Einstein was a genius,and we now know that his brain was physically different from the average.But none of this proves a cause-and-effect relationship."What you really need,"says McLean's Benes,"is to look at the brains of a number of mathematical geniuses to see if the same abnormalities are present."5.Even if they are,it's possible that the bulked一up brains are a result of strenuous mental exercise,not an inherent feature that makes genius possible.Bottom line:we still don't know whether Einstein was born with an extraordinary mind or whether he earned it,one brilliant idea at a time.The structure of brain________.A:that doesn't necessarily make it trueB:the cells of mathematicsC:was born with an extraordinary mind or he earned itD:allow the cells work together more effectivelyE:is the same as the averages in size and weight
共用题干Albert Einstein's Brain1.It doesn't take an Einstein to recognize that Albert Einstein's brain was very different from yours and mine.The gray matter housed inside that shaggy head managed to revolutionize our concepts of time,space,motion一the very foundations of physical reality一not just once but several times during his astonishing career. Yet while there clearly had to be something remarkable about Einstein's brain,the pathologist who removed it from the great physicist's skull after his death reported that the organ was,to all appearances,well within the normal range一no bigger or heavier than anyone else's.2.But a new analysis of Einstein's brain by Canadian scientists,reported in the current Lancet, reveals that it has some distinctive physical characteristics after all. A portion of the brain that governs mathematical ability and spatial reasoning一two key ingredients to the sort of thinking Einstein did best一was significantly larger than average and may also have had more interconnections among its cells,which could have allowed them to work together more effectively.3.In 1996,Harvey gave much of his data and a significant fraction of the tissue itself to Dr. Sandra Witelson,a neuroscientist who maintains a"brain bank"at McMaster for comparative studies of brain structure and function.These normal,undiseased brains,willed to science by people whose intelligence had been carefully measured before death, gave Witelson a solid set of benchmarks against which to measure the seat of Einstein's brilliant thoughts.Not only was Einstein's inferior parietal region unusually bulky the scientists found,but a feature called the Sylvian fissure was much smaller than average.Without this groove that normally slices through the tissue,the brain cells were packed close together,permitting more interconnections一which in principle can permit more cross-referencing of information and idea, leading to great leaps of insight.4.That's the idea,anyway.But while it's quite plausible according to current neurological theory,that doesn't necessarily,make it true.We know Einstein was a genius,and we now know that his brain was physically different from the average.But none of this proves a cause-and-effect relationship."What you really need,"says McLean's Benes,"is to look at the brains of a number of mathematical geniuses to see if the same abnormalities are present."5.Even if they are,it's possible that the bulked一up brains are a result of strenuous mental exercise,not an inherent feature that makes genius possible.Bottom line:we still don't know whether Einstein was born with an extraordinary mind or whether he earned it,one brilliant idea at a time.We don't know whether Einstein________.A:that doesn't necessarily make it trueB:the cells of mathematicsC:was born with an extraordinary mind or he earned itD:allow the cells work together more effectivelyE:is the same as the averages in size and weight
共用题干Albert Einstein's Brain1.It doesn't take an Einstein to recognize that Albert Einstein's brain was very different from yours and mine.The gray matter housed inside that shaggy head managed to revolutionize our concepts of time,space,motion一the very foundations of physical reality一not just once but several times during his astonishing career. Yet while there clearly had to be something remarkable about Einstein's brain,the pathologist who removed it from the great physicist's skull after his death reported that the organ was,to all appearances,well within the normal range一no bigger or heavier than anyone else's.2.But a new analysis of Einstein's brain by Canadian scientists,reported in the current Lancet, reveals that it has some distinctive physical characteristics after all. A portion of the brain that governs mathematical ability and spatial reasoning一two key ingredients to the sort of thinking Einstein did best一was significantly larger than average and may also have had more interconnections among its cells,which could have allowed them to work together more effectively.3.In 1996,Harvey gave much of his data and a significant fraction of the tissue itself to Dr. Sandra Witelson,a neuroscientist who maintains a"brain bank"at McMaster for comparative studies of brain structure and function.These normal,undiseased brains,willed to science by people whose intelligence had been carefully measured before death, gave Witelson a solid set of benchmarks against which to measure the seat of Einstein's brilliant thoughts.Not only was Einstein's inferior parietal region unusually bulky the scientists found,but a feature called the Sylvian fissure was much smaller than average.Without this groove that normally slices through the tissue,the brain cells were packed close together,permitting more interconnections一which in principle can permit more cross-referencing of information and idea, leading to great leaps of insight.4.That's the idea,anyway.But while it's quite plausible according to current neurological theory,that doesn't necessarily,make it true.We know Einstein was a genius,and we now know that his brain was physically different from the average.But none of this proves a cause-and-effect relationship."What you really need,"says McLean's Benes,"is to look at the brains of a number of mathematical geniuses to see if the same abnormalities are present."5.Even if they are,it's possible that the bulked一up brains are a result of strenuous mental exercise,not an inherent feature that makes genius possible.Bottom line:we still don't know whether Einstein was born with an extraordinary mind or whether he earned it,one brilliant idea at a time.Paragraph 3________A:The InformationB:The Different in StructureC:The ConclusionD:The Research in Einstein's BrainE:Normal Brain in Size and Weight
共用题干第二篇Bone Marrow TransplantationBone marrow is the spongy tissue inside some of your bones,such as your hip and thigh bones. It contains immature cells,called stem cells.The stem cells can develop into the red blood cells that carry oxygen through your body,the white blood cells that fight infections,and the platelets that help with blood clotting.If there is a problem with your bone marrow,a transplant can give you healthy new marrow. You could need a transplant because of a disease,such as bone marrow diseases or cancers like leukemia kemia or lymphoma.Or you might need one if a strong cancer treatment kills your healthy blood cells.People with cancer sometimes donate bone marrow before treatment to be transplanted later. But often the new marrow comes from a donor,either a close family member or someone unrelated.The healthy cells for a transplant can come from three sources:bone marrow;peripheral (circulating) blood that has an increased number of healthy blood-forming cells(also called peripheral blood stem cells or PBSC);umbilical cord blood that is collected after a baby is born.If you need an allogeneic transplant,your doctor will look for a marrow donor or cord blood unit that matches your HLA tissue type.HLA stands for human leukocyte antigen,a markei your immune system uses to recognize which cells belong in your body and which do not.Before your body can receive the healthy cells,the diseased cells must be destroyed.This is done using chemotherapy and sometimes radiation. The destruction of diseased cells is called a preparative regimen or a conditioning regimen.On the day of transplant,the cells from the marrow donor or cord blood unit are infused intravenously(go into your body through a large vein).These healthy cells move into the spaces inside your bones where they create new marrow. They grow and make healthy new red blood cells,white blood cells,and platelets.Before receiving healthy cells,diseased cells must_________.A:undergo chemotherapyB:go through radiationC:be preparedD:be wrecked
共用题干第二篇Bone Marrow TransplantationBone marrow is the spongy tissue inside some of your bones,such as your hip and thigh bones. It contains immature cells,called stem cells.The stem cells can develop into the red blood cells that carry oxygen through your body,the white blood cells that fight infections,and the platelets that help with blood clotting.If there is a problem with your bone marrow,a transplant can give you healthy new marrow. You could need a transplant because of a disease,such as bone marrow diseases or cancers like leukemia kemia or lymphoma.Or you might need one if a strong cancer treatment kills your healthy blood cells.People with cancer sometimes donate bone marrow before treatment to be transplanted later. But often the new marrow comes from a donor,either a close family member or someone unrelated.The healthy cells for a transplant can come from three sources:bone marrow;peripheral (circulating) blood that has an increased number of healthy blood-forming cells(also called peripheral blood stem cells or PBSC);umbilical cord blood that is collected after a baby is born.If you need an allogeneic transplant,your doctor will look for a marrow donor or cord blood unit that matches your HLA tissue type.HLA stands for human leukocyte antigen,a markei your immune system uses to recognize which cells belong in your body and which do not.Before your body can receive the healthy cells,the diseased cells must be destroyed.This is done using chemotherapy and sometimes radiation. The destruction of diseased cells is called a preparative regimen or a conditioning regimen.On the day of transplant,the cells from the marrow donor or cord blood unit are infused intravenously(go into your body through a large vein).These healthy cells move into the spaces inside your bones where they create new marrow. They grow and make healthy new red blood cells,white blood cells,and platelets.Healthy stem cells may come from the following sources EXCEPT__________.A:peripheral blood stem cellsB:baby bloodC:bone marrowD:cord blood
共用题干第二篇Bone Marrow TransplantationBone marrow is the spongy tissue inside some of your bones,such as your hip and thigh bones. It contains immature cells,called stem cells.The stem cells can develop into the red blood cells that carry oxygen through your body,the white blood cells that fight infections,and the platelets that help with blood clotting.If there is a problem with your bone marrow,a transplant can give you healthy new marrow. You could need a transplant because of a disease,such as bone marrow diseases or cancers like leukemia kemia or lymphoma.Or you might need one if a strong cancer treatment kills your healthy blood cells.People with cancer sometimes donate bone marrow before treatment to be transplanted later. But often the new marrow comes from a donor,either a close family member or someone unrelated.The healthy cells for a transplant can come from three sources:bone marrow;peripheral (circulating) blood that has an increased number of healthy blood-forming cells(also called peripheral blood stem cells or PBSC);umbilical cord blood that is collected after a baby is born.If you need an allogeneic transplant,your doctor will look for a marrow donor or cord blood unit that matches your HLA tissue type.HLA stands for human leukocyte antigen,a markei your immune system uses to recognize which cells belong in your body and which do not.Before your body can receive the healthy cells,the diseased cells must be destroyed.This is done using chemotherapy and sometimes radiation. The destruction of diseased cells is called a preparative regimen or a conditioning regimen.On the day of transplant,the cells from the marrow donor or cord blood unit are infused intravenously(go into your body through a large vein).These healthy cells move into the spaces inside your bones where they create new marrow. They grow and make healthy new red blood cells,white blood cells,and platelets.We can infer from this passage that_________.A:bone marrow transplantation requires five proceduresB:bone marrow transplantation is complexC:people with leukemia must need transplantationD:people with cancer must donate bone marrow before treatment
共用题干第二篇Bone Marrow TransplantationBone marrow is the spongy tissue inside some of your bones,such as your hip and thigh bones. It contains immature cells,called stem cells.The stem cells can develop into the red blood cells that carry oxygen through your body,the white blood cells that fight infections,and the platelets that help with blood clotting.If there is a problem with your bone marrow,a transplant can give you healthy new marrow. You could need a transplant because of a disease,such as bone marrow diseases or cancers like leukemia kemia or lymphoma.Or you might need one if a strong cancer treatment kills your healthy blood cells.People with cancer sometimes donate bone marrow before treatment to be transplanted later. But often the new marrow comes from a donor,either a close family member or someone unrelated.The healthy cells for a transplant can come from three sources:bone marrow;peripheral (circulating) blood that has an increased number of healthy blood-forming cells(also called peripheral blood stem cells or PBSC);umbilical cord blood that is collected after a baby is born.If you need an allogeneic transplant,your doctor will look for a marrow donor or cord blood unit that matches your HLA tissue type.HLA stands for human leukocyte antigen,a markei your immune system uses to recognize which cells belong in your body and which do not.Before your body can receive the healthy cells,the diseased cells must be destroyed.This is done using chemotherapy and sometimes radiation. The destruction of diseased cells is called a preparative regimen or a conditioning regimen.On the day of transplant,the cells from the marrow donor or cord blood unit are infused intravenously(go into your body through a large vein).These healthy cells move into the spaces inside your bones where they create new marrow. They grow and make healthy new red blood cells,white blood cells,and platelets.The new marrow usually comes from__________.A:people with cancerB:a family memberC:an organ donorD:a relative or a stranger
The brain’s neurological specialization for language is called linguistic I （）， which is specific to human beings.
Lying under the skull, the human brain contains an average of the ten billion nerve cells called（）.A、neuronsB、nerve systemC、nervesD、cerebral cortex
单选题Lying under the skull, the human brain contains an average of the ten billion nerve cells called（）.AneuronsBnerve systemCnervesDcerebral cortex
填空题The brain’s neurological specialization for language is called linguistic I （）， which is specific to human beings.
单选题The author uses the example of a monkey to argue that robots are ______.Aexpected to copy human brain in internal structureBable to perceive abnormalities immediatelyCfar less able than human brain in focusing on relevant informationDbest used in a controlled environment
单选题The evidence of electrical activity and other changes in brain cells after the outside stimulus has been got by observing.Aexposed cat brainsBthe human brainsCcat brains and the human brainsDexposed cat brains and the human brains
单选题According to the passage, which of the following is TRUE?ACell phone use is dangerous.BCell phone use causes cancer.CThe human brain is an electromagnetic field.DThere are about 5 billion cell phone users in the world right now.
单选题According to the passage, which of the following statements is true?AThe imaging techniques not only measure nerve-cell activity but also the extra flow of blood that surges to the most active brain areas.BThe imaging techniques do not measure nerve-cell activity directly, but measure the flow of blood that surges to the most active brain areas.CThe imaging techniques measure the extra flow of blood that surges to the most active brain areas.DThe imaging techniques measure all the activities of the living brain.