Alzheimer's disease(老年痴呆症)affects millions of people around the world. American researchers say the disease will affect more than one hundred million people worldwide by the year twenty fifty. That would be four times the current number. Researchers and doctors have been studying Alzheimer's patients for a century. Yet the cause and the cure for the mental sickness are still unknown. However, some researchers have made important steps towards understanding it.
Several early signs of the disease involve memory and thought processes. At first, patients have trouble remembering little things. Later, they have trouble remembering more important things, such as the names of their children.
There are also some physical tests that might show who is at risk of developing Alzheimer's disease. The tests look for proteins in brain and spinal cord(脊髓) fluid. The proteins appear to be found only in people with the disease. The protein tests correctly identify the presence of the disease in about ninety percent of patients.
Now, a much simpler physical test to predict Alzheimer's risk has been developed. Researchers found that trouble with the sense of smell can be one of the first signs of Alzheimer's. Using this information, they developed a test in which people were asked to identify twelve familiar smells. These smells included cinnamon, black pepper, chocolate, paint thinner, and smoke.
The study continued for five years. During this period, the same people were asked to take several tests measuring their memory and thought abilities. Fifty percent of those who could not identify at least four of the smells in the first test had trouble with their memory and thinking in the next five years.
Another study has shown a possible way to reduce a person's chances of developing Alzheimer's disease in old age. Researchers in Chicago found that people who use their brains more often are less likely to develop Alzheimer's disease. Those who read a newspaper, or play chess or word games are about three times less likely to develop the condition.
Researchers say they still do not know what causes Alzheimer's disease. But they say these findings might help prevent the disease in the future.
1. Whats the main idea of the passage?
A. Some early signs of the Alzheimer's disease.
B. Some physical tests about Alzheimer's disease.
C. The research about Alzheimer's disease.
D. The patients of Alzheimer's disease.
2.Whats the current number of Alzheimers patients?
A. 100 million B. 25 million
C. 400 million D. 2050 million
3.What is not the early signs of the Alzheimer's disease according to the passage?
A. Poor memory
B. Proteins exist in the brain.
C. Trouble with the sense of smell.
D. Less use of the brain.
4.What does the underlined word it in paragraph 1 refer to?
A. Alzheimer's disease. B. Alzheimer's patients.
C. The cause and the cure. D. The research.
高二英语阅读理解中等难度题
Alzheimer's disease(老年痴呆症)affects millions of people around the world. American researchers say the disease will affect more than one hundred million people worldwide by the year twenty fifty. That would be four times the current number. Researchers and doctors have been studying Alzheimer's patients for a century. Yet the cause and the cure for the mental sickness are still unknown. However, some researchers have made important steps towards understanding it.
Several early signs of the disease involve memory and thought processes. At first, patients have trouble remembering little things. Later, they have trouble remembering more important things, such as the names of their children.
There are also some physical tests that might show who is at risk of developing Alzheimer's disease. The tests look for proteins in brain and spinal cord(脊髓) fluid. The proteins appear to be found only in people with the disease. The protein tests correctly identify the presence of the disease in about ninety percent of patients.
Now, a much simpler physical test to predict Alzheimer's risk has been developed. Researchers found that trouble with the sense of smell can be one of the first signs of Alzheimer's. Using this information, they developed a test in which people were asked to identify twelve familiar smells. These smells included cinnamon, black pepper, chocolate, paint thinner, and smoke.
The study continued for five years. During this period, the same people were asked to take several tests measuring their memory and thought abilities. Fifty percent of those who could not identify at least four of the smells in the first test had trouble with their memory and thinking in the next five years.
Another study has shown a possible way to reduce a person's chances of developing Alzheimer's disease in old age. Researchers in Chicago found that people who use their brains more often are less likely to develop Alzheimer's disease. Those who read a newspaper, or play chess or word games are about three times less likely to develop the condition.
Researchers say they still do not know what causes Alzheimer's disease. But they say these findings might help prevent the disease in the future.
1. Whats the main idea of the passage?
A. Some early signs of the Alzheimer's disease.
B. Some physical tests about Alzheimer's disease.
C. The research about Alzheimer's disease.
D. The patients of Alzheimer's disease.
2.Whats the current number of Alzheimers patients?
A. 100 million B. 25 million
C. 400 million D. 2050 million
3.What is not the early signs of the Alzheimer's disease according to the passage?
A. Poor memory
B. Proteins exist in the brain.
C. Trouble with the sense of smell.
D. Less use of the brain.
4.What does the underlined word it in paragraph 1 refer to?
A. Alzheimer's disease. B. Alzheimer's patients.
C. The cause and the cure. D. The research.
高二英语阅读理解中等难度题查看答案及解析
A super drug that could remove Alzheimer’s (老年痴呆症),heart disease and diabetes (糖尿病) and help people live to 100 is being developed by scientists. Their research is based on the identification of three genes that help prolong lives and prevent diseases which occur in old age. Medically controlling the proteins made by the “ longevity genes” will allow millions to live longer, predicts Dr Nir Barzilai.
Those whose DNA strongly features the three genes are 80 percent less likely to develop Alzheimer’s. The genes also fight against the deadly impact of smoking, poor diet, obesity and lack of exercise.
Already, several laboratories are working on a pill to imitate the benefits of the genes and Dr Barzilai thinks it could be tested within three years. The pill could remove some diseases that damage old age. “ The advantage of finding a gene that involves longevity is that we can develop a drug that will imitate exactly what this gene is doing,” he said.
Of the three longevity genes, two genes increase the production of so-called good cholesterol(胆固醇), which reduces the risk of heart disease. The third prevents diabetes. They were discovered by Dr Barzilai’s team while studying the DNA of 500 Ashkenazi Jews with an average age of 100. The chances of living that long are one in 10,000 but the group, which shared relatively few common ancestors, was 20 times more likely to hit the entury. Dr Barzilai said: “ 30 percent of them were obese or overweight and 30 percent smoked two acks of cigarettes a day for more than 40 years, however they can live to 100.”
But Andrew Ketteringham of the Alzheimer’s Society said: “Alzheimer’s disease, a most common disease, is likely to be caused by a combination of genetic disosition(遗传倾向), lifestyles and life events. Many genes are probably involved.
1.Some people are able to live to 100 years because of ______.
A. a magical medicine B. three special genes C. good living habits D. longevity proteins
2.Why does the discovery of the longevity genes mean a lot?
A. Because it can bring great benefits to scientific labs.
B. Because it can help people change their unhealthy genes
C. Because it helps produce a drug that can make people live longer.
D. Because it will help scientists build up a new branch of biology.
3. From Paragraph 4 we can infer that ________.
A. longevity genes can create good cholesterol.
B. the volunteers share some common ancestors
C. bad habits are likely to have no effect on the volunteers
D. longevity genes protect the volunteers against bad habits
4.What is Andrew Ketteringham’s attitude toward the study?
A. Positive B. Negative C. Critical D. Cautious
高二英语阅读理解简单题查看答案及解析
During the last fifteen years of my mother's life she suffered with Alzheimer's disease (老年痴呆). Until then she had been a bright, cheerful woman deeply interested and involved in the world around her. I would go home to visit her in Virginia and she would look at me in a puzzled way and ask, “Who are you?” I would answer, “I'm your son.” “Where do you live?” She would ask. “In California”, I would tell her. “Isn't that interesting,” she would say, “I have a son in California.”
She seemed simply forgetful and confused at the beginning of the disease, but later on she would go through periods of intense anxiety. She would pace through the house she had lived in most of her life crying uneasily that she wanted to go home. Or she would leave home and wander away if she were unattended for a short time.
Hoping to please her and put her mind at ease I would take her for a drive, visiting sites where she had lived as a child. In the yard of the hillside house in Shipman I sat in the car and admired the view of the old oaks and long green lawn. I pictured my mother there was a little girl playing with the pet lamb she had been so fond of. I looked to her for some response. She shook her head and said, “I want to go home.”
Over the years I have decided that what my mother was calling home was not a place, but a time. I suspect it was a time when she was much younger, when her children were still underfoot, when her husband was still vigorous and attentive.
Watching my mother's suffering set me wondering where I would have gone in mind if someday I couldn’t find home and wanted to go there. In this family we tend to be long-lived and we grow fuzzy (糊涂的) minded as the years go by. At eighty I have already noticed some alarming symptoms. My doctor says the forgetfulness is only natural and that it comes with age. Still the fear of Alzheimer's is haunting there. Someday if and when I become even more cloudy minded than I am now, unable to drive and unable to tell you where "home" is, my dear son, I expect I will ask you to take me home, I know you will do your best to find the place I need to be. I leave these notes for your guidance.
1.What's the main idea of the first two paragraphs?
A. The author’s mother suffered with serious Alzheimer's disease.
B. The author’s mother forgot who’s his son.
C. The author didn’t know how to cure his mother.
D. The author’s mother couldn’t find her home.
2.What is not the symptom of the author’s mother ?
A. cheerful B. confused C. forgetful D. uneasy
3. What’s the meaning of the underlined word “pictured”?
A. photographed B. appeared C. described D. painted
4.What can you infer from the third paragraph?
A. The author care much about his mother.
B. The author’s mother was fond of pet lambs.
C. The author saw a little girl playing with a pet lamb.
D. The author’s mother didn’t like her usual home.
5.What’s the best title of the passage?
A. Take Mother Home.
B. Everyone will suffer with Alzheimer's disease.
C. A story about a son and a mother.
D. Where Is Home?
高二英语阅读理解中等难度题查看答案及解析
During the last fifteen years of my mother's life she suffered with Alzheimer's disease (老年痴呆). Until then she had been a bright, cheerful woman deeply interested and involved in the world around her. I would go home to visit her in Virginia and she would look at me in a puzzled way and ask, “Who are you?” I would answer, “I'm your son.” “Where do you live?” She would ask. “In California”, I would tell her. “Isn't that interesting,” she would say, “I have a son in California.”
She seemed simply forgetful and confused at the beginning of the disease, but later on she would go through periods of intense anxiety. She would pace through the house she had lived in most of her life crying uneasily that she wanted to go home. Or she would leave home and wander away if she were unattended for a short time.
Hoping to please her and put her mind at ease, I would take her for a drive, visiting sites where she had lived as a child. In the yard of the hillside house in Shipman I sat in the car and admired the view of the old oaks and long green lawn. I pictured my mother there was a little girl playing with the pet lamb she had been so fond of. I looked to her for some response. She shook her head and said “ I want to go home.”
Over the years I have decided that what my mother was calling home was not a place, but a time. I suspect it was a time when she was much younger, when her children were still underfoot, when her husband was still vigorous and attentive.
Watching my mother's suffering set me wondering where I would have gone in mind if someday I couldn’t find home and wanted to go there. In this family we tend to be long-lived and we grow fuzzy (糊涂的) minded as the years go by. At eighty I have already noticed some alarming symptoms. My doctor says the forgetfulness is only natural and that it comes with age. Still the fear of Alzheimer's is haunting there. Someday if and when I become even more cloudy minded than I am now, unable to drive and unable to tell you where "home" is, my dear son, I expect I will ask y to take me home, I know you will do your best to find the place I need to be. I leave these notes for your guidance.
1.What's the main idea of the first two paragraphs?
A ou. The author’s mother suffered with serious Alzheimer's disease.
B. The author’s mother forgot who’s his son.
C. The author didn’t know how to cure his mother.
D. The author’s mother couldn’t find her home.
2.What is not the symptom of the author’s mother ?
A. cheerful B. confused
C. forgetful D. uneasy
3. What’s the meaning of the underlined word “pictured”?
A. photographed B. appeared
C. described D. painted
4. What can you infer from the third paragraph?
A. The author cares much about his mother.
B. The author’s mother was fond of pet lambs.
C. The author saw a little girl playing with a pet lamb.
D. The author’s mother didn’t like her usual home.
5.What’s the best title of the passage?
A. Take Mother Home.
B. Everyone will suffer with Alzheimer's disease.
C. A story about a son and a mother.
D. Where Is Home?
高二英语阅读理解中等难度题查看答案及解析
Many people believe that heart disease only affects older men.1..The reality is that people of all ages die of heart attacks each year. And while death rates have declined in the U.S. and many western European countries, they are on the rise in the developing world. Yet most heart disease is preventable.
The challenge of heart disease is that it may be silent for years before causing any noticeable problems. No one would have guessed that Barbara Teng would have a heart attack. She was not overweight. “In 2014, the week after I turned 49 when I was on a business trip in Chicago I had a major heart attack," she said. 2. . She now exercises daily and monitors her heart health.
Dr. Patrice Nickens who is with the National Heart Lung and Blood Institute thinks that heart disease is 82 percent preventable. “3. ,” she said .“Men are also facing the same problem and the key to staying healthy is knowing your numbers”. “Your weight ,your blood cholesterol blood sugar and your blood pressure are important numbers that can help you take action and reduce your risk ,” she said.4..“And the steps to take are simple: don’t smoke, maintain a healthy weight, exercise, know your numbers and talk to your physician and control these risks,” she said.
African-Americans are at higher-than-average risk for heart disease and stroke; people don't even know they have it, which increases the risk. Medstar Washington Hospital Center is trying to reach this population.5. .For example, they help the people monitor their blood pressure. If people realize they are at risk for heart disease ,they'll make lifestyle changes: lose weight ,exercise, eat the right foods and keep in touch with a doctor.
A. With the right training, they can play an important role in community health
B. A healthy lifestyle can prevent heart disease
C. Lack of exercise causes heart attacks
D. It is the leading cause of death for women
E. This is a set idea that is not true
F. And that changed her life
G. So we must cure heat disease
高二英语七选五中等难度题查看答案及解析
According to the Ministry of Health, 260 million Chinese people have chronic(慢性)diseases, and 85 percent of all deaths in China are caused by such diseases.Among them, cardiovascular(心血管的)disease has bothered more people than any other kind of chronic disease.
According to the WHO(World Health Organization), salt consumption(消耗), one of the key causes of high blood pressure that can lead to cardiovascular disease, is much higher in China than in other countries.
Douglas Bettcher, the director of the WHO’s Tobacco Free Initiative, says, “The average Chinese person consumes about 12 to 14 grams (of salt) per day, while the suggestion of the WHO is consumption of less than 5 grams per day.High salt consumption is a major cause of cardiovascular disease and high pressure in China.
Changing the way that food is prepared could reduce salt consumption in China.
Another major risk factor in China is smoking.Dr Michael O’Leary, a representative of the WHO, says, “We know already that one million deaths in China are related to smoking, This is an enormous number.It means that we are seeing nearly 3000 deaths a day in China, or two deaths every minute, related to smoking.
According to O’Leary, about 26 percent of men who die from smoking-related diseases in China die before the age of 60.People who can still contribute a great deal, in other words, are dying too young.
China has tried to ban smoking , but more efforts are needed.
More than half of chronic diseases are preventable by changing lifestyles and reducing risks.The four key risk factors are: smoking, diets high in fats, salt and sugar, environments that prevent physical activities, and alcohol consumption.These are the areas on which efforts to make changes need to concentrate.
1.Which of the following is more in China than in other countries?
A.The amount of salt consumed
B.The number of deaths caused by high blood pressure.
C.The number of people with cardiovascular disease.
D.The number of people with high blood pressure.
2.According to the WHO, how much salt should a Chinese person consume?
A.About 12 to 14 grams per day.
B.Less than 5 grams per day.
C.About 17 to 19 grams per day.
D.About 7 to 9 grams per day.
3.Why does O’Leary mention “26 percent of men” in Paragraph 6?
A.To show China needs to try to ban smoking.
B.To show smoking causes the deaths of elderly people.
C.To show smoking causes the deaths of too many young people.
D.To show the number of smoking-related deaths in China is large.
4.What can be inferred from the last paragraph?
A.There are four causes of chronic diseases.
B.The change in lifestyles can prevent some chronic diseases.
C.No smoking or alcohol means no chronic diseases.
D.If we do physical activities, we will have no chronic diseases.
高二英语阅读理解中等难度题查看答案及解析
By the end of 2007, about half a million people had flooded into the city, ____ up around 10 percent of its total population.
A. make B. made C. making D. to be made
高二英语单项填空简单题查看答案及解析
Mental health experts estimate that depression affects more than 120 million people worldwide. It severely affects the person’s quality of life and, in extreme cases, can lead to people killing themselves. Anti-depressant medicines have been shown as an effective treatment for most patients. But the drugs are unable to help a small number of people with the disorder.
For such person, doctors may suggest deep transcranial magnetic stimulation(经颅磁力刺激), or DTMS for short. In this treatment, patients wear a special helmet connected to a machine. An electric coil(线圈)in the helmet sends out regular waves of electromagnetic energy. These beating sounds produce changes in the brain area responsible for the disorder.
Electromagnetic stimulation(刺激) was first tried to treat depression over 30 years ago. Now, a new generation of wiring can direct the energy on one part of the brain. DTMS starts with daily 20-mimute-long treatments for 20 to 30 days. The patient then returns for treatment two to three times a week for several weeks.
The only side effect is sometimes slight head pain. Aaron Tendler is the chief medical officer of Brains way, the company that makes the machine. He said that it’s hard to say how long the effects of DTMS last.
DTMS is being used in Europe to treat both depression and other conditions. Patients there are getting treated for dementia, Alzheimer’s and Parkinson’s disease. And DTMS is even being used to help some Europeans give up smoking.
But in the United States, the Federal Food and Drug Administration(FFDA) has approved it only for the treatment of depression which cannot be treated by medicine. But clinical tests are continuing on other conditions, such as obsessive-compulsive disorder and post-traumatic stress disorder. Both of the disorders, like depression, can get in the way of a person working and getting along with people.
1.Why are people concerned about depression?
A.Because it may lead to death sometimes.
B.Because only a few people can recover from it.
C.Because it does not affect social communication.
D.Because medicine treatment usually fails to work on it.
2.How does DTMS help patients with depression?
A.By wearing a helmet in daily life.
B.By performing an operation on the head.
C.By making them face the disease bravely.
D.By letting electromagnetic waves stimulate the brain.
3.What can we infer about DTMS from the text?
A.It is quite safe to use it worldwide.
B.The use of it in America is forbidden.
C.It can cure patients of depression in a month.
D.It will be widely used in treating more diseases.
4.What would be the best title for the text?
A.Finding Hope in A Hopeless Depression
B.DTMS - A New Treatment for Depression
C.The Killer of Modern Humans Depression
D.Using Electromagnetic Waves to Cure Depression
高二英语阅读理解中等难度题查看答案及解析
Normal memory function involves many parts of the brain, and any disease or injury that affects the brain can interfere_________ the development of the brain.
A.for B.by C.in D.with
高二英语单项填空中等难度题查看答案及解析
Malaria, the world's most widespread parasitic(寄生虫引起的) disease, kills as many as three million people every year—almost all of whom are under five, very poor, and African.In most years, more than five hundred million cases of illness result from the disease, although exact numbers are difficult to assess because many people don't (or can't) seek care.It is not unusual for a family earning less than two hundred dollars a year to spend a quarter of its income on malaria treatment, and what they often get no longer works.In countries like Tanzania, Mozambique, and the Gambia, no family, village, hospital, or workplace can remain unaffected for long.
Malaria starts suddenly, with violent chills, which are soon followed by an intense fever and, often, headaches.As the parasites multiply, they take over the entire body.Malaria parasites live by eating the red blood cells they infect (感染).They can also attach themselves to blood vessels in the brain.If it doesn't kill you, malaria can happen again and again for years.The disease passed on to humans by female mosquitoes infected with one of four species of parasite.Together, the mosquito and the parasite are the most deadly couple in the history of the earth—and one of the most successful.Malaria has five thousand genes, and its ability to change rapidly to defend itself and resist new drugs has made it nearly impossible to control.Studies show that mosquitoes are passing on the virus more frequently, and there are more outbreaks in cities with large populations.Some of the disease's spread is due to global warming.
For decades, the first-choice treatment for malaria parasites in Africa has been chloroquine, a chemical which is very cheap and easy to make.Unfortunately, in most parts of the world, malaria parasites have become resistant to it.Successful alternatives that help prevent resistance are already available, but they have been in short supply and are very expensive.If these drugs should fail, nobody knows what would come next.
1.According to paragraph 1, many people don't seek care because___.
A.they are too poor
B.it is unusual to seek care
C.they can remain unaffected for long
D.there are too many people suffering from the disease
2.People suffering from malaria___.
A.have to kill female mosquitoes B.have ability to defend parasites
C.have their red blood cells infected D.have sudden fever, followed by chills
3.Which of the following may be the reason for the wide spread of the disease?
A.Its resistance to global warming.
B.Its ability to pass on the virus frequently.
C.Its outbreaks in cities with large populations.
D.Its ability to defend itself and resist new drugs.
4.It can be inferred from the passage that___.
A.no drugs have been found to treat the disease
B.the alternative treatment is not easily available to most people
C.malaria has developed its ability to resist parasites
D.nobody knows what will be the drug to treat the disease
5.Which of the following questions has NOT been discussed in the passage?
A.How can we know one is suffering from malaria?
B.How many people are killed by malaria each year?
C.Why are there so many people suffering from malaria?
D.What has been done to keep people unaffected for long?
高二英语阅读理解中等难度题查看答案及解析