练习册

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

    B
    　A new study has found no evidence that sunscreen, commonly used to reduce the risk of skin cancer, actually increases the risk.
    　Research from the University of Iowa based their findings on a review of 18 earlier studies that looked at the association between sunscreen use and melanoma (黑素瘤). They said that they found flaws in studies that had reported associations between sunscreen use and higher risk of melanoma.
    　Most health experts believe that by protecting the skin from the harmful effects of the sun, sunscreen helps prevent skin cancer, which is increasing in incidence (发生率) faster than any other cancer in the United States.
    　But questions have been raised about sunscreen and whether it may have the opposite effect by allowing people to remain exposed to the sun longer without burning.
    　The researchers said that among the problems with some earlier studies is that they often failed to take into account that those people most at risk for skin cancer---are more likely to use sunscreen. As a result, it may appear that sunscreen users get cancer more often.
    　The studies, which generally relied on volunteers to recall their sunscreen use, were also unable to prove how well the products had been applied, said the new study.
    60．The underlined word “flaws” in the 2nd paragraph most probably means _________.
    A．evidences         B．facts         C．faults         D．failures
    61．People with fair skin and freckles ________.
    A．seldom use sunscreen　　　　　　         B．are more in danger of skin cancer
    C．can be free from the harm of the sun　　     D．often expose themselves to the sun
    62．We can learn from the passage that _________.
    A．sunscreen users get skin cancer more often
    B．the volunteers have proved the effect of the sunscreen
    C．the new study has based on the experiences of volunteers
    D．the number of skin cancer patients is increasing in America
    63．Which of the following is the best title of the passage?
    A．Sunscreen to Prevent Skin Cancer　      B．Sunscreen to Increase Skin Cancer
    C．Skin Cancer Caused by Sunscreen　      D．Skin Cancer Caused by Freckles

    60--63   CBDA  
    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



    第三部分阅读理解 (满分30分)
    A
    Some scientists say that animals in the ocean are increasingly threatened by noise pollution caused by human beings. It is caused mainly by industrial underwater explosions, ocean drilling, and ship engines.
    Some scientists have proposed setting a noise limit of one hundred and twenty decibels (分贝) in oceans. They have observed that noises at the level can frighten and confuse (使困惑) whales.
    A team of American and Canadian scientists discovered that loud noises could seriously injure some animals. They found that powerful underwater explosions were causing whales in the area to lose their hearing. This seriously affected the whales’ ability to exchange information and find their way. Some of the whales even died.
    Some researchers whose work depends on ocean sounds object to (反对) a limit of one hundred and twenty decibels. They say such a limit would mean an end to important industrial and scientific research. Scientists do not know how much and what kinds of noises are harmful to ocean animals. However, many scientists agree that noise is a greater danger than they believed. They want to prevent noises from harming creatures (生物) in the ocean.
    56. According to the passage, which of the following is increasingly dangerous to sea creatures?
    A. The man-made noises.            
    B. The noises made by themselves.
    C. The sound of earthquakes.         
    D. The sound of ice-breaking.
    57. Concerning the effect of noises on whales, which of the following is TRUE?
    A. They are deaf to noises.           
    B. Noises at a certain level may hurt them.
    C. Noises could kill them.            
    D. Noises will cause them to lose their eyesight.
    58. Some scientists think that the noise limit of one hundred and twenty decibels would _________.
    A. prevent them doing their research work    
    B. benefit them a lot in their research work
    C. do good to their health                 
    D. increase the industrial output
    59. According to the last paragraph, what will scientists most probably do in the future?
    A. They will study the effect of different noises in the sea.
    B. They will work hard to make no noise.
    C. They will never do any scientific research in the sea.
    D. They will protect sea animals from harmful noises.

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解


    C
    Geniuses amaze us, impress us and make us all a little jealous．How do they differ from the average person? Scientists are working hard to figure out that answer．Tune in to the National Geographic Channel to find out about the discoveries they’re making in the series My Brilliant Brain.
    When Marc Yu was only two years old, he began to play the piano．After a year, he started learning pieces by Beethoven．Now he’s a world-famous concert pianist at age eight．He learns newer and more difficult pieces with ease and can identify any note he hears．He seems to be specially designed for music．In Born Genius, National Geographic looks at the science behind child prodigies (神童) to explain why some children seem to be born without limits.
    Genius didn’t come naturally to Tommy McHugh．His came only after he nearly died from bleeding in his brain．After recovering, McHugh’s head was filled with new thoughts and pictures．So, he began to express them in the form of poetry and art．Now, he’s a seemingly unstoppable creative machine．Sufferers of autism and brain injury have shown that great mental ability can sometimes come from damage or disease．Accidental Genius explores this puzzling relationship.
    Can normal people be trained to be geniuses? Susan Polger has shown no signs of extraordinary intelligence．Yet, during her childhood, she studied thousands of chess patterns and learned to recognize them immediately．As a result, she was able to beat skilled adult players by age 10 and can now play up to five games at the same time without even seeing the boards．Make Me a Genius examines what it takes to turn an ordinary brain into that of a genius.
    If becoming a genius were easy, we’d all be one．Yet, there is much more to super intelligence than simply being born lucky．Learn more about amazing brains this month on National Geographic’s My Brilliant Brain.
    51．My Brilliant Brains is most probably from _______.
    A．a website           B．the radio               C．a magazine          D．a newspaper
    52．The author takes Marc Yu as an example to show that a child prodigy is        .
    A．a person who learns something easily
    B．a child who is eager to learn new things
    C．a student who practices an instrument a lot
    D．a kid who works hard to do well in school
    53．Which of the following is NOT true according to the passage?
    A．New things about the brain are still being discovered.
    B．People without natural abilities can learn to do things well.
    C．Some people naturally have more active brains.
    D．People are usually smarter when they recover from brain injury.
    54．From the passage, we know that ___________
    A．scientists completely understand the brain
    B．people can only be born as geniuses
    C．there’s no such thing as a true genius
    D．there are many factors in being a genius
    55．The author develops the passage mainly by ___________.
    A．providing typical examples
    B．following the natural time order
    C．presenting a cause and analyzing its effects
    D．comparing opinions from different scientists

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解

    It doesn't take a rocket scientist long time to figure out that there are better things you could do for your health than take deep breaths on a smoggy（烟雾的）day. A growing pile of research suggests that even relatively low levels of air pollution may be more harmful than previously realized, to both heart and lungs(肺). The latest articles from researchers, published this week in the New England Journal of Medicine, focuses on how particulate (微粒) matter from air pollution affects lung function.
    “The effect of low levels of particulate pollution found in many urban areas is not unlike secondhand smoke,” experts say. Studies show that short-term effects from particulates include diminished（减少） lung function, coughing, wheezing, and heart attacks. Long-term exposure can also slow normal lung growth, damage lung airways, and increase the risk of dying from lung cancer.
    Certain populations, such as the very old and the very young, are the most vulnerable to air pollution. However, even the most alarming studies conducted in the most polluted areas suggest that the average person's individual risk from exposure (暴露) is very slight. Relative risk numbers often seem more frightening than they actually are. For example, an earlier study published in the New England Journal of Medicine found that short-term exposure to traffic fumes tripled ( 成为3倍) the risk of heart attacks in heart-attack survivors.
    Short of moving to the countryside or at least away from busy roads, shielding yourself from the effects of air pollution is not easy. Masks won't work. “At the very least,” suggests Murray Mittleman, a cardiologist at Harvard University, “people who regularly exercise outdoors near highways may want to consider remapping their route.”
    66. What does the underlined sentence in the first paragraph mean?
    A. Rocket scientists are making researches on people’s health.
    B. It's obvious that air pollution has a bad effect on people’s health.
    C. People aren't sure whether taking deep breaths on a smoggy day is bad.
    D. People often have a hard time when taking deep breaths on a smoggy day.
    67. The word "vulnerable" in Paragraph 3 probably means _________.
    A. easy to be hurt            B. easy to be protected
    C. easy to be used            D. easy to be saved
    68. The main idea of Paragraph 3  is _________.
    A. that even small risk from particulate causes big problems
    B. that air pollution often leads to heart attack
    C. who are most likely to get affected
    D. that we shouldn't worry about the average low risk
    69. In order to be healthier, you'd better _________.
    A. take deep breaths         B. wear a mask   
    C. live in a countryside       D. clean the busy road
    70. The passage is written in a(n) _________ tone.
    A. subjective         B. humorous     C. doubtful      D. objective

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解


    B
    A mosquito is an insect that is found all over the world．There are thousands of different kinds of mosquitoes in many different sizes and colors．The female mosquito needs blood from vertebrates （脊椎动物）to lay eggs and produce more mosquitoes．She has a special part of her mouth that she uses to suck blood，and her saliva（spit）thins the blood so she can drink it．In fact．It’s the mosquito’s saliva that makes the bites itch（痒）!
    A person who gets bitten by a mosquito will notice a wheal，which is a bump around the bite．
    The wheal will be round，with pink or red around the edge and white in the middle．The wheal will
    itch a lot．Soon the wheal will disappear, but the itch will stay．
    If you’ve been bitten by a mosquito，wash the bite with soap and water．Put on some calamine lotion to help stop the itching，or an adult can find an anti-itch cream at the drugstore for you．Placing an ice pack on the bite may also help．Tell an adult you’ve been bitten by a mosquito，especially if you live in the eastern United States．But if you develop an allergic reaction and feel dizzy or sick，tell a doctor immediately．He can treat allergic reactions with sole medicine．
    The best way to avoid mosquito bites is to wear an insect repellent．Repellents that include one of these ingredients are best：BEET and lemon eucalyptus．Ask a parent to help you apply them．
    Since mosquitoes lay their eggs in water，it’s also a good idea to empty out buckets，flower pots，toys and other things in your yard that may have collected water during a rainstorm．And when it’s possible，you’d better wear long-sleeved shirts and long pants to keep mosquitoes away from your skin．
    60．What makes you itch after the mosquitoes’bites?
    A．A bump around the bite．          B．The mosquito’s saliva．
    C．Some calamine lotion．             D．An antic-itch cream．
    61．The underlined word“wheal”（Paragraph 2）is closest in meaning to________．
    A．a small mouth that can prevent an insect
    B．a small mark after an insect bite that usually itches
    C．an illness after an insect bite that always spreads nearby   
    D．an illness from mosquitoes’ bites and other pollution diseases
    62．Which of the following is TRUE according to this passage?
    A．There are thousands of mosquitoes in the same sizes and colors．
    B．The wheal will never disappear forever but the itch will disappear soon．
    C．Ask a doctor for some medicine if you develop an allergic reaction for the bite．
    D．Ask a parent for an insect repellent if you see mosquitoes laying their eggs in water．

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解


    D
    The Harvard Student-led Walking Tour
    Let a student show you Harvard …on a free walking tour.
    We welcome our neighbors to stop by the Harvard University Even & Information Centre, located in the Holyoke Centre Arcade at 1350 Massachusetts Avenue in the heart of Harvard Square in Cambridge.
    Let a student take you and your family, school, or organization on an engaging, hour-long free historical tour of the Harvard Campus. The tours leaves form be Events & Information Centre. Not only will you discover the location of fascinating exhibition and  programmers on campus, you will also see Harvard’s rich sampling of American history and architecture from the Colonial period to the present. Schedule of Tours.
    Schedule of Tours
    Tours leave the Events & Information Centre at 10 a. m. and 2 p. m. Monday through Friday, and at 2 p. m. on Saturday through the academic year(February 4 through May 2; September 23 through December 16). Summer tours (June 24 through August 15) are offered at 10 a.m. , 11:15 a.m., 2p.m., and 3:15 p.m. Monday through Saturday. Reser-vacations for special tours of 20 or more people may be made b calling the Events & Information Centre at (617) 495-1583 or emailing icenter@ camail. harvard, edu. Tours are suspended March 23 trough April 2 for Spring Break, May 3 through June 23 for Spring intercession（祷告）,and August 16 through September 22 for Summer intercession.
    NOTE: Prospective（未来的）students may take tours originating at the Harvard Admission Office, located at Byerly Hall on 8 Garden Street in Cambridge. Form April through August, the Admissions staff conducts an information session at 10 a. m. , followed by an 11 a. m. tour. Monday through Friday. On Saturdays, there is no information session but the 11 a. m. tour is still scheduled. Another session is held year-round at 2p. m. with a 3 p.m. tour following. For more information on tours for prospective students, please call at (617)495-1551.
    Harvard University Events & Information Centre.
    Location: Holyoke Centre Arcade. 1350 Massachusetts Avenue, Cambridge MA 02138
    Phone: (617) 495-1537
    53．A person can join in a tour at________on Saturday through the academic year.
    A．10 a. m.   B．2  p. m.   C．11:15 a. m.      D．3:15 p. m.
    54．If you want to go for an information session, you can go on__________.
    A．May 2      B．June 23    C．August 20 D．September1
    55．A student who wants an information session may___________for more information.
    A．call (617) 495-1573                 B．call(617) 495-1551
    C．email iceter@ camail. Harvard, edu          D．go to the Events & Information Centre
    56．The above ad. is mainly intended for________ .
    A．foreign visitors          B．freshmen
    C．high school students    D．those living near Harvard University

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解


    C
    Zanzibar，Tanzania--Hundreds of dead dolphins were washed up on Friday along the shore of a popular tourist place on Tanzania’s northern coast．Scientists have ruled out poisoning．
    It was not immediately clear what killed the 400 dolphins，whose dead bodies lied along a 4-kilometer coast of Nungwi，said Narriman Jidawi，a marine biologist at the Institute of Marine Science in Zanzibar．But the bottleneck dolphins，which live in deep offshore waters，had empty stomachs，meaning they could have got lost and had been swimming for some time to reorient themselves．They did not die of hunger and were not poisoned，Jidawi said．
    In the US，experts were looking into the possibility that sonar(声呐)from the US submarine could have caused a similar incident in Marothon，Florida，where 68 deep-water dolphins stranded(搁浅)themselves in March 2005．
    The deaths are a blow to the tourism industry in Zanzibar，where thousands of visitors go to watch and swim with dolphins．Villagers，fishermen and hotel residents found the dead bodies and told officials．Mussa Aboud，Zanzibar’s director of fisheries，went on state radio to warn the public against eating the dolphins’meat，saying the cause of death had not been found．
    The Indo-Pacific bottlenose，commonly known as dolphins，are the most common species in Zanzibar’s coastal waters，with bottlenose and humpback dolphins often found in mixed-species groups．
    63．According to the passage，the bottleneck dolphins            ．
    A．are often attacked by submarine in deep water
    B．find it hard to find enough food near the coast
    C．often fall ill along the shore of a tourist place
    D．1ike living in the deep waters near the coast
    64．The underlined word“reorient”means           ．
    A．lose their way                   B．find their way
    C．look for food                        D．fight against enemies
    65．What can we infer from the passage?
    A．The dolphins died because of the sonar from US submarines．
    B．The dead dolphins can not be eaten as they are poisonous．
    C．The US experts are researching sonar at present．
    D．The ability of locating is extremely important for dolphins．
    66．What would be the best title for the passage?
    A．400 dolphins died along the coast of Nungwi．
    B．Dolphins are facing increased risk of death．
    C．It’s necessary for us to protect dolphins．
    D．Nungwi is famous for many dolphins there．

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解

    We’ve all heard the saying “Go Green”, but is it important? Can one person really make any difference? These may all be questions you’re asking yourself.
    Our main source of energy, at the moment, is fossil fuels. We’ve been using fossil fuels for decades now, so why stop? You see, fossil fuels are created over time by the earth, and can only be replaced over time by the earth, but we were using them faster than the earth could produce them. On top of stripping(剥夺)the earth of her natural resources, we’re also damaging the atmosphere by burning things like coal, oil, and natural gases. That’s the greenhouse effect, which occurs when the burning of these fossil fuels help trap the sun’s energy inside the earth’s atmosphere, causing the temperature to rise over time.
    With all the people in the world, how could you possibly make a difference? Well, here are a few things to think about.
    How many lights do you use in your house?
    How many miles do you drive to work?
    How many electronics do you use, which you don’t need?
    If you were to stop and think about it, you’re able to make a bigger difference than you might realize.
    So many times you’ll hear people say, “So what? I won’t be around for it when things go bad.” But bad times are coming quicker than you might like to believe. It’ll be you children, or maybe even your grandchildren. With the temperature ever-rising, the polar ice caps are melting and water begins taking over land, so many people will crowd into so little space.
    As you can see, this is no laughing matter. It’s time to take action. Don’t let your children or grandchildren live in a world without hope. One person at a time, we can begin to save this earth.
    60. The passage is mainly to _______.
    A. introduce what “Go Green is”
    B. call on us to “Go Green”
    C. warn us of the danger of burning fossil fuels
    D. introduce the greenhouse effect
    61. According to the author, if we want to “Go Green”, we should _______.
    A. use natural resources             
    B. make the temperature to be lower
    C. stop the greenhouse effect         
    D. try to avoid using fossil fuels
    62. According to the author, some people don’t take “Go Green” seriously because they think ______.
    A. it will cost them a lot             
    B. its harm won’t fall on them
    C. they haven’t grandchildren at all    
    D. it is only a laughing matter
    63. According to the author, which is the right order of the following things happening?
    a. The rise of temperature.
    b. The greenhouse effect.
    c. The reduction of land.
    d. The rising sea level.
    e. The melting polar ice caps.
    f. The using of fossil fuels.
    A. f,b,e,d,a,c      B. b,a,f,d,c,e      C. f,b,a,e,d,c     D. b,a,e,d,c,f

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：阅读理解


    第三部分：阅读理解（共15小题；每小题2分，满分30分）
    阅读下列短文，从每题所给的四个选项（A、B、C和D中，选出最佳选项，并在答题卡上将该项涂黑。
    A
    People with less education suffer fewer stressful days, according to a report in the current issue of the Journal of Health and Social Behavior.
    However, the study also found that when less-educated people did suffer stress it was more severe and had a stronger effect on their health.
    From this, researchers have concluded that the day-to-day factors that cause stress are regular. Where you are in society determines the kinds of problems that you have each day, and how well you will cope with them.
    The research team interviewed a national sample of 1, 031 adults daily for eight days about their stress level and health. People without a high school diploma reported stress on 30 percent of the study days, people with a high school degree reported stress 38 percent of the time, and people with college degrees reported stress 44 percent of the time.
    “Less advantaged people are less healthy on a daily basis and are more likely to have downward turns in their health.” leading researcher, Dr. Joseph Grzywacz of Wake Forest University Baptist Medical Center, said in a prepared statement. “The downward turns in health were connected with daily stressors (紧张刺激物), and the effect of daily stressors on their health is much more damaging for the less advantaged. ”
    “If something happens every day, maybe it’s not seen as a stressor.” Grzywacz says. “Maybe it is just life.”
    56.Stress level is closely related to           .
    A. family size B. social position    C. body weight      D. work experience
    57.Which group reported the biggest number of stressful days?
    A. People without any education.     B. People without high school degrees.
    C. People with high school degrees.     D. People with college degrees.
    58.The less advantaged people are, the greater            .
    A. the effect of stress on their health is B. the effect of education on their health is
    C. the level of their education is      D. the degree of their health concern is
    59.Less-educated people report fewer days of stress possibly because          .
    A. they don’t want to tell truth                 B. they don’t want to face the truth
    C. stress is too common a factor in their life D. heir stress is much greater  

    查看答案和解析>>

    同步练习册答案