练习册

  • 练习册
  • 试题
    精英家教网 > 高中英语 > 题目详情

    Scientists have discovered a special biological behavior in dolphins（海豚） that could lead to a treatment for late-onset diabetes（晚发的糖尿病） in humans. Studies on dolphins found that healthy dolphins switch into a diabetic-like state overnight when they are not feeding, but return to normal when they eat the following morning.

    The extraordinary finding has led scientists to suggest that dolphins have “genetic switch” that allows them to imitate diabetes while they are not feeding for a night, without suffering any ill effect.

    If researchers can identify a similar genetic pathway in human, they may be able to develop drugs to effectively switch off diabetes. Some 2.2 million people in Britain have type 2 (or late-onset) diabetes, a figure that is expected to reach 4 million by 2025 as a consequence of rising levels of obesity（肥胖）.

    The tissues of people with type 2 diabetes have become resistant to insulin（胰岛素）so they lose the ability to control sugar levels in their blood. The condition can damage the heart, eyes, kidneys（肾脏） and nerves and contribute to 5% of all deaths, according to the World Healthy Organisation.

    Dolphins appear to imitate diabetes to keep high levels of blood sugar when food is rare. Like humans, dolphins need some sugar in their blood for their brains to function normally. Venn-Watson’s team analysed 1,000 blood samples（样本） from 52 dolphins while they didn’t eat anything overnight and fed in the morning. At night time, the dolphins’ metabolism（新陈代谢）changed greatly and showed similar characteristics to that seen in people with type 2 diabetes.

    “It is our hope that this discovery can lead to new ways to prevent, treat and maybe even cure diabetes in humans,” said Stephanie Venn-Watson, director of clinical research at the National Marine Foundation in San Diego.

    1.What’s the main idea of the passage?

    A. Humans get some idea of treating diabetes from dolphins.

    B. Dolphins can switch into a diabetic-like state overnight.

    C. Humans can suffer the same disease as dolphins.

    D. Dolphins should be fed regularly to avoid diabetes.

    2.The key to applying the finding to curing human diabetes lies in ____________.

    A. producing insulin in a larger amount

    B. developing drugs from healthy dolphins

    C. identifying a similar genetic pathway in human

    D. analysing more blood samples from hungry dolphins

    3.Which of the following statements is TRUE according to the passage?

    A. Scientists have found a similar genetic switch in humans.

    B. More British people will suffer type 2 diabetes due to obesity.

    C. 2.2 million people with type 2 diabetes die in Britain every year.

    D. Dolphins imitate diabetes to avoid a high blood sugar level.

    4.What will happen to dolphins if not fed for a night according to Venn-Watson?

    A. Their metabolism breaks down.

    B. They become resistant to insulin.

    C. Their heart and kidneys are damaged.

    D. They keep high levels of blood sugar.

    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：2014-2015学年吉林长春外国语学校高二下第一次月考英语试卷（解析版） 题型：短文改错

    假定英语课上老师要求同桌之间交换批改作文，请你修改你同桌的以下作文。文中共有10处语言错误，每句中至多有两处。每处错误仅涉及一个单词的增加、删除或修改。

    增加：在缺词处加一个漏字符号(∧)，在下面写出该加的词。

    删除：把多余的词用斜线(＼)划掉。

    修改：在错的词下划一横线，在下面写出改正后的词。

    注意：

    1. 每次错误及其修改均仅限一词

    2. 只允许修改10处，多者（从第11处起）不计分。

    A young man called low-Carbon Brother become a hit on the Internet in 2011. He suggests to living a low-carbon life, which means using less energy in our daily life so that we can help reducing carbon dioxide in the air. For example, she always picks up some waste paper on the street or uses the blank side to write something. While he is watching TV, he always turns up the screen brightness to the minimum and turns off the light. Therefore, he goes to work by bike instead of driving. Some people think what he is doing is just a show. No one can live such a simply life with so many modern invention around us. As far as I am concerned, I am strongly in support his idea and his behavior. Although what he is doing has no huge effect on global warming, but he at least can enjoy a healthy life.

    查看答案和解析>>

    科目：高中英语 来源：2014-2015学年广东汕头南澳中学高一下期中英语试卷（解析版） 题型：单项填空

    _______you come or not is up to you.

    A. What B. If C. Why D. Whether

    查看答案和解析>>

    科目：高中英语 来源：2014-2015学年广东汕头南澳中学高一下期中英语试卷（解析版） 题型：单项填空

    Would any one of you please tell me ______ to the railway station?

    A. how far is it B. how far is

    C. how far it is D. how far

    查看答案和解析>>

    科目：高中英语 来源：2014-2015学年福建武平县第一中学高一实验班下第一次月考英语试卷（解析版） 题型：书面表达

    请以“One Thing I'm Proud of”为题，用英语写一篇100－120个词的短文，记述一件你自己认为得意的事情。要求如下：

    1.记述事情经过；

    2.简要说明你感到得意的原因或从中得到的启示。

    注意：文章的标题已给出(不计词数)。

    One Thing I'm Proud of

    _______________________________________________________________________________

    _______________________________________________________________________________

    _______________________________________________________________________________

    查看答案和解析>>

    科目：高中英语 来源：2014-2015吉林省松原市高一下月考英语试卷（解析版） 题型：短文改错

    短文改错（共10小题，每题1分，满分10分）

    假定英语课上老师要求同桌之间修改作文,请你修改你同桌写的以下作文,文中共有10处语言错误,每句最多有两处.错误涉及一个单词的增加,删除和修改.

    增加:把缺词处加一个漏字符号(∧),并在其下面写出该词.

    删除:把多余的词用斜线(＼)划掉.

    修改:在错的词下划一横线,并在该词下面写出修改后的词.

    注意:1.每处错误极其修改均限一词.

    2.只允许修改10处,多者从第11处不记分.

    Dear Jin Jing,

    Your problem is common one among middle school students．Maybe the following advices can help you．First in all, believe in yourself．Your greatest problem is that you lack self-confidence．The first thing you must do it is to smile at your classmates．One smile speaks loud about your wish to make friends than any words．Your smile will show that you are friendly to him．Next, trying talking with a student who is as shy as you or who share the same interest with you．You can discuss your studies with a classmate and you can also talk about your hobbies．Unless anyone is in trouble, you should be ready to help him or her．Once you have confidence, you can make as many friends as possibly．

    Yours,

    查看答案和解析>>

    科目：高中英语 来源：2014-2015吉林省松原市高一下月考英语试卷（解析版） 题型：阅读理解

    BRITAIN is a popular tourist place. But tours of the country have advantages and disadvantages .

    ADVANTAGES

    Free museums. No charge for good collections of art works.

    Pop music. Britain is the only country to rival(与…匹敌)the US on this point.

    Cabs. London taxi drivers well know where they are going.

    Choice of food. Visitors can find food from every corner of the world .

    Fashion. Not only do fashion junkies love deeply and respect highly brand names such as Vivienne Westwood, Alexander McQueen; street styles are justly loved, too.

    DISADVANTAGES

    Poor service. People can dine out on the rudeness they have experienced,” says Professor Tony Seaton, of Luton University’s International Tourism Research Center.

    Poor public transport. Trains and buses are promised to defeat tourists who have the most patience, so the over- crowded London tube is inexplicably(难以理解的) popular.

    Rain. Still in the number one complaint.

    Overpriced hotels. The only European country with a higher rate of tax on hotel rooms is Denmark.

    Drinking hours. Alcohol(酒) is in short supply after 11 pm even in “24-hour cities”.

    1.What do tourists complain most?

    A. Poor service. B. Poor public transport.

    C. Rain. D. Overpriced hotels.

    2.When is alcohol not able to get?

    A. At 9: 00 pm B. At 10: 00 pm

    C. At 11: 00 pm D. At 12: 00 pm

    3.Which of the following is true according to the passage?

    A. You have to pay to visit the museums.

    B. Only clothing with brand names are sold in London .

    C. You cannot find Chinese food there.

    D. The public transport is poor there.

    查看答案和解析>>

    科目：高中英语 来源：2014-2015学年四川达州大竹县文星中学高三3月月考英语试卷（解析版） 题型：阅读理解

    Let us begin by saying what does not cause our dreams. Our dreams do not come from "another world ". They are not messages from outside sources. They are not a look into the future, either.

    All our dreams have something to do with our feelings, fears, longings, wishes, needs and memories. If a person is hungry, or tired, or cold, his dreams may include a feeling of this kind . If the covers on your body, such as a quilt or a blanket, have slipped off your bed, you may dream that you are sleeping on the ice or snow. The material for the dream you will have tonight is likely to come from the experience you have today.

    So the subject of your dream usually comes from something that has an effect on you while you are sleeping (feeling of cold, discomfort, etc.) and it may also use your past experiences and the wishes and interests you have now. This is why children are likely to dream of fairies, older children of school examinations, hungry people of food, homesick soldiers of their families and prisoners of freedom.

    To show you how this is happening while you are asleep and how your needs and wishes can all be joined together in a dream, here is the story of an experiment. A man was asleep and the back of his hand was rubbed with a piece of absorbed cotton. He would dream he was in hospital and his charming girlfriend was visiting him, sitting on the bed and feeling gently his hands.

    There are some scientists who have made a special study of why we dream, what we dream and what those dreams mean. Their explanations of dreams, though a bit reasonable, are not accepted by everyone, but they offer an interesting approach to the problem. They believe that dreams are mostly expressions of wishes that do not come true. In other words, dreams are a way of having your wishes carried out.

    1.From the passage we know that our dreams .

    A.are imagination of our daily life

    B.are man’s curious look into the future

    C.have nothing to do with our feelings

    D.are to some degree connected with our feelings

    2.Older children often dream of examinations probably because .

    A.they are interested in exams

    B.they are often worried about their studies

    C.they hope for a better life

    D.they show much interest in their studies

    3.According to the writer, the explanations of dreams that some scientists made .

    A.are considered interesting, but unreasonable

    B.give a good answer to the question why we dream

    C.have some value, though not fully convincing

    D.have been proved by the findings of their studies

    4.Which of the following is the best title for this passage?

    A.Why People Dream? B.New Findings about Dreams

    C.Dream Makes Hopes D.What Dreams Mean?

    查看答案和解析>>

    科目：高中英语 来源：2014-2015学年湖南省长沙市高考模拟英语试卷（解析版） 题型：语法填空

    Katharine Meyer Graham was once described 1._____ "the most powerful woman in America." She was not2._____ elected representative or a government official. She owned and published The Washington Post newspaper. Under her leadership, 3.______ became one of the most important newspapers in the country. To our surprise, she had no training in business 4.______ experience in operating a large company. She had no idea about 5._____ to operate a newspaper at first, 6._____ she never lost her confidence. Finally, she was managed to be one of the greatest women 7._____ was capable of leading the business of newspaper publishing.

    Katharine Graham died of head injuries. At her funeral, friends of her said she would be remembered as a woman who had an important influence8.___ events in the United States and the world.

    查看答案和解析>>

    同步练习册答案