练习册

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


    D
    Is a recently discovered hormone the reason why folks who lose weight can’t keep it off?
    Like millions of other fat people, at 530 inches high, more than 300 pounds, Carnie Wilson was not just fat. After trying all sort of diets that didn’t work, she has to go to the stomach – bypass surgery (胃部迂回手术), ie, have most of her stomach sewed up, only leaving tiny room to hold several tablespoonfuls at most. Result: she simply couldn’t eat the way she used to. In three years, Wilson is one third of her former weight.
    Wilson’s experience is not all that unusual, and while doctors still aren’t exactly sure what is going on, a report in last week’s Journal of Medicine offers an explanation. The loss of appetite in bypass patients may be linked to a recently discovered hormone called ghrelin. Not only that, ghrelin may turn out to be one reason we feel hungry and it’s hare for didters to keep weight off.
    Nowadays, researchers are careful to stress only what they know for sure. For the three conclusions, the leading Dr. David of the University of Washington says, “I feel very solid about two of them.” The first is that ghrelin levels in the bloodstream rise significantly before meals and drop afterward. The second conclusion is that ghrelin levels are higher on average in people who have lost weight from dieting.
    Dr. David is less sure of the third conclusion, that bypass patients have only a quarter as much ghrelin as most people of normal weight. After all, ghrelin is produced by cells in the stomach. Years ago, leptin, a hormone was found as an appetite suppressant (食物抑制剂). But after years of trying, it had to be given up.
    What doctors suspect is that both leptin and ghrelin are part of a complex system of brain and body chemicals that govern weight and appetite. That does not mena pharmaceutical (药物的) weight control is forever out of the question. “In the next ten years, we will be able to develop new drugs to help people lose weight healthily and effectively.”
    47．What can we learn about ghrelin according to the passage?
    A．After meals ghrelin levels are higher in the bloodstream.
    B．People who have lost weight have less ghreilin in their body.
    C．Without ghrelin, people are really difficult to lose weight.
    D．Ghrelin is something produced by cells in the stomach.
    48．What is Dr. David not sure?
    A．pharmaceutical weight control is impossible.
           B．There is less ghrelin in the bypass patients.
    C．new drugs will be developed in 10 years.
    D．ghrelin levels are higher in people on diet.
    49．In fact, people’s weight and appetite are controlled by        
    A．ghrelin and leptin                      B．hormone and medicine
    C．brain and body chemicals                  D．stomach and food
    50．What can we infer from the passage?
    A．People with a lower ghrelin level go hungry easily.
    B．Doctors managed to use leption to control the appetite.
    C．Doctors are optimistic about how to lose weight healthily.
    D．The loss of appetite in bypass aptient is linked to leptin


    47—50 DBCC  

    解析

    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： 题型：阅读理解

    Children are our future, and it’s up to us to arm them with the tools to succeed. Sadly, today’s children are being armed with more dangerous tools like weapons （武器）, drugs and gangs. Once a relatively peaceful environment, many schoolyards of today are becoming unsafe for both students and teachers.

    Home schools are available to give you choices. Home schooling provides top-quality education, flexibility, and freedom to create your own schedule. At Heritage Home School we believe the choice should be yours. Thanks in part to modern technology, home schooling information is becoming readily available across our nation. A recent study by the ITBS （Iowa Tests of Basic Skills） and TAP （Tests of Achievement and Proficiency） shows us that students of home schools do particularly well when compared with the nationwide average. In every subject at every grade level, students of home schooling scored obviously higher than those in public and private schools.

    If you’re new to home schooling, you may be asking yourself, “Will home schools really work for my children?”

    Fact: A nationwide study using a random（任意）selection of 1,516 families found students of home schooling to be scoring, on average, at or above the 80th percentile in all areas on standardized achievement test.

    Note: The national average on standardized achievement tests is the 50th percentile. Collectively, the staff at Heritage Home School brings 65 years of experience in home schooling curriculum. We’ve placed students in the top 2 % of the nation in math and many are successfully moving on to college.

    One study found that of the home schooled adults, 0% were unemployed, 0% were on welfare and 94% said home education prepared them to be independent persons. For more home schooling information, call us today toll free at（877）532-7665.

    We can learn from the first paragraph that ________.

    A. many schools armed their students with weapons

    B. violence and crime exist in many schoolyards

    C. students use weapons to defend their schoolyards

    D. weapons are more dangerous than drugs

    All of the following are true of home schools EXCEPT that ________.

    A. students are free to choose their courses

    B. students do well in important national tests

    C. they help students find jobs

    D. they help students to be independent　　

    What is the purpose of the text?

    A. To give information about different schools.

    B. To compare home schools with other schools.

    C. To suggest a new method of school education.

    D. To persuade people to choose home schools.

    The advertisement is mainly aimed at ________.

    A. students   B. parents   C. teachers   D. adults

    查看答案和解析>>

    科目：高中英语 来源：2012-2013学年河南十所名校高三考前仿真测试英语卷（解析版） 题型：阅读理解

     Which comes first, happiness or money? Are richer people happier? And if so, how do people get much richer? A recent study could tell you the answer.

    The study looked into thousands of teenagers and found that those who felt better about life as young adults tended to have higher incomes by the time they turned 29. Those who were happiest earned an average of $8,000 more than those who were the most depressed.

    The researchers, from University College London and the University of Warwick, say that very gloomy teens, no matter how tall or smart they were, earned 10% less than their peers, while the happier ones earned up to 30% more.

    Happier teenagers have an easier time getting through school, college and a job interview, chiefly because they always feel better about life. It may also be true that happier people find it easier to make friends, who are often the key to homework help or networking.

    A report in June suggested that professional respect was more important than dollars in terms of workplace happiness. In August scientists announced that they had found the gene for happiness in women, Alas （the same gene doesn’t appear to have the same effect on men）. And in October researchers in the UK and in the US announced that people who eat seven portions of fruit and vegetables a day report being the happiest.

    The big question is: if it really is true that happier kids end up being wealthier kids, is it necessary for parents to get their kids to do the homework? The fact is that no homework will make kids happy but surely hurt their grades. Studies do show, after all, that more education leads to better-paid jobs, which may give us a deep thought.

    “These findings show that the teenagers’ happiness is important to their future success,” one of the report’s authors writes. “But what is the most important is that we should find a way to help children gain more satisfaction from doing schoolwork.”

    1.What conclusion can the researchers draw from the recent study?

    A. Happy teenagers grow up to be wealthier.

    B. Money can make people become happier.

    C. Wealth has nothing to do with happiness at all.

    D. Schoolwork can help teens achieve success.

    2.The main reason why happier people have more chances to succeed is that ________.

    A. they are easy to communicate with others

    B. they are good at doing their schoolwork

    C. they are hopeful and optimistic about their life

    D. they eat much more fruit and vegetables a day

    3.The underlined word “gloomy” in Paragraph 3 probably means “________”.

    A. upset          B. glorious          C. happy           D. wealthy

    4.What can be the best title for the text?

    A. The way to educate kids.             B. The source of happiness.

    C. How to achieve your goal.            D. The secret of being wealthier.

     

    查看答案和解析>>

    科目：高中英语 来源：2012-2013学年海南省琼海市高三下学期第一次月考英语试卷（解析版） 题型：阅读理解

    Faced with a tough job market, fresh graduates are dreaming of running their own businesses instead．But a recent survey has showed that such ambitions lack the required support and remain just that---dreams．

    The Shanghai Municipal Employment Promotion Center poll of 1,276 graduates in several universities and colleges in the city, released last Friday, showed 59.78 percent of respondents considered the possibility of setting up a company or at least a small store．“But they just stop at the‘thinking’stage,” it stated．

    Respondents put the top reasons for not going it alone down to a shortage of investment and a lack of business opportunity．They also listed lack of business experience and social networks, the need to advanced study and objections from family members as factors that stood in their way．

    More than 90 percent of the interviewees said they would rather take up a job after graduating and then consider starting their own business two or three years down the road．

    Guo Bing, a senior student in Shanghai International Studies University majoring in English, decided he wanted to be his own boss last year．But he is looking for a job first．“If I fail to find a satisfying job, I would like to establish a company in exhibition services,” Guo said．The Shanghai native has some relatives working in a local printing plant．With their help, Guo hopes to produce exhibition brochures(小册子） at a relatively low price．He is also confident that his English language skills can help him do well in the industry．

    “Social networking is an important factor leading to business success,” Guo said．

    Guo said that the shortage of graduate jobs is the main reason driving more university students to set up a business right after their graduation．

    Jiang Ye, deputy director of Yangpu District Business Guide Center, said the universitysets up a business guide team made of government officials and professionals．They

    regularly give training courses to students who show an interest in having their own business．

    The parents of university graduates are more willing to help their children start up alone, the survey showed．"Once you win the support of your family, you have won half the battle," Guo added．

    1.Which of the following can be the best title?

    A．A Tough Job Market                     B．Graduates Dream of Being Boss

    C．The Ambitious Fresh Graduates             D．The Story of Guo Bing

    2.In the view of Guo Bing, what is the key factor that makes fresh graduates dream of being boss soon after graduation?

    A．Their family don't support them．          B．Their social networking is not good．

    C．There are not enough graduate jobs．       D．They want to achieve greater success．

    3.Who is this article mostly intended for?

    A．The parents whose child goes to university soon.

    B．Those who will graduate from university．

    C．Those who want to be bosses．

    D．The officials who work in the government．

     

    查看答案和解析>>

    科目：高中英语 来源：2015届陕西省高一上学期期中考试英语试卷（解析版） 题型：书面表达

    下面的饼状图（pie chart）显示了你对你校学生兴趣爱好的调查结果。请你用英语写一篇短文，报道你的调查结果，并对此结果发表你的看法或建议。字数100词左右。首句已给出（不计入词数）。

     

         A recent survey shows what the students of our school like to do in their spare time.                                                   

                                                                   

     

    查看答案和解析>>

    科目：高中英语 来源：2015届江苏省高一上学期期中考试英语试卷（解析版） 题型：书面表达

    最近的一项调查表明，大约有30%的高中生养成不吃早餐的习惯。请根据表格内容用英语写一篇题为“Top Meal of the Day”的短文刊登在英语学习辅导报上。

    原因：

    1．晚上学习太晚，不吃早餐可多睡一会儿；

    2．家长太忙无暇顾及，给钱让孩子自己解决；

    3．一些女孩子为保持苗条身材而一些男生则为了减肥不吃早餐。

    结果：

    1．课上注意力不能集中；

    2．考试成绩不理想。

    建议：

    1．早餐不可少.它提供全天所需能量的30%，且有助于创造能力的培养；

    2. 自己的建议（至少2点）

    注意：1．短文须包括所有要点，但不要逐字翻译；可以适当增加情节，使内容连贯。

    2．词数: 120 ～150 ；文章的开头已给出，不计入总词数内。

    3．参考词汇： 创造能力  creative abilities

    Top Meal of the Day

    A recent study shows that nearly 30 percent of the high school students do not have breakfast._______________________________________________________________________________________________________________________________________________________

     

    查看答案和解析>>

    同步练习册答案