閱讀理解。
     Drinking a lot of water does not do any good to the body, according to two experts in the United States.
In fact, they warn, drinking too much water could be, in certain cases, harmful.
     In a study, Dr Stanly Goldfarb and Dr Dan Negoianu, both of the Renal, Electrolyte and Hypertension
Division at the University of Pensylvania, the United States, have denied the popular belief that drinking a lot
of water clears body toxins (毒素) better, improves skin, and helps reduce weight.
     Dr Goldfarb and Dr Negoianu say that they found little proof to back the public opinion that drinking 8
glasses of water every day benefits health. At the same time, they fond little proof of harm in drinking 8
glasses of water every day.
     It is widely believed that in some cases, such as athletes, people who live in hot, dry environments, and
those with certain medical conditions-drinking a lot of water indeed helps, but no studies have been done to
prove the benefits of this practice in average, healthy people, the website medheadlines.com reports.
     The study at the University of Pennsylvania also examined reports that some people experienced increased
headaches when their consumption (消耗) of water was low. In one small study, which the doctors reviewed,
the group drinking the most water reported fewer headaches than the control group,"but the difference in the
number of headaches was so small between the two groups as to be considered unimportant."
     The researchers concluded that there is no scientific proof to support that average, healthy people need to
drink at least 8 glasses of water each day. The website medheadlines.com says that, according to an Indian
doctor, drinking too much water is harmful. If water enters the body more quickly than it can be removed,
problems can occur.
1. What's the key message delivered in the passage?
A. Drinking too much water might bring harm.
B. Whether to drink enough water makes no difference.
C. Drinking too much water may cause headaches.
D. Average, healthy people should drink more water.
2. Who may agree that drinking lots of water helps to lose weight?
A. The two experts.
B. The Indian doctor.
C. The general public.
D. The website.
3. According to the passage, we know that _____.
A. the website medheadlines.com is developed by an Indian doctor
B. the study was carried out by two experts with an Indian doctor
C. the two experts performed the study at the University of Pennsylvania
D. drinking 8 glasses of water every day can cure certain diseases
練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：遼寧省期末題 題型：閱讀理解

閱讀理解。
     Dr. Sylvia Earle wants you to stop eating fish. It's not because fish are endangered,though wild
fish stocks in many oceans are very low. It's not because they're bad for you, though fishin many
areas are exposed to poisonous substances in the water. It's because they're smart.
     "Fish are sensitive, they have personalities',says the marine biologist. For Earle, eating afish would
be like eating a dog or a cat. "I would never eat anyone I know personally."
     There's a lot more to fish than meets the eye: they talk to each other, they like to betouched, and
they engage in behavior that can seem very human. They can remember thingsand learn from experience.
Earle and a growing number of animal rights activists see these asstrong arguments against eating fish
altogether.
     The activists also point out that fish feel pain and fish suffer horribly on their way from the sea to
the supermarket. "While it may seem obvious that fish are able to feel pain, likeevery other animal,
some people think of fish as swimming vegetables," says Dr. Lynne Sneddon. "Really,it's kind of a
moral question. Is the enjoyment you get from fishing (oreating fish) more important than the pain of
the fish?"
      Fishermen and (fried) fish lovers are doubtful. "I've never seen a smart fish," says Marie Swaringen
as she finishes off a plate of fish at a Seattle seafood restaurant. "If they were verysmart, they wouldn't
get caught. "
     "For years, everyone's been telling us to eat fish because it's so good for us," says another diner.
''Now I've got to feel guilty while I'm eating my fish? What are they going to think of next? Don't eat
salad because cucumbers have feelings?"
1. Dr. Sylvia Earle discourage people from eating fish because.
A. there are not that many wild fish in the ocean
B. fish actually are sensitive and have personalities
C. some ocean fish contain poisonous substances
D. fish are like dogs or cats that people know personally
2. We can infer from the passage that      .
A. all people don't agree with the idea to stop eating fish
B. people will be persuaded not to eat fish in the future
C. stopping eating fish will lead to people's not eating vegetables
D. we shouldn't care too much about the feeling of fish
3. By saying "There's a lot more to fish than meets the eye, " the writer means.
A. there are far more fish than other animals in the world
B. there are more fish in the world than people can see
C. people can see more fish if they pay more attention
D. fish are not that simple as they appear to people's eyes
4. What is the writer's attitude towards people eating fish?
A. Neutral.
B. Indifferent.
C. Approving.
D. Opposed.

查看答案和解析>>

科目：高中英語 來源：河北省期中題 題型：閱讀理解

閱讀理解。
     Dr. Glenn Tisman, a cancer specialist, knew his young neighbor, Ray Bateman, had an unusual mind.
But he had no idea at the time that 12-year-old Ray had the ability to become his partner in cancer
research.
     Ray' s parents remembered that at age four, Ray surprised them by fixing a broken vacuum cleaner (吸
塵器). When he was ten, he speedily constructed the family color television from a kit.Later, he
succeeded in assembling (組裝) a complex stereo system after two experts had failed to do the job.
     When Ray was ten, he convinced his parents to buy him a computer.In a short time, Ray was able to
do amazing things with the computer.Ray shared his enthusiasm for computers with Dr. Tisman, who
used a computer for his research. The two discussed computers and medicine frequently.Amazingly, Ray
understood the biology and chemistry related to Dr. Tisman's medical research without any previous
instruction.
     Ray then worked with Dr. Tisman after school.He helped conduct research with the equipment and
kept it in working order.The purpose of the research was to test the effectiveness of mixing an old cancer
drug with certain vitamins.Ray analyzed patient test results by computer, while Dr. Tisman handled all
patient contact.Together, they came up with solid research that helped advance cancer treatment.
     In 1988, 14-year-old Ray went with Dr. Tisman to a meeting of the American Federation for Clinical
Research (AFCR) , where Ray presented their initial research findings.Using terminology (術(shù)語) beyond
the grasp of most kids of his age, Ray told the scientists how the new drug mixture caused fewer and
milder side effects for cancer patients.
     A year later, Ray returned to the meeting to update the findings of his and Dr. Tisman' s research. By
then, he had become well-known for his devotion to finding cures for sick patients.Stories about him
appeared in hundreds of newspapers around the world.He appeared on television newscasts and talk
shows.
     Ray continued to spend most free hours working with Dr. Tisman.The two began studying the effects
of vitamins on babies inside the womb.However, Ray' s main interest remained cancer treatment, and he
continues his research today.
1. According to the passage, Ray______.
A. is a boy of many gifts
B. is very helpful to his parents
C. learned fast under Dr. Tisman' s instruction
D. stopped working with Dr. Tisman after his success
2. What do we know about Dr. Tisman?
A. He succeeded in finding cures for cancer.
B. He made a new discovery in cancer treatment.
C. He convinced Ray to become a partner of him.
D. He taught Ray knowledge related to his research.
3. What made Ray first known to the medical world?
A. His presentation at AFCR.
B. His great skills in computer.
C. His devotion to cancer research.
D. His appearance on television newscasts.
4. Dr. Tisman's research is aimed at ______.
A. providing different cancer treatments
B. proving the effects of vitamins on babies
C. finding the side effects of a cancer drug
D. testing the effectiveness of a new drug mixture

查看答案和解析>>

科目：高中英語 來源：河南省同步題 題型：閱讀理解

閱讀理解。
     "Dr. Papaderos, what is the meaning of life?"
     The usual laughter followed, and people stirred to go. Papaderos held up his hand and stilled the
room and looked at me for a long time, asking with his eyes if I was serious and seeing from my eyes
that I was.
     "I will answer your question."
     Taking his wallet out of his hip pocket, he fished into a leather billfold and brought out a very small
round mirror, about the size of a quarter. And what he said went like this:
     "When I was a small child, during the war, we were very poor and we lived in a remote village. One
day, on the road, I found the broken pieces of a mirror. A German motorcycle had been wrecked in that
place.
     I tried to find all the pieces and put them together, but it was not possible, so I kept only the largest
piece. This one, and, by scratching it on a stone, I made it round. I began to play with it as a toy and
became fascinated by the fact that I could reflect light into dark places where the sun would never
shine-in deep holes and crevices (裂縫) and dark closets. It became a game for me to get light into the
most inaccessible places I could find.
     I kept the little mirror, and, as I went about my growing up, I would take it out in idle moments and
continue the challenge of the game. As I became a man, I grew to understand that this was not just a
child's game but a metaphor for what I might do with my life. I came to understand that I am not the
light or the source of light. But light-truth, understanding, knowledge-is there, and it will shine in many
dark places only if I reflect it.
     I am a fragment (碎片) of a mirror whose whole design and shape I do not know. Nevertheless,
with what I have I can reflect light into the dark places of this world-into the black places in the hearts
of men-and change some things in some people. Perhaps others may see and do likewise. This is what
I am about. This is the meaning of my life."
1. On hearing the author's question, Dr. Papaderos _____ at first.
A. laughed at his foolishness     
B. wasn't sure of the answer
C. doubted his seriousness        
D. wasn't interested at all
2. Why did Dr. Papaderos like the small round mirror so much as a child?
A. Because he was too poor to afford other toys. 
B. Because it could shine the places where the sun couldn't reach. 
C. Because he believed it would bring good luck to him. 
D. Because it told him a lot about what life really meant to him.
3.  The underlined "metaphor" in the 7th paragraph most probably means _____.  
A. symbol      
B. source         
C. light    
D. purpose
4. Which of the following might be the best title for the passage?
A. A Special Game in the Childhood    
B. A Broken Piece of Mirror
C. Dr. Papaderos' Experience    
D. The Meaning of Life

查看答案和解析>>

科目：高中英語 來源：江西省模擬題 題型：閱讀理解

閱讀理解。
     Dr. Jack M. Gwaltney, Jr. a professor at the University of Virginia School of Medicine, infected
six student volunteers with virus, the most common cause of colds. A few days later, when they were
coughing and sneezing, he gathered 37 more people and divided them into three groups. Group 1
members spent three days and nights in the same room with one of the infected students, separated
by a screen so they couldn't touch one another. Group 2 sat around a table while an infected volunteer
talked, coughed and sang to them. Group 3 held hands with an infected student for ten seconds, and
then touched their own noses or eyes.
     Although most scientists at the time, the mid-70s, believed colds were spread by virus-laden
droplets spread through the air when infected people coughed or sneezed, Gwaltney suspected
physical contact might play an important role. Sure enough, of the 15 people who had touched a
student volunteer, 11 became infected-compared with only one of those who had been sitting at the
table, and none who had spent three days and nights together.
     "The best evidence we have is that hand-to-hand contact is the most efficient way of transmitting
virus," says Gwaltney. The study was one of a series that helped establish Gwaltney's reputation as
a leading authority. Dr. Robert Couch says, "It would not be inappropriate to call him Mr. Common
Cold."
     When Gwaltney is asked how close scientists are to finding a cure, he replies: "If you mean 'get
rid of', I don't think we're going to be able to do that with cold viruses any time soon. But if you
look in the dictionary, you'll see that 'cure' is explained as a successful treatment. And we're not just
getting more effective at treating the symptoms (癥狀)-we're getting at the root cause too. "
1. Dr. Jack M. Gwaltney conducted the experiment in order to__________.
A. find out the most common cause of colds
B. infect the student volunteer
C. find out the role physical contact plays in the common colds
D. find out the role virus-laden air plays in the infection of colds
2. The result of the experiment shows that _________ plays an important role in the infection of colds.
A. sneezing at the infected person
B. touching the infected person
C. sitting together with the infected person
D. talking with the infected person
3. Which of the following statements is TRUE according to the passage?
A. Dr. Gwaltney was sure that hand-to-hand touch is the cause of the common cold.
B. Only one of the people who had spent three days and nights together became infected.
C. Dr. Gwaltney conducted many an experiment as to the cause of colds.
D. Dr. Gwaltney tested altogether 43 volunteers to see how they could develop colds.
4. Mr. Common Cold is______.
A. a newly-found virus
B. a nickname (綽號) of respect to Dr. Gwaltney
C. a method to cure colds
D. a way by which the other scientists laughed at Dr. Gwaltney
5. When Dr. Gwaltney gives a reply in the end of the passage, he means that______.
A. they have found the fundamental cause of colds
B. they have managed to wipe out the cold viruses
C. they have meant to experiment more
D. they have made much progress in dealing with colds

查看答案和解析>>

科目：高中英語 來源：山西省模擬題 題型：閱讀理解

閱讀理解
 Ask Dr .Jeffers This month Dr. Jeffers is answering questions about the human brain and how it works.
Dear Dr. Jeffers,  
     One of my colleagues, Felix Moeller, told me that scientists are learning to use computer to 'read minds'. Is there any truth to this story? -Jane Leon, New York, USA Dear Ms. Leon, Well, a lot of research is
being conducted in this area, but so far, the brain scanning equipment and corresponding computer
programs haven't been able to actually read thoughts. In one experiment, test subjects(受試者)were
connected to scanning equipment and shown two numbers on a screen. They were then asked to choose
between adding or subtracting(減)the two numbers. Using this method, researchers were able to follow
brain processes and make the correct assumptions(假設(shè))70 percent of the time. It's not quite mind reading, but it's certainly a first step. -Dr. J.
Dear Dr. Jeffers,
    My three-year-old son loves it when I dig my fingers into his sides and tickle (胳肢)him until he laughs
uncontrollably. The other day I noticed him trying to tickle himself but he couldn't do it. Why not?
-Glenn Lewis, Vancouver, Canada
Dear Mr. Lewis,
      It's because of how the brain works. The brain is trained to know what to pay attention to and what
to ignore. It causes us to ignore physical feelings we expect to happen, but it causes a mild panic reaction
when there is an unexpected feeling. For example, you don't notice how your shoulder feels while you're
walking down the street. But if someone comes up behind you and touches you lightly on the shoulder,
you may jump in fear. It's that unexpected part that causes the tickle reaction.
-Dr. J.
1.What can we learn from the answer to the first question?                        
A. Some equipment is able to read human minds.
B. Test subjects have been used to make decisions.
C. Some progress has been made in mind reading.
D. Computer programs can copy brain processes.
2. People laugh when tickled by others because the feeling is _______.                  
A. uncomfortable        
B. expected        
C. comfortable        
D. unexpected
3.Who has got a little child according to the text?                                  
A. Mr. Lewis          
B. Ms. Leon        
C. Mr. Moeller        
D. Dr. Jeffers
4. According to the text, Jeffers is probably _______.                                
A. a computer programmer  
B. a human brain expert 
C. a test subject  
D. a medical doctor

查看答案和解析>>

同步練習(xí)冊答案