In many places, ________ five percent of the middle school students have normal eyesight, which worries experts a lot．

1. A.
   more than
2. B.
   less than
3. C.
   fewer than
4. D.
   rather than

 A new survey finds that more than eighty percent of Internet users in the United States search for health information online. The survey found that searching online is one of the leading ways that people look for a second opinion though doctors are still the main source of health information.
Forty-four percent of people are actually looking for doctors or other providers when they search for health information online. Another finding of the survey: Two-thirds of Internet users look online for information about a specific disease or medical condition.
The Internet has also become an important source of emotional support for people with health problems. Susannah Fox says one in five Internet users has gone online to find other people who have the same condition. It was more popular among people with more serious health issues—one in four people living with chronic diseases (慢性病). And it was basically off the charts with people living with rare disease. They are so eager to find other people online who share their health concerns.
A disease is considered rare if it affects fewer than two hundred thousand people worldwide. The rise of social networking has made it easier for people with rare diseases to connect with each other and feel less alone. Social networking is also changing the way some doctors and patients communicate with each other. Dr. Jeff Livingston operates a medical center for women in Irving, Texas. His office uses password-protected software to share information with patients.
“We provide the patient full access to their medical care. Anything I can see, the patient can see. All of their notes, all of their doctor visits are right there. All of their lab work is right there.” Dr. Livingston says the software has increased efficiency, reduced costs and improved relations with patients.
【小題1】From the first paragraph, we can know _________.

 A new survey finds that more than eighty percent of Internet users in the United States search for health information online. The survey found that searching online is one of the leading ways that people look for a second opinion though doctors are still the main source of health information.

Forty-four percent of people are actually looking for doctors or other providers when they search for health information online. Another finding of the survey: Two-thirds of Internet users look online for information about a specific disease or medical condition.

The Internet has also become an important source of emotional support for people with health problems. Susannah Fox says one in five Internet users has gone online to find other people who have the same condition. It was more popular among people with more serious health issues—one in four people living with chronic diseases (慢性病). And it was basically off the charts with people living with rare disease. They are so eager to find other people online who share their health concerns.

A disease is considered rare if it affects fewer than two hundred thousand people worldwide. The rise of social networking has made it easier for people with rare diseases to connect with each other and feel less alone. Social networking is also changing the way some doctors and patients communicate with each other. Dr. Jeff Livingston operates a medical center for women in Irving, Texas. His office uses password-protected software to share information with patients.

“We provide the patient full access to their medical care. Anything I can see, the patient can see. All of their notes, all of their doctor visits are right there. All of their lab work is right there.” Dr. Livingston says the software has increased efficiency, reduced costs and improved relations with patients.

1.From the first paragraph, we can know _________.

2. The underlined words “off the charts” in Paragraph 3 mean _________.

3. By using social networking, patients with rare diseases can _________.

4. Which of the following is NOT true of Dr. Livingston’s software?

A new survey finds that more than eighty percent of Internet users in the United States search for health information online. The survey found that searching online is one of the leading ways that people look for a second opinion though doctors are still the main source of health information.
Forty-four percent of people are actually looking for doctors or other providers when they search for health information online. Another finding of the survey: Two-thirds of Internet users look online for information about a specific disease or medical condition.
The Internet has also become an important source of emotional support for people with health problems. Susannah Fox says one in five Internet users has gone online to find other people who have the same condition. It was more popular among people with more serious health issues—one in four people living with chronic diseases (慢性病). And it was basically off the charts with people living with rare disease. They are so eager to find other people online who share their health concerns.
A disease is considered rare if it affects fewer than two hundred thousand people worldwide. The rise of social networking has made it easier for people with rare diseases to connect with each other and feel less alone. Social networking is also changing the way some doctors and patients communicate with each other. Dr. Jeff Livingston operates a medical center for women in Irving, Texas. His office uses password-protected software to share information with patients.
“We provide the patient full access to their medical care. Anything I can see, the patient can see. All of their notes, all of their doctor visits are right there. All of their lab work is right there.” Dr. Livingston says the software has increased efficiency, reduced costs and improved relations with patients

1. 1.

   From the first paragraph, we can know _________

   1. A.
      most online health information is reliable
   2. B.
      more people now turn to the Internet for medical advice
   3. C.
      people shouldn’t rely on the Internet for medical advice
   4. D.
      doctors are no longer the patients’ first choice
2. 2.

   The underlined words “off the charts” in Paragraph 3 mean _________

   1. A.
      very popular
   2. B.
      not accessible
   3. C.
      far away from
   4. D.
      not attractive
3. 3.

   By using social networking, patients with rare diseases can _________

   1. A.
      find effective cures
   2. B.
      get emotional comfort
   3. C.
      ask for financial support
   4. D.
      consult doctors anytime
4. 4.

   Which of the following is NOT true of Dr. Livingston’s software?

   1. A.
      It cuts down medical expenses
   2. B.
      It decreases the time spent on medical care
   3. C.
      It takes doctors closer to their patients
   4. D.
      It gives patients a medical test online

    Unnoticed and unappreciated for five decades，a large female turtle （龜）with a stained（彩色的），leathery（粗而硬的） shell is now a precious commodity（物品）in Changsha’s old zoo．She is fed on a special diet of raw meat．Her small pool has been covered with glass which can defend it from bullets．A special camera monitors her movements．A guard is posted at night．

    The purpose is simple：the turtle must not die．

    Earlier this year，scientists concluded that she was the planet’s last known female Yangtze giant soft shell turtle．She is about 80 years old and weighs almost 90 pounds．

    As it happens，the planet also has only one known male．He lives at a zoo the city of Suzhou．He is 100 years old and weighs about 200 pounds．They are the last hope of saving a species believed to be the largest freshwater turtles in the world．

    “It’s a very dangerous situation,” said Peter Pritchard, a famous turtle expert in the United States，who has helped try to save the species．、

    For many Chinese people，the turtle is the symbol of health and long life，but the last two Yangtze giant soft-shell creatures show the threatened state of wildlife and biodiversity（生物多樣性）in China．Pollution, hunting and over development are destroying natural habitats，and also endangering the plant and the animal population．

    China contains some of the world’s richest treasures of biodiversity, yet the latest major survey of plants and animals shows a discouraging picture．Nearly 40 percent of all mammal species in China are now endangered, Scientists say．For plants，the situation is worse；70 percent of all nonflowering plant species and 86 percent of flowering species are considered threatened．

1.Why is the turtle in Changsha specially cared?

    A．She has been unnoticed and unappreiated five decades．

    B．She can be sold at a high price．

    C．She is the planet’s last known female Yangtze giant soft-shell turtle．

    D．She is old and heavy．

2.Which of the following statements is TRUE according to the text?

    A．The turtle in Changsha is precious because it is the symbol of health and long life．

    B．Peter Pritchard believes the female turtle is the largest freshwater turtle in the world．

    C．The female turtle is in a dangerous situation where she may be killed．

    D．The female turtle in Changsha and the male turtle in Suzhou are the last hope of saving the largest freshwater turtle species in the world．

3.According to the text ________in China．

    A．there are the richest species of living things

    B．wild plants and animals are becoming fewer

    C．turtles are specially protected

    D．the situation of plants is better than that of mammal species

4.The last paragraph proves the threatened state of wildlife and biodiversity in China by__________ ．

    A．facts and numbers                B．Peter Pritchard’S words

    C．teaching theory                  D．telling a story

Studies have shown that the fewer medicines a person has to take the more likely he or she will take them. Last week, a study was released about a new treatment that combines 5 medicines for heart disease in one pill. Salim Yusuf of McMaster University in Hamilton, Ontario, Canada was the lead investigator. He presented the findings at the American College of Cardiology Conference in Orlando, Florida.

The experimental drug is known as Polycap. It contains aspirin, a drug to lower cholesterol（膽固醇） and three medicines to lower blood pressure. The study was carried out at 50 health centers across India. More than two thousand people between the ages of forty-five and eighty took part in the study. All had at least one risk factor for heart disease. These include high blood pressure, high cholesterol, diabetes or being severely overweight.

The people were divided into 9 groups of about 200 people each. One group took Polycap. The other groups took either a single drug or different combinations of the medicines in the Polycap pill. The study showed that Polycap lowered blood pressure and cholesterol without many side effects. Doctor Yusuf said the single pill, taken once a day, could reduce the average person's risk of heart disease and stroke by about half. The maker of Polycap, Cadila Pharmaceuticals of India, paid for the study.

Cardiovascular diseases(心血管疾病) of the heart and blood vessels are the number one cause of death around the world. These diseases kill more than seventeen million people every year. 80 percent of them are in low and middle income countries. Doctor Yusuf said the single pill treatment could revolutionize heart disease prevention. People would be more likely to take one pill a day than many pills. And one pill would cost less than several pills.

Other heart doctors say heart disease prevention is important but not necessarily with pills. They say patients might be able to get the same results with changes in diet and exercise.

Doctors say that more research on Polycap is needed. They say the drug should be tested on thousands more people, including those in different risk, age and ethnic groups.  

61.The underlined sentence in Paragraph1 implies that people       .

A. don’t like to take medicine                   

B. tend to take fewer medicines

C. should take medicines if it is necessary 

D. tend to fall sick if they take fewer medicines

62.Which of the following about Doctor Yusuf’s experiment on Polycap in India is true?

A. Polycap was tested for its five different combinations

B. Polycap was proved basically safe and effective.

C. All the participants had at least one symptom of heart disease

D. Participators were required to come from different ages and ethnic groups

63.From the passage, we can infer that Polycap        .

A. is generally accepted by heart doctors

B. mainly consists of medicines to lower blood pressure.

C. is to play important role in heart disease prevention.

D. will be cheaper than other common medicines to treat heart disease.

64.According to the passage, the following people are more likely to get Cardiovascular disease         .

A. old people               B. low-income people          C. overweight people           D. diabetic people

65.What would be the best title for the passage?

A. Different Opinions about Heart Disease Prevention

B. A Combination Pill May Cut Heart Disease Risk in Half

C. A Combination Pill Cures Blood Pressure and Bad Cholesterol

D. Cardiovascular Diseases Are the Number One Killer in the World

Americans are more socially isolated than they were 20 years ago, and nearly a quarter of people said they had “zero”close friends with whom to discuss personal matters. More than 50 percent named two or fewer confidants (密友), most often immediate family members, the researchers said.

　 “This is a big social change, and it shows something that’s not good for our society，” said Duke University Professor Lynn Smith. She said that it showed there was a surprising drop in the number of close friends people had since 1985. At that time, Americans most commonly said they had three close friends whom they had known for a long time, saw often, and with whom they shared a number of interests. They were almost likely to name four or five friends and the relationships often sprang from their neighborhoods or communities (社區(qū)).

　 Ties to a close network of friends create a social safety net that is good for society, and for the individual. People were not asked why they had fewer intimate (親密的) ties, but Smith said that part of the causes could be that Americans are working more, marrying later, having fewer children, and commuting (往返上班) longer distances. “It’s one thing to know someone and exchange e-mails with him. It’s another thing to say, ‘Will you give me a ride out of town with all of my possessions and pets?’ and ‘Can I stay with you for a couple or three months?’” Smith said. “Worrying about social isolation is not a matter of nostalgia (懷舊之情) for a warm and comfortable past. Real things are strongly connected with that，” added Harvard University Professor Robert Putnam, author of Bowling Alone, a book on the decline of American communities. He suggested flexible work schedules would allow Americans to tend both personal and professional lives.

1. What’s the passage mainly talking about?

　　 A. American social isolation.

　　 B. Americans have “zero” close friends.

　　 C. Ties to a close network of friends are good for society.

　　 D. Flexible work schedules change Americans’ lifestyle.

2. From the second paragraph we can learn that people tend to ____.

　　 A. be closer than before

　　 B. be less close than before

　　 C. have more friends than before

　　 D. have more family members than before

3. Which of the following is the possible cause of American social isolation?

　　 A. They work more.

　　 B. They don’t marry.

　　 C. They have more children.

　　 D. They spend too much time on relaxation.

4. According to Professor Robert, ____.

　　 A. there could be four possible causes for American social isolation

　　 B. worrying about social isolation is not a matter of nostalgia

　　 C. flexible work schedules don’t affect (影響) Americans’ way of life

　　 D. American social isolation is only a small social　　　　 problem

American farmers first planted genetically engineered(GE) crops in 1996.Today eighty percent of the cropland for soybeans, corn and cotton in the United States is transgenic(轉基因的).Genetic engineering adds or changes genes in a plant to produce desired qualities.

The United States is one of the twenty-five countries where farmers planted genetically engineered crops in 2009.An agricultural biotechnology group says GE crops planting decreased in Europe. But the amount of cropland planted with GE crops rose by about seven percent worldwide.

The National Research Council, part of the National Academies in Washington, recently published a study. The study examined how genetically engineered crops have affected farming in the United States. It found that many farmers have better harvests, better weed control and fewer losses from insect damage compared to traditional crops.

LaReesa Wolfenbarger is a University of Nebraska biology professor and a member of the committee that wrote the report. She says they found that genetically engineered crops can be better for the environment.

LaReesa Wolfenbarger:“In general, we find that genetically engineered crops have had fewer harmful effects on the environment than non-GE crops produced conventionally.”

For example, she noted that crops designed to resist damage by glyphosate(草甘膦) need fewer pesticides(殺蟲劑).Glyphosate is a chemical used in weed killing products.

But some farmers have used so much glyphosate that a number of kinds of weeds can now resist it. David Ervin of Portland State University in Oregon led the committee that wrote the report. Professor Ervin says this means that some farmers are again using more poisonous herbicides(除草劑) to control weeds. He says the problem needs immediate attention.

Earlier this year, a professor at the University of Western Australia commented on the overuse of glyphosate. Stephen Powles wrote about it in the Proceedings of the National Academy of Sciences in the United States. He said glyphosate is as important in worldwide food production as penicillin（青霉素）is in medicine for fighting disease. He called for better use of glyphosate-resistant crop technology.

64.Which of the following is TRUE according to the passage?

A. The amount of cropland planted with GE crops increased by seven percent in the US.

B. The amount of cropland planted with GE crops decreased in Europe.

C. American farmers first planted GE crops two decades ago.

D. Eighty percent of the crops in the US are transgenic.

65.In comparison with traditional crops, GE crops________.

A. need better soil                 B. need more glyphosate

C. can resist insect attacks better   D. are more likely to be bothered by weeds

66.According to David Ervin,____________________.

A. to control weeds is quite easy

B. glyphosate is of little use to planting

C. glyphosate is as important as penicillin 

D. people should attach great importance to the overuse of herbicides

67.The author writes this passage to____________.

A. advise people to stop using pesticides

B. prove that GE crops have better harvests

C. call on more countries to plant GE crops

D. discuss the issues surrounding GE crops

　 Americans are more socially isolated than they were 20 years ago, and nearly a quarter of people said they had “zero”close friends with whom to discuss personal matters. More than 50 percent named two or fewer confidants (密友), most often immediate family members, the researchers said.

　 “This is a big social change, and it shows something that’s not good for our society，” said Duke University Professor Lynn Smith. She said that it showed there was a surprising drop in the number of close friends people had since 1985. At that time, Americans most commonly said they had three close friends whom they had known for a long time, saw often, and with whom they shared a number of interests. They were almost likely to name four or five friends and the relationships often sprang from their neighborhoods or communities (社區(qū)).

　 Ties to a close network of friends create a social safety net that is good for society, and for the individual. People were not asked why they had fewer intimate (親密的) ties, but Smith said that part of the causes could be that Americans are working more, marrying later, having fewer children, and commuting (往返上班) longer distances. “It’s one thing to know someone and exchange e-mails with him. It’s another thing to say, ‘Will you give me a ride out of town with all of my possessions and pets?’ and ‘Can I stay with you for a couple or three months?’” Smith said. “Worrying about social isolation is not a matter of nostalgia (懷舊之情) for a warm and comfortable past. Real things are strongly connected with that，” added Harvard University Professor Robert Putnam, author of Bowling Alone, a book on the decline of American communities. He suggested flexible work schedules would allow Americans to tend both personal and professional lives.

1. What’s the passage mainly talking about?

　　 A. American social isolation.

　　 B. Americans have “zero” close friends.

　　 C. Ties to a close network of friends are good for society.

　　 D. Flexible work schedules change Americans’ lifestyle.

2. From the second paragraph we can learn that people tend to ____.

　　 A. be closer than before

　　 B. be less close than before

　　 C. have more friends than before

　　 D. have more family members than before

3. Which of the following is the possible cause of American social isolation?

　　 A. They work more.

　　 B. They don’t marry.

　　 C. They have more children.

　　 D. They spend too much time on relaxation.

4. According to Professor Robert, ____.

　 A. there could be four possible causes for American social isolation

　　 B. worrying about social isolation is not a matter of nostalgia

　　 C. flexible work schedules don’t affect (影響) Americans’ way of life

　　 D. American social isolation is only a small social problem

Elderly adults who regularly drink green tea may stay more active and independent than their peers over time，according to a Japanese study that covered thousands of people．
Green tea contains antioxidant chemicals that may help ward off the cell damage that can lead to disease．Researchers have been studying green tea's effect on everything from cholesterol(膽固醇)to the risk of certain cancers，with mixed results so far．
For the new Japanese study，researchers decided to examine the question of whether green tea drinkers have a lower risk of frailty and disability as they grow older．
Tomata and his colleagues followed nearly 14，000 adults aged 65 or older for three years．
They found those who drank the most green tea were the least likely to develop “functional disability”，or problems with daily activities or basic needs，such as dressing or bathing．
Specifically，almost 13 percent of adults who drank less than a cup of green tea per day became functionally disabled，compared with just over 7 percent of people who drank at least five cups fl day．
The study did not prove that green tea alone kept people active as they grew older．
Green-tea lovers generally had healthier diets，including more fish，vegetables and fruit，as well as more education．lower smoking rates，fewer heart attacks and strokes，and greater mental sharpness．
They also tended to be more socially active and have more friends and family to rely on．
Although it's not clear how green tea might offer a buffer(緩沖劑)against disability，Tomata's team did note that one recent study found green tea extracts(提煉物)seem to increase leg muscle strength in older women．
While green tea and its extracts are considered safe in small amounts，they do contain caffeine and small amounts of vitamin K，which means it could block drugs that prevent blood thickened．
【小題1】Which of the following can summarize the passage best?

Elderly adults who regularly drink green tea may stay more active and independent than their peers over time，according to a Japanese study that covered thousands of people.
Green tea contains antioxidant chemicals that may help ward off the cell damage that can lead to disease.Researchers have been studying green tea's effect on everything from cholesterol(膽固醇)to the risk of certain cancers，with mixed results so far.
For the new Japanese study，researchers decided to examine the question of whether green tea drinkers have a lower risk of frailty and disability as they grow older.
Tomata and his colleagues followed nearly 14，000 adults aged 65 or older for three years.
They found those who drank the most green tea were the least likely to develop “functional disability”，or problems with daily activities or basic needs，such as dressing or bathing.
Specifically，almost 13 percent of adults who drank less than a cup of green tea per day became functionally disabled，compared with just over 7 percent of people who drank at least five cups fl day.
The study did not prove that green tea alone kept people active as they grew older.
Green-tea lovers generally had healthier diets，including more fish，vegetables and fruit，as well as more education.lower smoking rates，fewer heart attacks and strokes，and greater mental sharpness.
They also tended to be more socially active and have more friends and family to rely on.
Although it's not clear how green tea might offer a buffer(緩沖劑)against disability，Tomata's team did note that one recent study found green tea extracts(提煉物)seem to increase leg muscle strength in older women.
While green tea and its extracts are considered safe in small amounts，they do contain caffeine and small amounts of vitamin K，which means it could block drugs that prevent blood thickened.

1. 1.

   Which of the following can summarize the passage best?

   1. A.
      Green tea makes you less active.
   2. B.
      Green tea makes you less disabled.
   3. C.
      Green tea makes you more friendly.
   4. D.
      Green tea makes you more educated.
2. 2.

   The underlined word“ward off”in Paragraph 2 probably means     .

   1. A.
      form
   2. B.
      absorb
   3. C.
      remove
   4. D.
      prevent
3. 3.

   Tomata and his colleagues wanted to     .

   1. A.
      prove whether the Japanese study is correct
   2. B.
      know if green tea drinkers are independent
   3. C.
      help nearly 14，000 adults aged 65 or older
   4. D.
      study green tea's effect on cholesterol
4. 4.

   Which of the following is NOT the advantage of green tea?

   1. A.
      Reduce functional disability.
   2. B.
      Keep old people active.
   3. C.
      Make more friends.
   4. D.
      Suffer fewer heart attacks.
5. 5.

   It can be inferred from the last paragraph     .

   1. A.
      green tea is safe to drink
   2. B.
      green tea should be drunk properly
   3. C.
      green tea is poisonous for old people
   4. D.
      vitamin K is helpful to us

Elderly adults who regularly drink green tea may stay more agile (敏捷的)and independent than their peers over time,according to a Japanese study that covered thousands of people.

Green tea contains antioxidant chemicals(抗氧化物)that may help stop the cell damage that can lead to disease. Researchers have been studying green tea's effect on everything from cholesterol (膽固醇)to the risk of certain cancers，with mixed results so far.

They found those who drank the most green tea were the least likely to develop "functional disability"，or problems with daily activities or basic needs, such as dressing or bathing.

Specifically,almost 13 percent of adults who drank less than a cup of green tea per day became functionally disabled, compared with just over 7 percent of people who drank at least five cups a day.

The study did not prove that green tea alone kept people agile as they grew older. Green tea lovers generally had healthier diets, including more fish,vegetables and fruit, as well as more education, lower smoking rates，fewer heart attacks and strokes，and greater mental sharpness. They also tended to be more socially active and have more friends and family to rely on. But even with those factors accounted for,green tea itself was tied to a lower disability risk,the researchers said.

People who drank at least five cups a day were one-third less likely to develop disabilities than those who had less than a cup per day. Those people who averaged three or four cups a day had a 25 percent lower risk.

Although it's not clear how green tea might offer a buffer(緩沖)against disability,Tomata's team did note that one recent study found green tea extracts (提取物)seem to increase leg muscle strength in older women.

While green tea and its extracts are considered safe in small amounts, they do contain caffeine and small amounts of vitamin K，which means it could affect drugs that prevent blood clotting(凝固).

(   ) 8. What does the underlined word "peer" mean in the first paragraph?
A. Father. B. Brother.

C. A person of the same age. D. A person living in the same neighborhood.

(   ) 9. What can be learned from the passage?

A.   Antioxidant chemicals can lead to disease.

B.   Those who often drink green tea can't develop "functional disability'.

C.   "Functional disability" is related to problems with daily activities or basic needs.

D.   People who drink at least five cups of green tea a day are not likely to become functionally disabled.

(   ) 10. What does the fifth paragraph mainly tell us?

A.   How the study was proved.

B.   Why green tea lovers can keep agile.

C.   What healthier diets include.

D.   How to lower disability risk.

(   ) 11. What have the researchers discovered?

A.   Those who drank green tea can't develop "functional disability".

B.   Green tea alone kept people agile as they grew older.

C.   How green tea might offer a buffer against disability.

D.   Green tea extracts seem to increase leg muscle strength in older women.
(   ) 12. From the passage we can infer that        .

A.   vitamin K is contained in caffeine

B.   vitamin K is good for our blood

C.   vitamin K is bad for our health

D.   vitamin K has influence on some drugs

Elderly adults who regularly drink green tea may stay more agile (敏捷的) and independent than their peers over time, according to a Japanese study that covered thousands of people.
Green tea contains antioxidant chemicals (抗氧化物) that may help stop the cell damage that can lead to disease. Researchers have been studying green tea’s effect on everything from cholesterol (膽固醇) to the risk of certain cancers, with mixed results so far.
They found those who drank the most green tea were the least likely to develop “functional disability”, or problems with daily activities or basic needs, such as dressing or bathing.
Specifically, almost 13 percent of adults who drank less than a cup of green tea per day became functionally disabled, compared with just over 7 percent of people who drank at least five cups a day.
The study did not prove that green tea alone kept people agile as they grew older. Green-tea lovers generally had healthier diets, including more fish, vegetables and fruit, as well as more education, lower smoking rates, fewer heart attacks and strokes, and greater mental sharpness. They also tended to be more socially active and have more friends and family to rely on. But even with those factors accounted for, green tea itself was tied to a lower disability risk, the researchers said.
People who drank at least five cups a day were one-third less likely to develop disabilities than those who had less than a cup per day. Those people who averaged three or four cups a day had a 25 percent lower risk.
Although it’s not clear how green tea might offer a buffer (緩沖) against disability, Tomata’s team did note that one recent study found green tea extracts (提取物) seem to increase leg muscle strength in older women.
While green tea and its extracts are considered safe in small amounts, they do contain caffeine and small amounts of vitamin K, which means it could affect drugs that prevent blood clotting (凝固).
【小題1】What can be learned from the passage?

Elderly adults who regularly drink green tea may stay more agile (敏捷的) and independent than their peers over time, according to a Japanese study that covered thousands of people.

Green tea contains antioxidant chemicals (抗氧化物) that may help stop the cell damage that can lead to disease. Researchers have been studying green tea’s effect on everything from cholesterol (膽固醇) to the risk of certain cancers, with mixed results so far.

They found those who drank the most green tea were the least likely to develop “functional disability”, or problems with daily activities or basic needs, such as dressing or bathing.

Specifically, almost 13 percent of adults who drank less than a cup of green tea per day became functionally disabled, compared with just over 7 percent of people who drank at least five cups a day.

The study did not prove that green tea alone kept people agile as they grew older. Green-tea lovers generally had healthier diets, including more fish, vegetables and fruit, as well as more education, lower smoking rates, fewer heart attacks and strokes, and greater mental sharpness. They also tended to be more socially active and have more friends and family to rely on. But even with those factors accounted for, green tea itself was tied to a lower disability risk, the researchers said.

People who drank at least five cups a day were one-third less likely to develop disabilities than those who had less than a cup per day. Those people who averaged three or four cups a day had a 25 percent lower risk.

Although it’s not clear how green tea might offer a buffer (緩沖) against disability, Tomata’s team did note that one recent study found green tea extracts (提取物) seem to increase leg muscle strength in older women.

While green tea and its extracts are considered safe in small amounts, they do contain caffeine and small amounts of vitamin K, which means it could affect drugs that prevent blood clotting (凝固).

1.What can be learned from the passage?

A．Antioxidant chemicals can lead to disease.

B．Those who often drank green tea can’t develop “functional disability”.

C．“Functional disability” is related to problems with daily activities or basic needs.

D．People who drank at least five cups a day are not likely to become functionally disabled.

2.What does the fifth paragraph mainly tell us?

A．How the study was proved.                B．Why green tea-lovers can keep agile.

C．What healthier diets include.              D．How to lower disability risk.

3.What have the Researchers discovered?

A．Those who drank green tea can't develop “functional disability”.

B．Green tea alone kept people agile as they grew older.

C．How green tea might offer a buffer against disability.

D．Green tea extracts (提取物) seem to increase leg muscle strength in older women.