练习册

  • 练习册
  • 试题
    精英家教网 > 高中英语 > 题目详情
    Most children, even the youngest of children, are delighted to be around cats and dogs. But these pets carry plenty of germs and allergens（过敏原）,prompting researchers to ask: Are cats and dogs really safe for children？
    A study finds that, contrary to many parents' fears, owning cats or dogs does not increase a child's risk of developing allergies, and in fact, may actually protect them. The study's lead author, Dr. Dennic Ownby of the Medical College of Georgia, says that even he was "very surprised" by the results. Ownby and colleagues followed more than 470 children from birth to age 6 or 7, comparing those exposed to cats and dogs during their first year of life to those who were not.
    By using skin-prick tests for detecting common allergies, the researchers found that, contrary to what many doctors had been taught for years, children who had lived with a pet were not at greater risk.
    Even more remarkable, children who had two or more dogs or cats had an even greater reduction, up to 77 percent, in risk of allergies. Researchers suggest this protective effect may be the result of early exposure to lots of bacteria that are carried by dogs and cats. Exposing young children to these bacteria helps" exercise" their immune systems early in life so that they're better able to resist allergic diseases later.
    There's something very important in that first year of life when the immune system is developing that we can retrain it away from an allergic response, said Dr. William Davis.
    And while researchers are not encouraging parents to buy dogs or cats just to reduce a child's allergy risk, they say if a family already has one or more animals, there's no need to get rid of them.
    小题1:Why do the researchers feel “very surprised” by the results of the study?
    A．Because the results are contrary to their expectation．
    B．Because so many children are playing with cats and dogs．
    C．Because parents are so much worried about their children．
    D．Because children with animals may develop allergies easily．
    小题2:Compared with children who have pets，those who haven’t  ______.
    A．will lose the chance to develop immune system
    B．may suffer allergic diseases more often
    C．will reduce the harm from bacteria
    D．can keep doctors away
    小题3:It can be inferred from the passage that ______．
    A．pets are ill-treated by their owners
    B．less families would like to own cats and dogs
    C．keeping pets is a good way to keep children healthy
    D．the results of the study can make families with pets feel at ease
    小题4:The underlined word “it” in the fifth paragraph refers to________.
    A．the early life
    B．an allergic disease
    C．immune system
    D．something important
    小题5:What may be the best title of the passage?
    A．How to protect your kids from allergies
    B．Your pets may be helping your kids
    C．Bacteria do good to your kids
    D．Advantages of owning pets

    小题1:A
    小题1:B
    小题1:D
    小题1:C
    小题1:B
    略
    练习册系列答案
    年级 高中课程 年级 初中课程
    高一 高一免费课程推荐！ 初一 初一免费课程推荐！
    高二 高二免费课程推荐！ 初二 初二免费课程推荐！
    高三 高三免费课程推荐！ 初三 初三免费课程推荐！
    相关习题

    科目：高中英语 来源：不详 题型：阅读理解

    A team of US psychologists have found that talking to another person for ten minutes a day helps with memory.
    "Socializing is just as effective as more traditional kinds of mental exercise in boosting memory and intellectual performance," Oscar Ybarra, a psychologist at the University of Michigan Institute for Social Research, said in a statement.
    In one investigation, they analyzed data on 3610 people, aged 24 to 96.
    They found that the higher their level of social interaction (交流), the better their cognitive (认知的) functioning.  Social interaction includes getting together or having phone chats with relatives, freinds and neighbors.
    In another experiment, the researchers conducted lab tests on 76 college students, aged 18 to 21, to evaluate how social interactions and intellectual exercises affected the results of memory and mental performance tests.
    The students were divided into three groups: the social interaction group had a discussion of a social issue for 10 minutes before taking the tests; the intellectual activities group completed three tasks (including a reading comprehension exercise and a crossword puzzle) before the tests; and a control group (对照组) watched a 10-minute clip (电源片段) of the Seinfeld television show.
    "We found that short-term social interaction lasting for just 10 minutes improved participants’ intellectual performance as much as engaging in so-called ’intellectual’ activities for the same amount of time," Ybarra said.
    The study was expected to be published in the February issue of the journal Personality and Social Psychology Bulletin.
    小题1:The underlined word "boosting" in the second paragraph can be replaced by ______.
    A．improvingB．decreasingC．preventingD．training
    小题2:Which is not included in social interaction?
    A．Having a talk with a neighbor.B．Attending a birthday party.
    C．Watching TV at home alone.D．Calling your classmates
    小题3:What’s the purpose of the experiment on 76 college students?
    A．To judge the effect of social interaction on memory and intelligence.
    B．To find out what is real social interaction.
    C．To learn how much time is needed for social interaction.
    D．To show the function of people’s cognition.
    小题4:Which of the following questions may be asked in the social interaction group in the experiment?
    A．What does the author want to show us?
    B．Do you like living in a big city or a small one?
    C．Which word can be used to fill in the blank?
    D．What is the main idea of the second paragraph?
    小题5:What’s the main idea of the passage?
    A．Intellectual exercises improve memory.
    B．Different people have different ways of communication
    C．Communicating with others keeps you healthy.
    D．Social interaction makes you smart

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解

    Paragraph 1
    Scientists have learned a lot about the kinds of food people need. They say that there are several kinds of food that people should eat every day. They are: (1) green and yellow vegetables of all kinds. (2) citrus(柑桔) fruits and tomatoes; (3) potatoes and other fruits and vegetables; (4) meat of all kinds, fish and eggs; (5) milk and foods made from milk; (6) bread or cereal(谷类), rice is also in this kind of food; (7) butter, or something like butter.
    Paragraph 2                                                                 
    People in different countries and different places of the world eat different kinds of things. Foods are cooked and eaten in many different kinds of ways. People in different countries eat at different times of the day. In some places people eat once or twice a day; in other countries people eat three or four times a day. Scientists say that none of the differences is really important. It doesn’t matter whether foods are eaten raw or cooked, canned or frozen. It doesn’t matter if a person eats dinner at 4 o’clock in the afternoon or at eleven o’clock at night. The important thing is what you eat every day.
    Paragraph 3
    There are two problems, then, in feeding the large number of people on earth. The first is to find some ways to feed the world’s population so that no one is hungry.The second is to make sure that people everywhere have the right kinds of food to make them grow to be strong and healthy.
    小题1:According to the scientists, which of the following groups of food is the healthiest for your lunch?
    A．chicken, apples, cereal, cabbagesB．potatoes, carrots, rice, bread
    C．oranges, bananas, fish, tomatoesD．beef, pork, fish, milk
    小题2:It is important for people to eat _______.
    A．three times a dayB．dinner at twelve o’clock
    C．cooked food all the dayD．something from each of the seven kinds of food every day
    小题3:People in different countries and different places of the world _______.
    A．has the right kinds of food to eatB．cooks their food in the same way
    C．has their meals at the same timeD．eat food in different ways
    小题4:If there is Paragraph 4, what do you think is going to be talked about?
    A．When people eat their lunchB．What to do with the two problems
    C．How to cook food in different waysD．Why people eat different kinds of food

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：完形填空

    Nancy Volk operated a sidewalk cafe in Anoka, Minnesota to support her family.
    Dan Heins, one of the cafe’s regular customers, had a  36 : kidney dialysis（肾透析） from 6 to 10 a.m on Tuesdays, Thursdays, and Saturdays, after   37  at the cafe. The 56-year-old owner of the small cafe, Nancy   38  that Heins' diabetes(糖尿病)was 39  for his kidney failure and the cut-off of his leg. And Dan knew that Nancy, a single mother with three daughters, worked two other jobs to  40 the cafe open and meet her housing loans.
    One morning as he ordered his breakfast, he 41  he would be on kidney dialysis the rest of his life if he didn't receive a(n)  42 . Nancy didn't hesitate, simply saying “I’ll donate”. A normal  43  volunteered to give him an organ? It seemed   44 to Dan, and Nancy had to spend a few weeks   45  him she was serious. The day before Thanksgiving in 2009, the results of the medical tests came in: She was a  46 .
    While they were  47  the transplant, Dan’s other leg was cut off and Nancy’s financial 48  grew from bad to worse.
    Nancy decided to close the cafe last September much  49  she loved it. At the same time, her home was going into   50 . Dan's insurance would  51  her surgery costs, but she was worried too much that she wouldn't be able to work the part-time jobs for six weeks.
    Steve Ohlsen, another customer of the cafe,   52  a donation box near the register. In less than one month, people gave Nancy several thousand dollars—enough to ensure   53  on her home while she recovered.
    Nancy and Dan had their 54  in September. Four months later,Dan is  55 dialysis, and Nancy has sent thank-you notes to her supporters.
    小题1:
    A．wayB．serviceC．routeD．routine
    小题2:
    A．breakfastB．supperC．lunchD．dinner
    小题3:
    A．guessedB．knewC．imaginedD．concluded
    小题4:
    A．seriousB．impossibleC．responsibleD．important
    小题5:
    A．keepB．runC．causeD．want
    小题6:
    A．shouted B．murmuredC．smiledD．informed
    小题7:
    A．operationB．surgery C．transplant D．transfer
    小题8:
    A．friendB．relationC．shopkeeperD．student
    小题9:
    A．excitingB．unrealC．unusualD．moving
    小题10:
    A．cheatingB．convincingC．informingD．involving
    小题11:
    A．matchB．partnerC．companionD．mate
    小题12:
    A．searching forB．waiting forC．looking intoD．taking in
    小题13:
    A．positionB．professionC．situationD．condition
    小题14:
    A．althoughB．whileC．thoughD．when
    小题15:
    A．troubleB．businessC．serviceD．luck
    小题16:
    A．offerB．provideC．giveD．cover
    小题17:
    A．madeB．laidC．placedD．set
    小题18:
    A．payments B．expensesC．repairsD．fees
    小题19:
    A．personalitiesB．supportersC．surgeries D．lives
    小题20:
    A．offB．downC．upD．to

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解

    Bruce Alberts, the former President of the National Academies (USA), has now taken over as Editor-in Chief of Science. Judging by his editorial in this week’s issue Considering Science Education there could be some interesting times ahead in Science offices.
    Here’s part of what Bruce has to say about science education…
    I consider science education to be critically important to both science and the world, and I shall frequently deal with this topic on this page. Let’s start with a big-picture view. Science has greatly advanced our understanding of the natural world and has enabled the creation of countless medicines and useful devices. It has also led to behaviors that have improved lives. The public appreciates these practical benefits of science, and science and scientists are generally respected, even by those who are not familiar with how science works or what exactly it has discovered.
    But society may less appreciate the advantage of having everyone acquire the ways of thinking and behaving that are central to practice of successful science: scientific habits of mind. These habits include a critical attitude toward established claims and a strong desire for logic and evidence. As famous astronomer Carl Sagan put it, science is our best detector (检测器). Individuals and societies clearly need a means to logically test the constant clever attempts to operate our purchasing and political decisions. They also need to challenge what is unreasonable, including the intolerance that led to so many regional and global conflicts.
    So how does this relate of science education? Might it be possible to encourage, across the world, scientific habits of mind, so as to create more rational (理性的) societies everywhere? In principle, a strong expansion of science education could provide the world with such an opportunity, but only if scientists, educators, and policy-makers redefine (重新定义) the goals of science education, beginning with college-level teaching. Rather than only conveying what science has discovered about the natural world, as is done now in most countries, we should provide first all students with the knowledge and practice of how to think like a scientist.
    小题1: Which of the following is NOT included in the “scientific habits of mind”?
    A．A critical attitude toward established claims.B．A strong desire for logic.
    C．A clever and active mind.D．A strong desire for evidence.
    小题2: What does the underlined phrase “such an opportunity” refer to in the last paragraph?
    A．To create more rational societies everywhere.
    B．To relate decision-making to science education.
    C．To encourage science education around the world.
    D．To set right goals of science education.
    小题3:In Bruce Alberts’ opinion, which is the most important in science education?
    A．Offering all students enough practice to drill their mind.
    B．Equipping all students with a thinking model of a scientist.
    C．Telling students what science has discovered about the natural world.
    D．Advising all students to challenge all established scientific achievements.
    小题4:Which of the following would be the best title for this passage?
    A．Bruce Alberts, a great science educator
    B．Science education and world peace
    C．The government and science education
    D．Bruce Alberts’ opinion on science education

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解

    阅读下面短文，从每题所给的四个选项中，选出最佳答案。
    Hi, dear boys and girls! Do you know how to be a healthy kid? Here are some rules you should follow.
    First, eat different foods, especially fruit and vegetables. You may have a favorite food, but you'd better eat something different, if you eat different foods, you will probably get more nutrients (营养物质) your body needs.
    Then, drink water and milk as often as possible. When you're really thirsty, cold water is the No. l choice. Milk is a great drink that can give you more calcium (钙) your body needs to grow strong bones .
    Next, listen to your body. How do you feel when you are full? When you are eating, notice how your body feels and when your stomach feels comfortably full. Eating too much will not make you feel comfortable and make you fat.
    Afterwards, limit (限制) screen time. Screen time is the time you watch TV, DVDs and videos, or using computers. It is good to take more exercise such as basketball, bike riding and swimming. You can't watch TV for more than two hours a day.
    Finally, be active. One thing you'd like to do as a kid is to find out which activity you like best. Find ways to be active every day.
    Follow these rules and you can be a healthy kid.
    小题1:You have to eat different kinds of foods especially _________.
    A．meatB．hamburgers　C．sweetsD．fruit and vegetables
    小题2:Which kind of drinks can give you more calcium?
    A．Juice.　　B．Milk.C．Cold water.D．Tea.
    小题3:According to the passage, how many rules should you follow if you want to be healthy?
    A．Five.　　B．Nine.　　　　　C．Fifteen.D．Thirteen.
    小题4:According to the passage, which of the following is TRUE?
    A．When you're eating, you don't have to pay attention to how your body feels.
    B．You can eat your favorite food as much as you can .
    C．You can watch TV whenever you like to get more information.
    D．We should try to live in an active way in our life.
    小题5:Which is the best title of the passage?
    A．How to make yourself popularB．How to be a healthy kid
    C．How to be a popular kidD．How to make your parents healthy

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解

    You maybe surprised to learn that one of the best steps you can take to protect your health is to step outside and spend some time in the grass, dirt and water．
    Our ancestors enjoyed the healing power of nature , and now scientists are starting to catch up．According to research in recent years, just having a view of nature has been shown to improve hospital patients'  recovery and reduce illness rates among office workers．Also, exposure （曝露）to wildlife, horseback riding, hiking, camping and farms can be helpful for a variety of health conditions in adults and children．
    Much of this type of research is focusing on children, and in fact an entire movement has quickly developed to connect kids with the healing power of nature．
    Obesity （肥胖）．Rates of childhood obesity have grown sharply in recent years, and this is partly because of reduced outdoor activity time．Increasing the time students spend learning about nature, both in and outside the classroom, would help solve this problem．Such lessons are often more attractive for students and often lead them to become more active outside．
    Attention deficit hyperactivity disorder （ADHD） （注意力缺失症）．Exposure to ordinary natural settings （环境） in the course of common after-school and weekend activities may be effective in reducing attention deficit symptoms in children．Participation in green activities —such as nature walks—helped ADHD patients from a wide range of backgrounds to stay focused and complete tasks．
    Stress．Access to nature, even houseplants, can help children cope with stress．
    Depression  and  seasonal  emotional  disorder．Major  depression requires medical treatment, but physical activity, especially outdoors, can help ease symptoms．For your average case of winter blues, experts suggest spending time outside every day and, if possible, taking the family to a sunny vacation spot in mid-winter．
    Experts emphasize that you needn' t go to wilderness preserves to enjoy nature' s benefits—simply walking in a city park or growing in a rooftop garden can make a difference．
    小题1:It can be inferred from the first two paragraphs that____．
    A．ancient people were not familiar with the healing power of nature．
    B．modern people are not familiar with the healing power of nature．
    C．the healing power of nature works better on children．
    D．the healing power of nature works better on office workers．
    小题2:According to Para．4, lessons about nature_____．
    A．should engage parents in them
    B．should take place outdoors
    C．are used widely at schools
    D．are liked by students
    小题3:Exposure to green areas in neighborhoods can_____．
    A．improve children' s skills at learning
    B．help reduce ADHD symptoms
    C．treat major depression
    D．cure winter blues
    小题4:What can be inferred from the last paragraph?
    A．You can only enjoy nature's benefits in the wilderness．
    B．A common natural setting is beneficial to your health．
    C．A city park and a rooftop garden have different benefits．
    D．Too many people in the wilderness will reduce the benefits of nature．

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解


    小题1: If you happen to be the 200th customer to buy Cholesterolblock, you will         .
    A．be able to buy it at a low priceB．be the luckiest one online
    C．try it free of chargeD．change your diet
    小题2:Liptor®, Zocor®, Crestor® are         .
    A．diseasesB．side effectsC．medicinesD．cholesterol
    小题3: CholestrolblockTM has the following advantages EXCEPT that _____________________.
    A．it helps take cholesterol out of whatever food you eat.
    B．it has been proved useful in hospital testing.
    C．it helps people absorb at least 42% cholesterol.
    D．it sells best on Internet every month.
    小题4:Where can you most probably read this passage?
    A．In a travel guide book.B．On a university bulletin board.
    C．In a health magazine.D．In a doctor's prescription.

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解

    Good posture certainly shows good health. It also adds to a body’s energy and beauty. The body is not handsome when the back is bent and neck thrusts forward. Bad posture suggests the impression that a person is tired, lacking in energy, bored, or weak. Tiredness may sometimes be the cause of bad posture. Most often, however, it is due to careless and poor health habits. Whatever it causes, bad posture affects one physically. The muscles are stretched and pulled into unnatural positions, which can lead to poor base of the body’s various systems.
    Nutrition is the study of how the body takes food and uses it. This science provides information about the kinds of food a person must eat to improve and maintain good health. Such knowledge helps him develop and form people habits to his problems of healthful living. People habits of nutrition can be developed by paying attention to: (1) the variety of food included in the diet; (2) the quality of each kind of food eaten. A diet, or the food regularly eaten, must contain all the necessary factors.
    Many physicians believe that overweight is one of the greatest dangers to good health. This condition often leads to a shorter life. An overweight person is also easier to suffer disease, and various disorders of the digestive system. A person’s weight directly has something to do with the amounts of food he eats.
    All foods can make a person fat if too much is eaten. In reducing, the safe weight loss is about two pounds a week. The sensible way to lose weight is to decrease the gaining starchy(含淀粉的) foods, fats and sweets in the diet.
    小题1: According to this passage, which of the following is suggested about the good health habits?
    A．Good way of holding your body.B．Balanced food.
    C．Right body weight.D．All of the above
    小题2: According to this passage, bad posture is most probably caused by_______.
    A．tiredness, boredom and weaknessB．lack of energy
    C．carelessness and poor health habitsD．overworking and illness
    小题3:Which of the following eating habits is NOT proper in terms of maintaining good health?
    A．Vegetables, meat and water only
    B．A suitable quantity of each kind of food
    C．Fats being part of diet.
    D．Various foods included in the diet
    小题4: We can infer from the statement “all foods can make a person fat if too much is eaten” that___.
    A．to lose weight you had better eat properly for daily meals
    B．the most effective way to lose weight is to have no fat and sweet
    C．even vegetables can make you put on weight, so there is no need to have fat and sweet.
    D．a shorter life is a sure result of overweight

    查看答案和解析>>

    同步练习册答案