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
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
Drugs that dissolve blood lumps can help people __________heart attacks.
A.survive B.recover C.oppose D.limit
高二英语单项填空中等难度题查看答案及解析
A cheap drug that can stop bleeding in people recently injured in an accident could potentially save the lives of tens of thousands worldwide, a new study says.
Researchers studied the effects of tranexamic acid (凝血酸), or TXA, in more than 10,000 injured people in 40 countries who received the drug within 8 hours of being injured. The study was published in the medical journal Lancet. Doctors found that patients who got TXA had a 15percent lower chance of dying from hemorrhage than those who didn’t get it . They also had a 10 percent lower chance of dying from any other cause, including organ failure and a head injury. The study was paid for by the British government.
The drug is commonly used in wealthy countries during elective surgeries(外科手术) to stop bleeding , but isn’t used for accident victims. TXA is off-patent and made by many companies. It costs about $4.5 per gram, and a typical dose is two grams. It is usually given via an injection(注射) and would be relatively easy to introduce, even in poor countries, experts said.
Previous tests of the drug regarded its use in elective surgeries, such as heart operations, but this was the first study to test the drug on accident victims. Doctors were worried it might increase side effects such as blood clots (凝块)in the heart and lungs, strokes, or heart attacks. There was no evidence of that in the Lancet study, though the authors said it was possible they might have missed some of these incidents.
For people between 5 and 45, accidents are the second leading cause of death worldwide after AIDS, and about 600,000 injured patients bleed to death every year. Experts estimated that if TXA were readily available, between 70,000 and 100,000 lives a year could be saved. Though the drug wasn’t tested on children , experts said it would almost certainly work with them as well.
1.The underlined word” hemorrhage” in Paragraph 2 probably means ________
A.serious illness | B.heart disease | C.heavy bleeding | D.lack of drug |
2.What can we learn about TXA from the passage?
A.It can only be made in England | B.It was only used in operations before |
C.It is a patented drug | D.It is mainly used in poor countries |
3.Doctors were worried about using TXA because ________
A.a lot of patients died unexpectedly after using it |
B.it has no treatment effect on patients |
C.it can cause blood clots or stroke |
D.they hadn’t used it on accident victims before |
4. What do we know from the last paragraph?
A.It is a pity that TXA wasn’t widely used on injured patients before |
B.Tests have proved that TXA can be used on children |
C.People between 5 and 45 should be injected with TXA every year |
D.Accidents are the first leading cause of death worldwide. |
高二英语阅读理解简单题查看答案及解析
I __________the poor rabbit, but I didn’t have the right drugs with me at that moment.
A.could save B.had saved C.could have saved D.saved
高二英语单项填空简单题查看答案及解析
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
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
The discovery of the new drug is of great _______ for people suffering from heart problems.
A.similarity B.sympathy C.subscribe D.significance
高二英语单项填空简单题查看答案及解析
Job stress has been known to cause heart problems in people who already have cardiovascular(心血管) disease. Now Finnish scientists have shown that50 in healthy people the pressure of work can cause damage.
High blood pressure, lack of51, smoking and being overweight52to heart disease—a 53killer in many industrialized countries.
But Mika Kivimaki, of the Finnish Institute of Occupational Health, and his colleagues, who studied the54histories of 812 healthy Finnish men and women in a metal industry company over 25 years, said job stress also plays an important role.
Workers who had the highest job-related stress levels at the start of the study were more than twice as55to die of heart disease,56the study published in The British Medical Journal.
Work stress57too much work as well as a lack of satisfaction and feeling undervalued and58.
Many people work long hours but if the effort is59the stress is minimized. Kivimaki said job pressure is damaging when being overworked is60with little or no control, unfair supervision and few career opportunities.
The British Heart Foundation said the results61earlier research showing that people in jobs with low control, such as manual workers, could be at greater62of heart disease than other employees.
“It is 63for people to try to minimize levels of stress at work and for employers to64people to have more control at work and to be rewarded for their success,” the foundation said in a statement.
1. |
| ||||
2. |
| ||||
3. |
| ||||
4. |
| ||||
5. |
| ||||
6. |
| ||||
7. |
| ||||
8. |
| ||||
9. |
| ||||
10. |
| ||||
11. |
| ||||
12. |
| ||||
13. |
| ||||
14. |
| ||||
15. |
|
高二英语完型填空简单题查看答案及解析
Eating too much fatty food,exercising too little and smoking can raise your future risk of heart disease. But there is another factor that can cause your heart problems more immediately:the air you breathe.
Previous studies have linked high exposure(暴露)to environmental pollution to an increased risk of heart problems, but two analyses now show that poor air quality can cause heart attack or stroke(中风) within as little as a few hours after exposure. In one report of the research, scientists found that people exposed to high levels of pollutants(污染物)were up to 5% more likely to suffer a heart attack within days of exposure than those with lower exposure. Another study of stroke patients showed that even air that the U.S. Environmental Protection Agency(EPA)considers to be of “moderate”(良好) quality and relatively safe for our health can raise the risk of stroke as much as 34% within 12 to 14 hours of exposure.
The authors of both studies stress that these risks are relatively small for healthy people and certainly modest compared with other risk factors such as smoking and high blood pressure. However, it is important to be aware of these dangers because everyone is exposed to air pollution regardless of lifestyle choices. So stricter regulation by the EPA of pollutants may not only improve environmental air quality but could also become necessary to protect public health.
1.The text mainly discusses the relationship between _________ .
A. heart problems and air quality
B. heart problems and exercising
C. heart problems and smoking
D. heart problems and fatty food
2.The underlined word “modest” in Paragraph 3 most probably means _________ .
A. relatively high B. extremely low
C. relatively low D. extremely high
3.We can learn from the text that __________?
A. eating fatty food has immediate effects on your heart.
B. the EPA conducted many studies on air quality.
C. moderate air quality is more harmful than smoking.
D. stricter regulations on pollutants should be made.
4.The author’s purpose of writing the text is most likely to _________ .
A. inform B. persuade C. describe D. entertain
高二英语阅读理解中等难度题查看答案及解析