题目内容

Cancer researchers urged people on Wednesday to take more vitamin D to lower risk of cancer， saying studies showed a clear link. "Our suggestion is for people to increase their intake， through diet or a vitamin supplement，" Dr. Cedric Garland said in a telephone interview.
Garland's research team reviewed 63 studies， including several large long-term ones， on the relationship between vitamin D and certain types of cancer worldwide between 1966 and 2004. "There's nothing that has this ability to prevent cancer，" he said， urging governments and public health officials to do more to fortify foods with vitamin D.Garland is part of a University of California at San Diego Moores Cancer Center team that published its findings this week online in the American Journal of Public Health.    Vitamin D is found in milk， as well as in some fortified orange juice， yogurt and cheeses， usually at around 100 international units （IU） a serving. People might want to consider a vitamin supplement to raise their intake to 1000 IUs per day， Garland said， adding that it was well within the safety guidelines established by the National Academy of Sciences.
The authors said that taking more vitamin D could be especially important for people living in northern areas， which receive less vitamin D from sunshine.
African Americans， who don't produce as much of the vitamin because of their skin colour， could also benefit significantly from a higher intake， the authors said.
小题1: According to the passage， people are advised to take more Vitamin D because_________.
A．it is nutritious
B．it can‘t harm people’s health
C．it is not taken enough every day
D．it can lower cancer risk
小题2: Which of the following can not help people get more Vitamin D？
A．Have more meatB．Have some sunshine
C．Have a vitamin supplementD．Have more fortified cheese
小题3:Who can Garland probably be？
A．A scientistB．A health researcher
C．A doctorD．A public health official
小题4:Which of the following food can lower people‘s chance of getting cancer？
A．Fortified orange juiceB．Milk
C．Fortified yogurtD．All of the above
小题5:People from which area should take more Vitamin D according to the passage？
A．Asian peopleB．American people
C．European peopleD．African people

小题1:D
小题2:A
小题3:B
小题4:D
小题5:D

试题分析：文章介绍了研究表明维他命D可以降低患癌症的几率，并且告诉了读者几种获取维生素D的方法。
小题1:细节题。根据文章中专家所说的话take more vitamin D to lower risk of cancer，可得知多吃维他命D可以降低患癌症的几率应该选择，选D
小题2:细节题。在文章中寻找有关于维他命D的食物来源，Vitamin D is found in milk, as well as in some fortified orange juice, yogurt and cheeses，并没有提到肉，所以选A
小题3:推理题：文章的第一句话Cancer researchers urged people on Wednesday to take more vitamin D to lower risk of cancer可知这是研究人员的花，第一段的最后一句话Dr. Cedric Garland said in a telephone interview.可以推断出： Dr. Cedric Garland是一个健康研究人员。选B
小题4:细节题。维他命D可以降低癌症几率，所以我们要找到可以获取维他命D的来源Vitamin D is found in milk, as well as in some fortified orange juice, yogurt and cheeses,D项包含了这些食物。所以选D
小题5:推理题：从最后一段的句子：“African Americans, who don't produce as much of the vitamin because of their skin colour, could also benefit significantly from a higher intake,” the authors said.可以推断出非洲人应该多摄入维生素D。选D
练习册系列答案
相关题目
In the US and Britain, the slogan around colleges was “Save water. Shower with a friend.” Now, Wuhan University has come up with another system for the campus bathhouse. It charges students for the amount of time in a shower. Before entering the bathhouse, students pay for the amount of time they want in the shower with cash or their student ID card. The clock starts ticking the minute the tape is turned on. It pauses when a button is pressed for soap. An integrated circuit(IC) card reader at each tap shows the time. No money, no water. The benefits of the new system can be seen with the old system, which charged 1 yuan for each person regardless of time in the shower. The university used about 320 tones of water daily under the old system, but only 160 tons now.
Many students use the new system but opinions on it are divided. Some students say it is bad because bathing had become a sort of race. Many people using it for the first time are not sure how long they need to shower. Some might be embarrassed if their time is up and they’re still covered in soap. They have to ask the bathhouse worker to help them buy extra time.
“It’s a flaw in the system that you can not buy extra time on the ID card,” said Ren, a freshman in Wuhan University. The university is also considering some students’ suggestions that they be allowed to pay after they’ve finished the shower. Not surprisingly, some are complaining about losing the hour shower. But many students say the move helps them develop a water-saving sense.
Without the time limits, most students tended to shower for 30 to an hour in the bathhouse.
Some even used the hot water to wash their clothes. “In my experience, 10-20 minutes is enough,” said Dai Zhihua, a third-year student who usually takes 8 minutes.
A similar system has been installed in other universities. Shanghai Normal University introduced it at its Fengxiang Campus in September. The bathing fee there is 0.2 yuan per minute. One male student responded by setting a record with a two-minute shower.
51. According to the passage, which of the following is NOT true?
A. Students pay for the amount of time they want in the shower.
B. The clock times all through while the student is bathing except when the bather paused for soap.
C. If money runs out, there will be no water.
D. Having finished bathing, the student has to pay for it.
52. The underline word “flaw” (Paragraph3) most probably means______.
A. perfection   B. advantage    C. pity      D. fault
53. Since the new system has performed, ______ of water can be saved.
A. a quarter   B. one third   C. one half   D. two thirds
54. It can be inferred from the passage that______.
A. the new operation can solve the water crisis.
B. The new operation can raise students’ environmental awareness.
C. a similar operation has been set in other universities.
D. The university has saved a lot of water by using the new system.
55. In which column can you find this passage?
A. People.    B. Society.  C. Campus Life.   D. Lifesty
Eco City Farms(生态城市农场) are becoming more popular in cities and towns around the Unites States.
Eco City Farms in Edmonton, Maryland, is located near shopping centers, car repair shops and homes. The neighborhood is a working-class community(社区). People do not have very much money. And they have limited access to fresh food in markets.
Over the past two years, the farm has attracted volunteers from the community like Marcy Clark. She schools her four children at home. On a recent day she brought them to Eco City Farms for a lesson. Her son Alston Clark thinks his experience is very valuable.“I like coming out here,”he says,“You know, you connect with the earth, where your food comes from. You appreciate the food a little bit more.”
Margaret Morgan started Eco City Farms. She thinks of it as a place where people can learn to live healthier lives. “Growing food in a community brings people together,”she continues,“Every piece of what we do here is a demonstration(示范) to show people everything about how to have an eco-friendly community.”she says. From the Eco City Farms people come to know that they are not only growing food and raising chickens and bees, but improving the soil with compost(肥料)made from food waste.
Eco City Farms is an experimental operation. The farm gets its power not from the local electricity networks, but from the sun with solar panels. In winter, the green house use a geothermal(地热)system.
Vegetables can be grown all year. So once a week, all winter long, neighbors like Chris Moss and her three children bike to the farm to pick up a share of the harvest.
“I like eating the vegetables ”say five-year-old Owen Moss.
小题1:What is mainly talked about in the passage?
A．Eco City Farms save a lot of energy.
B．Eco City Farms are gaining popularity.
C．Eco City Farms are influencing community life.
D．Eco City Farms helps the working-class live better.
小题2:According to the passage, Eco City Farms are close to the following places EXCEPT______.
A．shopping centers B．car repair shops
C．fast-food restaurantsD．working-class community
小题3:What is the author’s attitude toward Eco City Farms?
A．Enthusiastic(热心的).B．Disappointed.
C．Surprised.D．Doubtful.
小题4:In which column(专栏) of a newspaper can you most probably read this article?
A．People.B．Travel.C．Environment.D．Education.
We humans love to scare ourselves. Newspapers and TV news are full of shock-horror stories about the killer flu virus(流感病毒)but are there things we can do to cut our risk of catching it?
Every year, people in Britain catch the flu virus and some of those who are already ill, or are very young, may die. It is very sad, but modern treatment means that many deaths can be avoided.
Experts tell us that the world is another flu epidemic(流行)and that the latest bird-flu virus would be the most likely cause. Humans can catch the disease only after closely contacting with a sick bird. However, if someone who had normal flu was to come into contact with bird flu, this could be very dangerous. The bird flu virus could attach(附在)itself to the human flu virus, mutate and then start to spread from person to person.
Coughs and sneezes(打喷嚏)always have spread diseases, especially colds and flu, and they still do. If bird flu does begin to infect humans, it will spread through coughs and sneezes.
If you want to stay free of flu and someone coughs or sneezes at you, what should you do?
First, keep your hands away from your face and wash them and your face as soon as you can. If a cough or a sneeze spray misses your face and you accidentally touch a droplet with your hands and then touch your face, the flu or cold bug could creep into your system.
小题1:The chances of most people catching bird flu are very small because __________.
A．they are strong enough to resist the infection
B．only after closely contacting a sick bird can they be infected
C．bird flu does not happen very often in the world
D．only those who are ill can be infected
小题2:In the passage the underlined word “mutate” probably means“__________”.
A．differB．produceC．increase D．change
小题3:If a man with common flu is infected with bird flu, __________.
A．there must be no cure for him
B．the disease will spread among humans
C．he must feel cold
D．he is likely to die
小题4:Which of the following statements is true according to the passage?
A．Bird flu is the most dangerous disease.
B．Normal flu can be easily changed into Bird flu.
C．We don’t need to worry about flu virus.
D．The person who has normal flu and comes into contact with bird flu can easily get Bird flu.
小题5:The last paragraph of the passage tells us __________.
A．the reason why people with flu often cough
B．coughs and sneezes are very dangerous
C．how to protect ourselves from being infected
D．how to avoid coughs and sneezes
Nuclear power’s danger to health, safety, and even life itself can be summed up in one word: radiation.
Nuclear radiation has a certain mystery about it, partly because it cannot be detected by human senses. It can’t be seen or heard, or touched or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around us but we can’t detect them, sense them, without a radio receiver. Similarly, we can’t sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things.
At very high levels, radiation can kill an animal or human being immediately by killing masses of cells in vital organs. But even the lowest levels can do serious damage. There is no levels of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be serious. This is the case when only a few cells are hit, and if they are killed immediately. Your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They can grow into cancer. Sometimes this does not show up for many years.
This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the victim being aware at the time that damage has occurred. A person can be irradiated（辐射）and feel fine, then die for cancer five, ten, or twenty years later as a result. Or a child can be born weak as a result of radiation absorbed by its grandparents.     
Radiation can hurt us. We must know the truth.         
小题1:Which of the following statements is true?                   
A．Nuclear radiation is just like common radio waves.
B．Nuclear radiation can cause cancer to human beings.
C．Nuclear radiation can be detected by human senses.
D．Nuclear radiation can be safe to human beings if its level is low.
小题2:How can nuclear radiation kill an animal?                    
A．By damaging its heart.B．By killing a few cells.
C．By hitting any place in its body.D．By killing many cells in important organs.
小题3: If a human being is hit by nuclear radiation, he may _______.
A．die of cancer after many yearsB．die immediately
C．have a child who may be born weak D．all of the above
People who averaged fewer than seven hours of sleep per night in the weeks before being exposed to the cold virus were nearly three times as likely to get sick as those who averaged eight hours or more, a new study found.
Researchers used frequent telephone interviews to track the sleep habits of more than 150 men and women aged 21 to 55 over the last few weeks. Then they exposed the subjects to the virus, quarantined (检疫隔离) them for five days and kept track of who got sick.
Besides sleeping more, sleeping better also seemed to help the body fight illness: Patients who fared better on a measure known as “sleep efficiency”—the percentage of time in bed that you’re actually sleeping—were also less likely to get sick.
The results held true even after researchers adjusted for elements such as body-mass index, age, sex, smoking and pre-existing antibodies (抗体) to the virus.
The researchers aren’t exactly sure why sleeping better makes you less likely to develop a cold. But they do try to give an answer: “Sleep disturbance influences the regulation of symptom mediators (调节因子) that are released in response to infection.” In plain English, maybe tossing and turning when you’re infected with the cold virus contributes to the symptoms that define a cold.
The researchers were based at Carnegie Mellon, the University of Pittsburgh and the University of Virginia, and the study was funded by the National Institutes of Health.
小题1: According to the passage, what does the underlined word “subjects” mean in paragraph 2?
A．areas of knowledge in a school
B．people being studied in an experiment
C．research topics
D．animals being tested
小题2:It is shown in the passage that _______.
A．the researchers obtain information about the sleep habits by frequent interviews
B．the researchers do their research in the National Institutes of Health
C．people hope to avoid being infected with a cold by sleeping as much as possible
D．sleeping more and better helps regulate the symptom mediators
小题3:What’s the best title of the passage?
A．The Relationship Between Virus and Cold
B．How to Sleep Well
C．Good Sleep Helps Fight a Cold
D．The More the Sleep, the Better Your Body
The rising costs of health care have become a problem for many countries in the world. To deal with this problem, it is recommended that a big part of the government’s health budget be used for health education and disease prevention instead of treatment. Actually, many kinds of diseases are preventable in many ways and preventing a disease is usually much cheaper than treating it. For example, people could avoid catching a cold if they dressed warmly when the weather starts getting cold. But many people get sick because they fail to do so, and have to spend money seeing a doctor.
Daily habits like eating more healthy food would have kept millions of families from becoming bankrupt if the patients had taken measures for early prevention. For instance, keeping a balanced diet, such as not consuming too much animal fat and insuring a steady intake of vegetables and frits, seems to be quite important.
One very effective and costless way of prevention is regular exercise, which is necessary for a healthy mind and body. Regular exercise, such as running, walking, and playing sports is a good way to make people feel better and reduce stress.
In addition, health education plays a key role in improving people’s health. By giving people more information about health, countries could help people understand the importance of disease prevention and ways to achieve it. For example, knowing one’s family medical history is an effective way to help keep healthy. Information about health problem among close relatives will make them aware of what they should do to prevent certain diseases through lifestyle changes, Which will work before it is too late. 
However, stressing disease prevention does not mean medical treatment is unimportant. After all, prevention and treatment are just two different means toward the same effect. In conclusion, we could save money on health care and treat patients more successfully if our country spends more money on health prevention and education.
小题1:What’s the best title of the passage?
A．Prevention or Education?B．Prevention or Treatment?
C．Health or Illness?D．Exercise or Illness?
小题2:Which of the following can replace the underlined word “bankrupt”?
A．Unable to be curedB．Unable to pay one’s debts
C．Stronger than ever beforeD．More successful than ever before
小题3: We learn form the passage that _______
A．dressing warmly can prevent disease
B．a balanced diet is cheaper than regular exercise
C．the more health education, the better
D．the government’s health budget should be increased
小题4:Which of the following shows the structure of the passage?
 
Risk of death is 3.5 to 5 times greater for obese (肥胖的) smokers than it is for people who have never smoked and are at a normal weight, according to a study published in the November, 2006 issue of the American Journal of Preventive Medicine.
The study, which began with a self-administered questionnaire taken between 1983 and 1989, asked more than 80,000 radiologic technologists aged 22 to 92 questions about age, height, weight and smoking behavior.
BMI (body mass index) was calculated, with a BMI of 30 to 34.9 being considered obese, and 35 and over being very obese. Smoking behavior was analyzed by looking at a person's tobacco consumption level, number of years smoked, and current smoking status. Researchers then followed participants through December of 2002, noting the number of deaths that occurred.
The study involved researchers from the National Cancer Institute, the University of Minnesota and the American Registry of Radiolegic Technologists.
Key Findings:
20 percent of obese adults in the United States smoke.
Obese smokers face a greater risk of death from cancer and circulatory disease.
Current smoking is a greater risk factor for death by cancer than obesity is, generally speaking.
The higher a person's pack-years (number of packs smoked per day times the number of years smoked) are, the greater the risk of death.
Men and women of all ages faced an elevated risk of death due to circulatory disease as BMI increased. And for those who were both obese and currently smoking, risk of circulatory disease increased 6 to 11 times under the age of 65, as compared to their never-smoking, normal weight counterparts.
While it's not surprising that obesity coupled with smoking is a recipe for trouble, it is important to highlight this growing health concern in America today.
Taking Charge of Your Health
Making healthy choices can be difficult when we're constantly exposed to products that are dangerous to our health, but it's not impossible. With education and some motivation, we all have the ability to make lasting changes for the better. If you're an overweight smoker worried about gaining weight due to quitting, take heart. It's never too late to change your course and even reduce damage to some extent.
小题1:60. What is the American Journal of Preventive Medicine?
A．An medical institute.B．A research center.
C．A medical magazineD．A TV station
小题2:Which of the following is true according to the text?
A．Obese smokers are less likely to suffer from cancer.
B．Obese smokers are more likely to suffer from cancer.
C．Obese smokers tend to gain fewer body mass index.
D．Obese smokers tend to get heavier than those who never smoke.
小题3:According to the author, it is ________ to get rid of smoking.
A．easy and possibleB．difficult and impossible
C．easy ant worthwhileD．difficult but worthwhile
小题4:What is the purpose of the text?
A．To inform the readers of the findings about obese smoking.
B．To warn the readers of the danger of obese smoking.
C．To tell us what obese smoking is.
D．To call on the obese smokers to quit smoking.


Children pushed in buggies which face away from their parents may suffer long­term emotional（情感的）and language problems，according to a study published on Friday.
The research，believed to be the first of its kind，found that children who were not facing the person pushing them were less likely to talk，laugh and communicate with their parents.
The findings were based on a study of 2,722 parents and babies and an experiment where 20 babies were wheeled in buggies for a mile，facing their parents for half the journey and facing away for the other half. Parents using face­to­face buggies were twice as likely to talk to their children while the babies’ heart rates fell and they were twice as likely to fall asleep，showing that they were feeling relaxed and safe.
In addition，only one baby out of the 20 studied laughed while sitting in an away­facing buggy.
“Our data(数据) suggests that for many babies today，life in a buggy is emotionally impoverished and possibly stressful. Stressed babies grow into anxious adults，” said Dr Suzanne Zeedyk，Developmental Psychologist at Scotland’s Dundee University who carried out the research.
The study，which was published by National Literacy Trust as part of its “Talk To Your Baby” campaign，found that 62 percent of all children observed travelled in away­facing buggies.
Zeedyk said it would have a negative effect on babies’ development if they spent a long time in away­facing buggies，which would be bad to their ability to communicate with their parent at a time when their brain was developing rapidly.
Laura Barbour of the Sutton Trust，a social mobility charity which funded the research，said buggy manufacturers(制造商) should look closely at the findings.
小题1:Using away­facing buggies may________.
A．benefit both the babies and their parents
B．affect babies’ language ability permanently
C．help babies communicate with their parents
D．have positive effect on babies’ development
小题2:Which of the following is TRUE according to the passage?
A．Parents may talk twice with the babies in away­facing buggies.
B．The study suggests children feel relaxed and safe in buggies.
C．The samples (案例)of the study were 20 babies wheeled in buggies.
D．One of the 20 babies was twice as likely to fall asleep in buggies.
小题3:Which of the following would be the best title for the text?
A．Best for Kids to Face Parents in Buggy
B．Best for Kids to Communicate with Parents
C．Stressed Babies Grow into Anxious Adults
D．Buggy Manufacturers Care about the Finding

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网