2014年职称英语(卫生类)阅读完型短文_C级_字典版小抄

Eye Problems1Our eyes are under a great deal of strain these days as computer work,television viewing,night driving,and even sunshine are making exceptional demands.Sunlight,especially in the summer,is now regarded as one cause of cataracts(白内障).2The thinning of the ozone(臭氧)layer means more short-wave ultraviolet(UV)rays(紫外线)are reaching the earth,and these are the biggest risk factor for clouding the lens of the eye.Ultraviolet rays increase the risk of changes to the cornea(角膜)causing clouded vision and eventually cataracts.The rays can be shielded only by anti-UV lenses. However,our eyes are not sufficiently protected by fashion sunglasses.3"Poor night vision and eye fatigue are noticeably more common,and there has been a big increase in minor eye complaints in the over-40s,"says Dr.Mireille Bonnet,who took part in recent research.She says that the six muscles controlling each eye move more than100,000times a day and thateveryone should learn to exercise their eye muscles and allow them to rest.4It was traditionally thought that near-or far-sightedness were inherited conditions and could not be influenced by environmental factors,but new research is challenging this assumption.5Recent studies suggest that up to80percent of schoolchildren in the United States and western Europe are nearsighted.Years of focusing on close,two-dimensional work causes most children to become at least slightly nearsighted by the age of10,say the researchers.6Problems with night vision,which affect around25 percent of people,are also on the increase because of computer ing computer screens means the eye ate in electromagnetic fields(Iti.111;*)that make work harder It is estimatedthamr;s5t30wino,'or people have eye Conditions. such as difficulty with night visiOn,which It from staring ata screen.23.Paragraph2____B____24.Paragraph3____A____25.Paragraph5____D____26.Paragraph6____E____A.The development of poor night visionB.The greatest threat to the eyesC.The function of sunglassesD.The reason for children’s nearsightednessE.The effects of computer on the eyesF.The ways to reduce eye complaints27.Sunlight in the summer is believed to be one cause of ___B___.28.We can wear anti-UV glasses to protect___D____.29.We used to believe that near-or far-sightedness were inherited from___A___.30.Over25%of people are estimated to have difficulty with night vision due to___E___.A.our parentsB.clouded visionC.eye musclesD.our eyesputer useF.eye move。

2014年职称英语等级考试真题（卫生类C级）第1部分：词汇选项（第1～15题，每题1分，共15分）下面每个句子中均有1个词或者短语划有底横线，请为每处划线部分确定1个意义最为接近的选项。

1. His heart gave a sudden leapwhen he saw her.A. hopeB. jumpC. silenceD. life2. Several windows had been smashed.A. cleanedB. replacedC. brokenD. fixed3. The AIDS conventionwill be held in Glasgow.A. partyB. conferenceC. celebrationD. union4. My principalconcern is to get the job done fast.A. mainB. seriousC. deepD. particular4. The majority of people around here are decent.A. realB. honestC. normalD. wealthy5. I’m sure I’ll be able to amusemyself for a few hours.A. treatB. holdC. entertainD. keep6. Take some spareclothes in case you get wet.A. extraB. fineC. winterD. outdoor7. The new service helped boostpre-tax profits by 10%.A. returnB. realizeC. increaseD. double8. They are trying to identifywhat is wrong with the present system.A. proveB. considerC. discoverD. imagine9. He made a number of rude remarksabout the food.A. signsB. mannersC. noisesD. comments10. Lack of space forbidsfurther treatment of the topic here.A. preventsB. receivesC. deservesD. accepts11. The worst agoniesof the war were now beginning.A.partsB. painsC. aspectsD. results12. His knowledge of French is fair.A. very usefulB. very limitedC. quite goodD. rather special13. The book raised a storm of controversy.A. damageB. voiceC. argumentD. doubt14. Afterwards there was just a feeling of let-down.A. excitementB. angerC. calmD.disappointment15. Some comments are just invitingtrouble.A. keeping out ofB. getting intoC. asking forD. suffering from第2部分：阅读判断（第16～22题，每题1分，共7分）下面的短文后列出了7个句子，请根据短文的内容对每个句子做出判断；如果该句提供的是正确信息，请选择A；如果该句提供的是错误信息，请选择B；如果该句的信息文中没有提及，请选择C。

2014 年职称英语综合类阅读理解50 篇第一篇Telling Tales about People1、This passage …about_ the … and biographies.2、Helen Keller wrote_ an autobiography. _______.3、Auto… because they__ want to … light ______.4、The writer … passage by__ defining it ______.5、Diverse means_ varied or different第二篇Outside -the-classroom Learning Makesa Big Difference1、An…student leaders Will not … in it.2、American…mostly for Building friendship.3、Who is Katie Rowley? She's a senior student.4、What…successful end? Passion.5、The…replaced by Polish.第三篇Shark Attack!1、After …, the shark_ swam away _.2、It…great whites often…escape _3、Which …of paragraph 4? are.4、The word … 4 means_ great whites'_5、What is … paragraph? We now… animals.第四篇Feast on Turkey and Good Wishes at Thanksgiving1、On Halloween, children…as Ghosts.2、When are…eaten? On Thanksgiving.3、Thanksgiving is…for Providing them … lives.4、Many children …because_They can …food.5、The first … in 1620.第五篇The Travels of Ibn Battuta1、What is…about? The adventures…Battuta.2、Which of …line 5? left to go to.3、The Sultan …because Ibn Battuta…Mecca.4、Which of …with? Ibn Battuta…today.5、Why did …home? The Sultan…return.第六篇TV Shows and Long Bus Trips1、According to…trip? Ad..ts on the board.2、What is…passage? To talk …shows.3、The writer…favor no billboards…road.4、The writer…because they both …between.5、The writer… are exciting.第七篇Modern Sun Worshippers1、The writer …that they wish…home.2、In paragraph 2, …climate. to show…terms3、According to…others? Spain.4、The latter…means every year ...country.5、According to…beaches? Rainy weather.第八篇The Changing Middle Class1、The information …with a social …group2、A common…that_ the family is very important3、In the…as_prosperous and optimistic4、The phrase…is_a restatement…idea5、The word collectively means_ as a group第九篇Single-parent Kids Do Best1、With which…agree? Two-parent…children.2、According to…offspring? The young…care.3、What is …paragraph 5? Experiment and result.4、According to…conflict? The …body size.5、According to…by ecological factors.第十篇A Letter from Alan1、Why has…letter? To inform …plans.2、Why is …opinion? Because it …nature.3、What will…jams? A building …Place.4、Alan says…soon have less money5、Which of …made? Say no…place第十一篇The Development of Ballet1、This passage …with the way ballet developed。

A Life with BirdsFor nearly 17 years David Cope has worked as one of the Tower of London's yeoman warders(伦敦塔看守),_better （更…）known to tourists as beefeaters. David, 64, lives in a three-bedroomed flat right at the top（顶部）of the Byward Tower, one of the gatehouses. "From（从）our bedroom we have a marvelous(a.奇妙的，不可思议的) view of Tower Bridge and the Thames, " says David.The Tower of London is famous for（以..而著名）its ravens(n.乌鸦，黑色的鸟), the large black birds which have lived there for over three centuries. David was immediately fascinated(着迷，吸引) by the birds and when he was _offered(提供)__ the post of Raven Master eight years ago he had no _ hesitation （犹豫）_ in accepting it. "The birds have now become my life and I'm always _ aware （意识到）of the fact that I am _ maintaining （保持）_ a tradition. The legend(传奇，传说) says that if the ravens leave the Tower, England will fall to enemies, and it's my job to _ make（确保）sure this doesn't happen!"David devotes（献身于）about four hours a day to the care of the ravens. He has grown to love them and the _ fact（事实）that he lives right next to them is ideal. "I can keep（关注）a close eye on them all the time, and not just when I'm working." At first（起初）, David's wife Mo was not _keen（对..感兴趣）on the idea of life in the Tower, but she too will be sad to leave when he retires next year. "When we look out of our windows, we see history all（所有）around us, and we are taking it in and storing it up for our future memories."A Lucky BreakActor Antonio Banderas is used to breaking bones, and it always seems to happen when he's doing(做) sport. In the film Play It to the Bone he plays（扮演一个…）the part of a middleweight(n.中量级拳击手) boxer alongside Woody Harrelson. During（过程中）the making of the film Harrelson kept （连续）complaining that the fight scenes （场面）weren't very convincing(a.有说服力的，令人信服的), so one day he suggested that he and Banderas should have a fight for real. The Spanish actor wasn't keen（对…热衷）on the idea at first, but he was eventually（最终）persuaded by his co-star to put on his gloves and climb into the boxing ring(拳赛场地). However, when he realized how seriously(认真地) his opponent（对手）was taking it all, he began to regret his decision to fight. And then in the third round, Harrelson hit Banderas so（太…以至于..）hard in the face that he actually broke his nose. His wife, actress Melanie Griffith, was furious(a.暴怒的，强烈的) that he had been playing "silly macho(a.雄壮的，男子气概的) games". "She was right," confesses(v.承认，坦白) Banderas, "and I was a fool to take（冒险）a risk like that in the middle of a movie." He was reminded（提醒）of the time he broke his leg during a football match in his native Malaga. He had always dreamed（梦想）of becoming a soccer star, of performing in front of a big crowd, but doctors told him his playing days were probably over. "That's when I decided to take up（开始）acting; I saw it as another（另外）way of performing, and achieving recognition. What happened to me on that football pitch（场）was, you might say, my first lucky break."A Success StoryAt 19, Ben Way is already a millionaire, and one of a growing number of teenagers who have made(制造) their fortune(财富) through the Internet. What(这) makes Ben's story all the more remarkable(a.卓越的，值得注意的) is that he is dyslexic(a.诵读困难的n.诵读困难者), and was told(告知) by teachers at his junior school that he would never be able to read or write properly(正确地) . "I wanted to prove them wrong(错了) ", says Ben, creator and director of Waysearch, a net search engine which can be used to find goods in online shopping malls.When he was eight, his local authorities(n.权威，权力，当权) provided(提供) him with a PC to help with school work. Although he was unable(不能) to read the manuals, he had a natural ability with the computer, and encouraged(鼓励) by his father, he soon began charging(收费) people $l0 an hour for his knowledge and skills. At the age of 15 he set(创建) up his own computer consultancy(n.咨询公司，顾问工作), Quad Computer, which he ran from his bedroom, and two years later he left school to devote(精力) all his time to business."By this time the company had grown and I needed to take on a couple(一些) of employees to help me", says Ben. "That enabled me to start doing(做) business with bigger companies.” It was his ability to consistently(始终如一的) overcome(克服) difficult challenges that led him to win the Young Entrepreneur(n.企业家，主办者) of the Year award in the same year that he formed Waysearch, and he has recently signed a deal worth(价值)$25 million with a private investment(n.投资，投入) company, which will finance(为…供给资金) his search engine.A Powerful InfluenceThere can be no doubt at all(根本) that the Internet has made a huge difference to our lives. Parents are worried that children spend too much time playing on the Internet, hardly ever（几乎不）doing anything else in their spare time. Naturally, parents are curious（对…好奇）to find out why the Internet is so attractive, and they want to know if it can be harmful（伤害）to their children. Should parents worry if their children are spending that much time staring at （盯着看成）their computers?Obviously, if children are bent over their computers for hours, absorbed（沉迷）in some game, instead of doing their homework, then something is wrong. Parents and children could decide how much use the child should make（利用）of the Internet, and the child should give his or her word（诺言）tha t it won’t interfere(妨碍) withhomework. If the child is not holding（坚持）to this arrangement(安排), the parent can take more drastic(严厉的，极端的) steps（采取措施）dealing with a child's use of the Internet is not much different from negotiating（协商）_ any other sort of bargain about(就(某物)讨价还价) behaviour.Any parent who is seriously（严重）alarmed about a child's behaviour should make an appointment(约定) to discuss（讨论）the matter with a teacher. Spending time in front of the screen does not necessarily（必定）affect a child's performance at school. Even if a child is absolutely（完全地）crazy about using the Internet，he or sheis probably just going（度过）through a phase(阶段，时期), and in a few months there will be somethingelse to worry about!Family HistoryIn an age when technology is developingfaster than ever before, many people are beingattracted（吸引）to the idea of looking backinto the past. One way they can do this is byinvestigating(调查，研究) their own familyhistory. They can try to find（找出）out moreabout where their families came from andwhat they did, This is now a fast-growinghobby, especially in countries with a fairly（相当）short history, like Australia and the United States.It is one（一方面）thing to spend sometime going（探究）through a book on familyhistory and to take the decision（决心）toinvestigate your own family's past. It is quite（的确）another to carry out(完成) the research work successfully. It is easy to set about(开始做(某事)) it in a disorganized(扰乱,瓦解) way and cause（引起）yourself many problems which could have been avoided（避免）with a little forward planning.If your own family stories tell you that you are connected（有关系）with a famous character, whether hero or criminal(罪犯), do not let this idea take over(接管) your research. Just treat（当作）it as an interesting possibility(可能的事). A simple system for （用collecting and storing your information will be adequate(充足的，适当的) to start with; a more complex(错综复杂的) one may only get in your way（道路）. The most important thing, though, is to get（被）started. Who knows what you might（可能）find ?Helen and MartinWith a thoughtful sigh(长叹一声), Helen turned away from the window and walked back to her favourite armchair(扶手椅). Would（将要）her brother never arrive? For a brief moment, she wondered if she really cared that much.Over the years Helen had given up (放弃)_ waiting for Martin to take an interest in her. Her feelings for him had gradually weakened(变淡)_ until now, as she sat waiting for him, she experienced no more than a sister's. curiosity(好奇心) to see what had become(发生…事) of her brother.Almost without warning(预兆) , Martin had lost his job with a busy publishing company after spending the last eight years in New York as a key figure in the US office. Somehow the two of them hadn't bothered(烦扰) to keep in touch and, left alone, Helen had slowly found her confidence(对…有信心) in her ownjudgment growing. Ignoring(不顾) the wishes of her parents, she had left university halfway through(过程中) her course and now, to the astonishment(惊讶;令人惊讶的事物) of the whole family, she was gaining(获得) a fast-growing reputation(名声，名誉;声望) in the pages of respected art magazines and was actually earning enough to live on(靠)from her paintings.Of course, she took(对) no pleasure in Martin's sudden misfortune(不幸;灾祸，灾难), but she couldn't help(忍不住)looking forward to her brother's arrival with quiet(暗暗地) satisfaction(满意，满足) at what shehad achieved.Global WarmingFew people now question the reality of global warming and its effects on the world's climate(n.气候，风气). Many scientists put （把…归咎于）the blame for recent natural disasters on the increase in（在）the world's temperatures and are convinced that, more than ever(任何时候) before, the Earth is at risk(危险) from the forces(暴力) of the wind, rain and sun. According(据说) to them, global warming is making extreme(极端的) weather events, such(例如) as hurricanes(n.飓风，暴风) and droughts(n.干旱，早灾), even more severe(严重) and causing sea levels all around the world to rise(上升) .Environmental groups are putting pressure(压力) on governments to take actionto reduce the amount(数量) of carbon dioxide(n.二氧化碳) which is given off(排放) by factories and power plants, thus attacking(攻击) the problem at its source. They are in favour(赞成) of more money being spent on research into solar(a.太阳的n.太阳能), wind and wave energy devices, which could then replace existing power stations(装置) .Some scientists, however(然而) believe that even if we stopped releasing carbon dioxide and other gases into the atmosphere(n.大气) tomorrow, we would have to wait several(几) hundred years to notice the results. Global warming, it seems, is here to stay(停留).Look on The Bright SideDo you ever wish you were more optimistic(adj.乐观的，乐观主义的), someone who always expected（期望）to be successful? Having someone around who always fears（恐惧）the worst isn’t really a lot of fun（乐趣）. We all know someone who sees a single cloud on a sunny day and says, "It looks like（像）rain. " But if you catch yourself thinking such things,it's important to do something about（对此）it(代前面整句话，指这个状况、情况、事实).You can change your view of life, according（根据）to psychologists(心理学家). It only takes a little effort, and you'll findlife more rewarding(adj.有益的，值得的，有报酬的) as a result（结果）. Optimism，they say，is partly about self-respect and confidence but it's also a more positive way of looking at life and all it has to offer（提供）. Optimists are more likely（很有可能）to start new projects and are generally more prepared to take risks.Upbringing(教养，养育，抚育) is obviously(adv.明显地，显然地) very important in forming your attitude（态度）to the world. Some people are brought up to depend（依赖于）too much on others and grow up(成长) forever blaming(v.责备，归咎于) other people when anything goes（发生）wrong. Most optimists,on the _other（另一方面）hand, have been brought up not to regard（把..看作）failure as the end of the world—they just get on（继续）with their lives.School LunchResearch has shown that over half the children in Britain who take their own lunches to school do not eat properly（正常地）in the middle of the day. In Britain schools have to provide（提供）meals at lunchtime. Children can choose（选择）to bring their own food or have lunch at the school canteen(食堂小卖部) One shocking finding（发现）of this research is that school meals are much healthier than lunches prepared by parents. There are strict standards（标准）for the preparation of school meals, which have to include one portion（比例）of fruit and one of vegetables, as well as meat, a dairy(乳制品的) item and starchy((食物)含有大量淀粉的) food like bread or pasta(意大利面食). Lunchboxes examined（检查）by researchers contained sweet drinks, crisps(炸马铃薯片) and chocolate bars. Children consume（摄取）twice as much sugar(糖) as they should at lunchtime.The research will provide a better understanding （解释）of why the percentage of overweight students in Britain has increased（增长）in the last decade. Unfortunately, the government cannot criticise（批评）parents, but it can remind them of the nutritional（营养的）value of milk, fruit and vegetables. Small changes in their children's diet can affect（影响）their future health. Children can easily develop bad eating habits（习惯）at this age, and parents are the only ones who can prevent（阻止）it.Traffic in Our CitiesThe volume of traffic in many cities in the world today continues to expand. This causes many problems, including serious air pollution, lengthy(a.漫长的，冗长的) delays, and the greater risk of（..的风险）accidents. Clearly, something must be done, but it is often difficult to persuade(说服) people to change their habits and leave their cars at home.One possible approach(方法) is to make it more expensive for people to use their cars by increasing(增加)charges for parking and bringing(收益) in tougher(严格的, 强硬的) fines for(因…而罚(款)) anyone who breaks(打破) the law. In addition, drivers could be required to pay for using particular routes at different times of the day. This system, known(为所熟知) as "road pricing", is already being introduced in a number(一些) of cities, using a special electronic card fixed(固定在..上) to the windscreen(n.汽车挡风玻璃) of the car.Another way of dealing(处理) with the problem is to provide cheap parking on the outskirts(效区) of the city, and strictly control the number of vehicles allowed into the centre. Drivers and their passengers then use a special bus service for the final(最后的) stage of their journey.Of course, the most important thing(..的事) is to provide good public transport. However, to get people to give up(放弃) the comfort of their cars, public transport must be felt to be reliable(a.可靠的，可信赖的), convenient(方便的) and comfortable, with fares(票价) kept(保持) at an acceptable level.Teaching and learningMany teachers believe that the responsibilities(职责) for learning lie with(是…的责任) the student. If a long reading assignment(n.任务，作业) is given, instructors expect students to be familiar with the information（信息）__in the reading even if they do not discuss it in class or take an examination. The idea （理想）_ student is considered to be one who is motivated(v.刺激，激发……的积极性) to learn for the sake of(为了) learning（学习）_, not the one interested only in getting high grades. Sometimes homework is returned with（带…回来）brief written comments but without a grade. Even if a grade is not given, the student is responsible（对…负责）for learning the material assigned. When research is assigned （选定）_ , the professor expects the student to take it actively and to complete it with minimum(最少的)guidance. It is the student's responsibility to find books, magazines, and articles in the library. Professors do not have the time to explain how(如何) a university library works; they expect students particularly (尤其)graduate students to exhaust(v.耗尽，使筋疲力尽;彻底讨论) the reference _ sources(资源) _in the library. Professors will help students who need it, but prefer(更喜欢) that their students should not be too(太)dependent on them. In the United Stats professors have many other duties besides(除…之外) teaching, such as administrative(adj.管理的,行政的) or research work. Therefore, the time that a professor can spend with a student outside of class is limited(有限的). If a student has problems with classroom work , the student should either _ approach(接近)_a professor during office hours or make an appointment(n.约定，约会).TheDiffeencebetweenManandComputer What makes people different from computer programs? What is the missing element(n.元素，成分，要素) that our theories don’t yet account(解释)__ for? The answer is simple: People read newspaper stories for a reason: to learn more about _ what(那些) __ they are interested in. Computers, on the other hand, don't. In fact, computers don't even (甚至)have interests;there is nothing in particular(尤其, 特别) that they are trying to find out when they read. If a computer program（程序）_ is to be a model of story understanding, it should also read for a "purpose".Of course, people have several goals that do not make sense（合理）to attribute to computers. One might read a restaurant guide in （为了）order to satisfy hunger or entertainment(n.娱乐，消遣) goals, or to find （寻找）a good place to go for a business lunch. Computers do not get hungry, andcomputers do not have business lunches.However, these physiological(adj.生理学的,生理的) and social goals give rise （导致）to several intellectual(adj.智力的，聪明的) or cognitive(adj.认知的，认识上的) goals.A goal to satisfy hunger gives rise to(引起, 导致) goals to find information（信息）about the name of a restaurant which serves （供应）the desired type of food, how expensive the restaurant is,the location of the restaurant, etc. These are goals to _ acquire （获取）information or knowledge, what we are calling learning（学习）_ goals. These goals can be held by computers too; a computer might（可能）_ "want" to find outthe location of a restaurant, and read a guide in order to do so in（以…方式）the same way as a person might. While such a goal would not arise（起于）out of hunger in the case of the computer, it might well(很可能) arise out of the "goal" to learn more about restaurants.The First BicycleThe history of the bicycle goes back more than 200 years. In 1791, Count(伯爵) de Sivrac delighted（使...喜悦）onlookers(观众) in a park in Paris as he showed off(炫耀) his two-wheeled invention, a machine called the celeriferé. It was basically an enlarged （扩大）version of a children’s toy which had been in use（在使用中）for many years. Sivrac's "celeriferé" had a wooden frame, made in the shape（形状）of a horse,which was mounted on a wheel at either end．To ride it, you sat on a small seat, just like a modem bicycle,and pushed hard（努力）against the ground（地面）with your legs—there were no pedals(踏板，脚蹬子). It was impossible to steer(驾驶，操纵，控制) a celeriferéand it had no brakes(闸，刹车),but despite these problems the invention very much appealed （吸引）to the fashionable young men of Paris. Soon they were holding（举行）races up and down the streets.Minor injuries（受伤）were common as riders attempted a final burst(爆发，突发，爆炸) of speed（速度）. Controlling the machine was difficult, as the only way to change direction（方向）was to pull up the front of the "celeriferé" and turn（掉转）it round while the front wheel was spinning（自旋）in the air. "Celeriferés" were not popular for long,however,as the combination（组合）of no springs(弹簧), no steering and rough roads(起伏路) made riding them very uncomfortable. Even so,the wooden celeriferéwas the origin（始祖）of the modem bicycle.The Old GateIn the Middle Ages the vast majority ofEuropean cities had walls around them. This was partly for defensive reasons(原因)but another factor was the need to keep out anyone regarded as undesirable, like people with contagious(传染性的，会蔓延的) diseases(疾病). The Old City of London gates were all demolished(拆毁) by the end of the 18th century. The last of London's gates was removed a century ago, but by a stroke(打击) of luck, it was never destroyed.This gate is, in actual(实际的) fact, not called a gate at all; its name is Temple Bar, and it marked the boundary（分界线）between the Old City of London and Westminster. In 1878 the Council of London took the Bar down, numbered the stones and put the gate in storage(存储)because its design was unfashionable(老套) it was expensive to maintain(维修) and it was blocking the traffic.The Temple Bar Trust was set out(建立) in the 1970's with the intention of returning the gate home. The aim of the Trust is the preservation(保存)of the nation's architectural heritage.Transporting the gate will mean physically pulling it down(推倒) , stone by stone, removing and rebuilding it near St Paul's Cathedral(总教堂, 大教堂). Most of the facade of the gate will probably be replaced(替换) , though there is a good chance(机会)_ that the basic structure will be sound. The hardest job(工作) of all, however, will be to recreate the statues(雕像) of themonarchs(君主) that once stood on top of the gate.Working MothersCarefully conducted(v.实施，实行) researches that have followed the children of working mothers have not been able to show any long-term problems, compared with children whose mothers stayed at home. My personal view（观点）is that mothers should be allowed to work if they wish. Whether we like it or not, there are a number（很多）of mothers who just have to work. There are those who have invested(投资) such a big part of their lives in establishing(建立) a career that they cannot afford（负担）to see it lost. Then there are many who must work out of pure economic(经济上的) necessity（有必要）. Many mothers are not cut （适合于）out to be full-time parents. After a few months at home with a much loved infant(婴儿，幼儿), they feel trapped(v.使陷入困境，使受限制) and isolated(使隔离，使孤立).There are a number of options(选项，选择) when it comes（涉及）to choosing childcare. These range from child minders(照顾者) and nannies(保姆) through to(直到) Granny(奶奶) or the kind(好心的) lady across（对面）the street. In reality（在现实状况下）, however,many parents don't have any choice; they have to accept anything they can get. Be prepared! No matter （无论）how good the childcare may be,some children are going to protest(抗议) wildly(激烈的) if they are left. This is a perfectly（完全）normal stage of child development. Babies separate well in the first six months,but soon after that they start to get a crush(依恋, 压烂) on Mum and close family members（成员）. Make sure that in the first week you allow plenty of（大量）time to help your child settle in(安顿下来).All children are different. Some are independent, while others are more attached(依恋于) to their mothers. Remember that if you want to do（做）the best for your children, it's not the quantity(数量) of time you spend with them，it's the quality（质量）that matters.。

Some Sleep Drugs Do More Than Make You SleepThe United States Food and Drug Administration1has ordered companies to place strong new warnings on thirteen drugs that treat sleep disorders.It also ordered the makers of the sleeping pills to provide information for patients explaining how to safely use the drugs.Last Wednesday,the FDA announced that some of these drugs can have unexpected and dangerous effects.These include the risk of life-threatening allergic reactions.They also include rare incidents of strange behavior.These include people cooking food,eating and even driving while asleep.The patients later had no memory of doing these activities while asleep.Last year,a member of the United States Congress2said he had a sleep-driving incident.Patrick Kennedy,a representative from Rhode Island3，crashed his car into a security barrier near the building where lawmakers meet.The accident happened in the middle of the night and no one was hurt. Mr.Kennedy said he had earlier taken a sleep medicine.He saidhe was also being treated with a stomach sickness drug that could cause sleepiness.The FDA did not say in its announcement how many cases of sleep-driving it had documented.However,the New York Times4 reported last year about people who said they had strange sleep events after taking the drug Ambien.Some reported sleep-driving and sleep-walking.Others said they found evidence after waking in the morning that they had cooked food or eaten in their sleep.But they had no memory of carrying out the activities.An FDA official says that these serious side effects of sleep disorder drugs appear to be rare.But,he also says there are probably more cases than are reported.5He says the agency believes the risk of such behaviors could be reduced if people take the drugs as directed and do not drink alcohol while taking the drugs.The Food and Drug Administration has advised drug companies to carry out studies to investigate the problem.41The FDA ancounced thatA thirteen drug companies were closed last WendnesdayB only thirteen drugs could treat sleeping discordersC some sleep drugs could lead to serious side effectsD some makers of sleeping pills provided false information to their patients42The FDA warned that some sleeping pillsA can help people to learn to cookB prevent people from driving while asleepC present lifethreatening risk to patientsD have severe effect on a patient's long-term memory43What happened to Patrick Kennedy last year？A He crashed his car into a security barrierB He was killed during a car accidentC His car broke down on the way homeD He was treated for stomachache44After taking the drug Ambien，some peopA are unable to driveB don't know how to cookC suffer from eating problemsD fall asleep while walking45The risk of strange behaviors resulting from taking sleeping pills could be reduced itA the FDA takes more strict regulationsB drug companies listen to patients'adviceC the New York Times releases more reportsD peopl don't drink alcohol while taking these pills 答案：CDADD。

职称英语阅读理解译文---卫生类C级1纳米保健技术走向贫困国家纳米技术的应用对象都是分子级和原子级的物质。

如今，长度为一纳米，即十亿分之一米的粒子已被开发出多种用途，如制造美容产品和抗污型服装等。

但其中一个领域科学家认为潜力尤为巨大，那就是医药领域。

在上周于华盛顿Woodrow Wilson国际中心召开的一个项目会议上，科学家们探讨了如何将纳米技术应用于贫困国家人口保健的事宜。

来自多伦多大学的Peter Singer声称一项名为量子点的纳米技术可被应用于疟疾的诊断。

相对于传统的仅用显微镜观察血液样本的方法，此技术要先进得多。

由于贫困国家往往没有条件应用此项新技术，许多健康人被误诊为疟疾患者，而药物的滥用又导致了抗药性的产生。

所谓量子点是指一些被激活后会发光的粒子，如今科学家正在研究为它们编程的方法，以便当靶分子存在的时候就能够通过发光来诊断疾病。

纳米技术的优越性不光体现在疾病的诊断，还包括疾病的治疗。

国立卫生研究所的Piotr Grodzinski与大家共同探讨了如何运用纳米技术来增强药效。

以一些已经使用了纳米技术的抗癌药物为例，他指出，如果药物可以针对癌症病灶而不是整个人体，治疗所需药量就会大大减少，副作用也会降低。

Andrew Maynard是Woodrow Wilson中心新兴的纳米技术工程部骨干科学家，他注意到巴西、印度、中国及南非正在开发可被贫困国家所应用的纳米技术。

与此同时他指出，与较大分子不同，纳米材料的颗粒在人体内和体外环境中的作用可能有所不同，因此纳米技术的应用存在一定风险，若要深入研究这些风险则需要更大的资金投入。

2医学杂志医学杂志是向医生和其他卫生专业人员提供医学信息的出版物。

在过去，这些杂志只有印刷版。

随着电子出版的发展，许多医学杂志现在都有网站了，有些杂志只有网络版。

少数的医学杂志，如《美国医学协会杂志》，被看作是普通医学杂志，因为他们涵盖了医学的许多领域。

大部分医学杂志都是针对特定医疗领域的专业杂志。

Do You Have a Sense of Humor？Humor and laughter are good for us.There is increasing evidence that they can heal us physically，mentally，emotionally，and spiritually.In fact，every system of the body responds to laughter in some positive，healing way.So how can we get more laughter into our lives？（46）Psychologist and author，Steve Wlison，has some answers.Many peoplebelieve that we are born with a sense of humor.They think，“either you've got it，or you don't”Dr.Wilson points out that this false.（47）The parts of brain and central nervous system that control laughing and smiling are mature at birth（48）（After all，when a baby laughs，we don't rush over and say，“That kid has a great sense of humor！”）A sense of humor is something that you can develop over a lifetime.Sometimes people think that they don't have a good sense of humor because they are not good joke tellers.Dr.Wilson reminds us that telling jokes is only one of many ways to expresshumor.（49）Then we will make others laugh，too.A person who has a true sense of humor is willing and able to see the funny side of everyday life.One of the best definition of a sense of humor is“the ability to see the nonserious element in a situation.”Consider this sign from a sore window.“Any faulty merchandise will be cheerfully replanced with merchandise of equal quality.”The store manager probably placed the sign in the window to impress customers with the store's excellent service.（50）As Dr.Wilson says，“a good sense of humor means that you don't have to be funny；you just have to see what's funny.”A He advises us to lose our inhibitions（抑制）and try to laugh at ourselves.B Is it possible to develop a sense of humor？C However，that does not mean that infants have a sense of humor.D What is true，however，it that we are born with the capacityto laugh and smileE Everyone experiences this emotionF He had a serious purpose，but if you have a sense of humor，you will probably find the sign funny！答案：BDCAF。

1Better Control of TB Seen If a Faster Cure Is Found The World Health Organization1estimates that about one-third of all people are infected with bacteria that cause tuberculosis . Most times, the infection remains inactive. But each year about eight million people develop active cases of TB, usually in their lungs.Two million people die of of it. The disease has increased with the spread of AIDS and drug-resistant forms of tuberculosis.Current treatments take at least six months. People have to take a combination of several antibiotic drugs daily. But many people stop as soon as they feel better. Doing that can lead to an infection that resists treatment. Public health experts agree that a faster-acting cure for tuberculosis would be more effective. Now a study estimates just how effective it might be. A professor of international health at Harvard University2led the study. Joshua Salomon says a shorter treatment program would likely mean not just more patients cured. It would also mean fewer infectious patients who can pass on their infection to others.The researchers developed a mathematical model to examine the effects of a two-month treatment plan. They tested the model with current TB conditions in Southeast Asia. The scientists found that a two-month treatment could prevent about twenty percent of new cases. And it might prevent about twenty-five percent of TB deaths. The model shows that these reductions would take place between two thousand twelve and two thousand thirty. That is, if a faster cure is developed and in wide use by two thousand twelve.The World Health Organization reductions the DOTS3 program in nineteen ninety. DOTS is Directly Observed Treatment, Short-course. Health workers watch tuberculosis patients take their daily pills to make sure they continue treatment.Earlier this year, an international partnership of organizations announced a plan to expand the DOTS program. The ten-year plan also aims to finance research into new TB drugs. The four most common drugs used now are more than forty years old. The Global Alliance for TB Drug Development4says its long-term goal is a treatment that could work in as few as ten doses.2 A Biological ClockEvery living thing has what sicentists call a biological clock that controls behavior. The biological clock tells plants when to form flowers and when the folwers should open, It tells insects when to leave the protective cocoons and fly away, and it tells animals and human beings when to eat, skeep and wake.Events outside the plant and animal affect the actions of some biological clocks. Scientists recently found, for example,that a tiny animal changes the color of its fur because of the number of hours of daylight, In the short days of winter, its fur becomes white,The fur becomes gray brown in color in the longer hours of daylight in summer.Inner signals control other biological clocks. German scientists found that some kind of internal clock seems to order birds to begin their long migration flight twice each year. Birds prevented from flyin become restless when it is time for the trip, but they become calm again when the time of the flight has ended.Scientists say they are beginning to learn which parts of the brain contain biological clocks.An American researcher,Martin Moorhead,said a small group of cells near the front of the brain seems to control the timing of some of our actions, These cells tell a oerson when to awaken,when to sleep and when to seek food, Scientists say there probably are other biological clock cells that control other body activities.Dr.Moorhead is studying how our biological clocks affect the way we do our work. For example, most of us have great difficulty if we must often change to different work hours.It Can take many days for a human body to accept the major change in work hours Dr.Moorhead said industrial officials should have a better understanding of biological clocks and how they affect workers ,He said such understanding could cut sickness and accidents at work and would help increase a factory`s production.3 One Good Reason to Let Smallpox LiveIt’s now a fair bet that we will never see the total extinction of the smallpox virus. The idea was to cap the glorious achievement of 1980, when smallpox was eradicated in the wild, by destroying the killer virus in the last two labs that are supposed to have it—one in the US and one in Russia. If smallpox had truly gone from the planet, what point was there in keeping these reserves?in reality, of course, it was naive to imagine that everyone would let go of such a potential weapon. Undoubtedly several nations still have a few much vials. And the last “official”stocks of lice virus bred mistrust of the US and Russia, for no obvious gain.Now American researchers have found an animal model of the human disease, opening the way for tests on new treatments and vaccines. So one again there’s a good reason to keep the virus—just in case the disease puts in a reappearance.How do we_deal with the mistrust of the US and Russia? Simple Keep the virus under international auspices in a well-guarded UN laboratory that’s open to all countries. The US will object, of course, just as it rejects a multilateral approach to just about everything. But it doesn’t mean the idea is wrong. If the virus is useful, then let’s make it the servant of all humanity—not just a part of it.4 Diet, Alcohol Linked to Nearly One Third of CancersDiet is second only to tobacco as a leading cause of cancer and, along with alcohol, is responsible for nearly one third of cases of the disease in developed countries, a leading researcher said on Tuesday.Dr. Tim Key, of the University of Oxford, told a cancer conference that scientists are still discovering how certain foods contribute to cancer,but they know that diet, alcohol and obesity . play a major role.“Five percent of cancers could be avoided ifnobody was obese,” he said.While tobacco is blinked to about 30 percent of cancer cases, diet is involved in an estimated 25 percent and alcohol in about six percent.Obesity raises the risk of breast, womb, bowel and kidney cancer, while alcohol is known to cause cancers of the mouth, throat and liver, Its dangerous impact is increased when combined with smoking.Key told the meeting of the charity Cancer Research UK that other elements of diet linked to cancer are still unknown but scientists are hoping that the EPIC study, which is comparing the diets of 500,000 people in 10 countries and their risk of cancer, will provide some answers .Early results of the study have revealed that Norway, Sweden and Denmark have the lowest consumption of fruit and vegetables among European countries while Italy and Spain have the highest. Eating at least five portions of fruit and vegetables a day is recommended to reduce the risk of cancer.Key, principal scientist on the EPIC study, said it is looking at dietary links to some of the most common cancers including colorectal, breast and prostate.5 Men Too May Suffer from Domestic ViolenceNearly three in 10 men have experienced violence at the hands of an intimate partner during their lifetimes, according to one of the few studies to look at domestic violence and health among men."Many men actually do experience domestic violence, although we don't hear about it often," Dr. Robert J. Reid of the University of Washington in Seattle, one of the study's authors, told Reuters Health. "They often don't tell __ and__ we don't ask. We want to get the message out to men who do experience domestic violence that they are not alone and there are resources available to them "The researchers asked study participants about physical abuse and non-physical abuse , such as threats that made them fear for their safety, controlling behavior (for example, being told who they could associate with and where they could go), and constant name-calling.Among men 18 to 54 years old, 14.2 percent said they had experienced intimate partner __violence in thepast five years, while 6. 1 percent reported domestic violence in the previous year.Rates were lower for men 55 and older,with 5.3 percent reporting violence in the past five years and 2.4 percent having experienced it in the past 12 months.Overall, 30.5 percent of men younger than 55 and 26.5 percent of older men said they had been victims of domestic violence at some point in their lives. About half of the violence the men experienced was physical.However, the physical violence men reported wasn't as harsh as that suffered by women in a previous study; 20 percent to 40 percent of the men rated it as severe, compared to 61 percent of womenMen who reported experiencing domestic violence had more emotional and mental health problems than those who had not, especially older men, the researchers found.*6 Once-daily Pill Could Simplify HIV TreatmentBristol-Myers Myers Squibb and Gilead Sciences have combined many HIV drugs into a single pill Sometimes the best medicine is more than one kind of medicine. Malaria, tuberculosis and HIV/AIDS,2for example, are all treated with combinations of drugs. But that can mean a lot of pills to take. It would be simpler if drug companies combined all the medicines into a single pill, taken just once a day.Now, two companies say they have done that for people just starting treatment for HIV, the virus that causes AIDS. The companies are Bristol-Myers Squibb and Gilead Sciences. They have developed a single pill that combines three drugs currently on the market.3Bristol-Myers Squibb sells one of them under the name of Sustiva.4Gilead combined the others, Emtriva and Viread, into a single pill in two thousand four.Combining drugs involves more than technical issues. It also involves issues of competition if the drugs are made by different companies. The new once-daily pill is the result of what is described as the first joint venture agreement of its kind in the treatment of HIVIn January the New England Journal of Medicine5 published a study of the new pill. Researchers compared its effectiveness to6that of the widely used combination of Sustiva and Combivir. Combivir contains two drugs, AZT7 and 3TC.8The researchers say that after one year of treatment, the new pill suppressed HIV levels in more patients and with fewer side effects.9Gilead paid for the study. Professor Joel Gallant at the Johns Hopkins School of Medicine in Baltimore, Maryland, led the research. He is a paid adviser to Gilead and Bristol-Meyers Squibb as well as the maker of Combivir, GlaxoSmithKline.Glaxo Smith Kline reacted to the findings by saying that a single study is of limited value. It says theeffectiveness of Combivir has been shown in each of more than fifty studies.The price of the new once-daily pill has not been announced. But Gilead and Bristol-Myers Squibb say they will provide it at reduced cost to developing countries. They plan in the next few months to ask the United States Food and Drug Administration10 to approve the new pill.There are limits to who could take it because of the different drugs it contains. For example, pregnant women are told not to take Sustiva because of the risk of birth disorders.11 Experts say more than forty million people around the world are living with HIV*7 ExerciseWhether or not exercise adds to the length of life, it is common experience that a certain amount of regular exercise improves the health and contributes a feeling of well-being. Furthermore, exerise which involves play and recreation, and relieves nervous tension and mental fatigue in so doing, is not only pleasant but beneficial.How much and what kind of exercise one should take merits careful consideration.The growing child and the normal young man and young woman thrill with the exhilaration of strenuous sports. They fatigue to the point of exhaustion but recover promptly with a period of rest. But not so with those _of middle age and beyond. For them moderation is of vital importance. Just how much exercise a person of a given age can safely take is question hard _to answer. Individual variability is too great to permit of generalization. A game of tennis may be perfectly safe for one person of forty but folly for another. The sage limit for exercise depends on the condition of the heart, the condition of the muscles, the type of exercise, and the regularity with which it is taken. Two general suggestions, however, will serve as sound advice for anyone. The first is that the condition of the heart and general health should be determined periodically by careful, thorough physical examinations. The other is that exercise should be kept below the point of physical exhaustion.What type of exercise one should choose _depens upon one’s physical condition. Young people can safely enjoy vigorous competitive sports, but most older persons do better to limit themselves to less strenuous activities. Walking, swimming, skating are among the sports that one can enjoy and safely participate in throughout life. Regularity is important if one is to get the most enjoyment and benefit out of exercise.*8 Old And ActiveIt is well—known that life expectancy is longer in Japan than in most other countries. A recent report also shows that Japan has the longest health expectancy in the world．A healthy long life is the result of improvement in social environment.Scientists are trying to work out exactly what keeps elderly Japanese people so healthy, and whether there is a lesson to be learnt from their lifestyles for the rest of us. Should we make any changes to our eating habits, for instance, or go jogging each day before breakfast? Is there some secret ingredient in the Japanese diet that is particularly beneficial to the human body?Another factor contributing to the rapid population aging in Japan is a decline in birthrate．Although longer life should be celebrated, it is actually considered a social problem．The number of older people had doubled in the last half century and that has increased pension and medical costs．The country could soon be facing an economic problem, if there are so many old people to be looked after and relatively few younger people working and paying taxes to support them．Raising the retirement age from 65 to 70 could be one solution to the problem. Work can give the elderly a sense of responsibility and mission in life. It’s important that the elderly play active roles in the society and live in harmony with all generations.*9 The Case of Disappesr Fingerprinttics(新增) One usefui anti-cancer durg can effectively erase the whorls and other characteristic marks thatGive people their distinctive fingerprints.Losing them could become troublesome.A case released online in a letter by Annals of Oncology indicates how big a problem of losing fingerprints is.Eng-Huat Tan,a Singapore-based medical doctor describes a 62-year old man who has used capecitabine’ to treat his nasophaeyngeal cancer.After three yeas on the drug,the patient decided to visit U.S.relatives last Decmber. But he was stopped by U.S.customs officials for4 hours after entering the country when those officials coulden’t get fingerprints from the man. There were no distinctive swirly marks appearing from his index finger.U.S. customs has been fingerprinting incoming foreign visitors for years,Tan says.Their index fingers are printed and screened against digital files of the fingerprints of bad guys—terrorists and potential criminals that our federal guardians have been tasked with keeping out of the country, Unfortunately, for the Singaporean traveler,one potential side effect of his drug treatment is a smoothing of the tissue on the finger pads,Hence ,no fingerprints.“It is uncertain when fingerprint loss will begin to take place in patients who are taking capecitabine,”Tan points out. So he cautions any physicians who prescribe the durg to provide their patients with a doctor`s note pointing out that their medicine may cause fingerprints to disappear.Eventually,the Singaoute traveler made it into the United States I guess the name on his passport didn`t taise any res flags. But he`s also now got the explanatory doctory dostor`s note—and won`t leaue home without it.By the way, maybe the Food and Drug Administration,which approved use of the drug 11 years ago, should consider updating its list of side effects associated with this medicine, The current list does note that patients may experience vomiting, stomach pain and some other side effects, But no where does it mention the potential for loss of fingerprints.*10 Hospital MistreatmentAccording to a study, most medical interns report experiencing mistreatment, including humiliation by senior doctors, being threatened, or physical abuse in their first year out of medical school.The findings come from analysis of the responses to a 13-page survey mailed in January 1991 to 1, 733 second-year residents. The survey and analysis appear in the April 15th issue of the Journal of the American Medical Association.Overall, out of the 1,277 residents who completed surveys, 1,185 said that they had experienced at least one incident of mistreatment in their intern year. In addition to reporting incidents where they were abused, more than 45% of the residents said they had witnessed at least one incident where other persons had made false medical records. Moreover, nearly three quarters of the residents said they had witnessed mistreatment of patients by other residents, attending physicians, or nurses. Almost 40% said patient mistreatment was a frequent event.More than 10% of the residents said they were not allowed to have enough sleep, and the average number of hours without_ sleep was 37.6. The average on-call hours during a _typical week was 56.9 hours, but about 25% of the residents said their on-call assignments were more than 80 hours some weeks. Although30% of the residents said they experienced some type of sexual harassment or discrimination, verbal abuse was the most common probleing Fingerprintsm cited. When abusive incidents were limited to events occurring three or more times, 53% of the respondents reported that they were belittled or humiliated by more senior residents, while just over 21% reported someone taking credit for their work. Being “given tasks for punishment,”“being pushed, kicked or hit,”and having someone “threatening your reputation or career,”were reported as a more frequent occurrence by over 10% of the responding residents.+11 Migrant WorkersIn the past twenty years, there has been an increasing tendency for workers to move from one country to another. While some newly independent countries have understandably restricted most jobs to local people, others have attracted and welcomed migrant workers. This is particularly the case in the Middle East,1where increased oil incomes have enabled many countries to call in outsiders to improve local facilities. Thus the Middle East has attractedoil-workers from the USA and Europe. It has brought in construction workers and technicians from many countries, including South Korea and Japan.In view of the difficult living and working conditions in the Middle East, 2 it is not surprising that the pay is high to attract suitable workers. Many engineers and technicians can earn at least twice as much money in the Middle East as they can in their own country, and this is a major attraction. An allied benefit is the low taxation or complete lack of it. 3 This increases the net amount of pay received by visiting workers and is very popular with them.Sometimes a disadvantage has a compensating advantage. For example, the difficult living conditions often lead to increased friendship when workers have to depend on each other for safety and comfort. In a similar way, many migrant workers can save large sums of money partly because of the lack of entertainment facilities. The work is often complex and full of problems but this merely presents greater challenge to engineers who prefer to find solutions to problems rather than do routine work in their home country.One major problem which affects migrant workers in the Middle East is that their jobs are temporary ones. They are nearly always on contract, so it is not easy for them to plan ahead with great confidence. This is to be expected since no country welcomes a large number of foreign workers as permanent residents. In any case, migrant workers accept this disadvantage, along with others, because of the considerable financial benefits which they receive.+12 DreamsEveryone can dream．Indeed, everyone does dream．Those who claim that they never dream at all actually dream just as frequently as the rest of us, though they may not remember anything about it．Even those of us who are perfectly aware of dreaming night after night very seldom remember those dreams in great detail but merely retain an untidy mixture of seemingly unrelated impressions. Dreams are not simply visual-we dream with all our sense , so that we appear to experience sound, touch, smell, and taste．One of the world's oldest known written documents is the Egyptian Book of Dreams．This volume is about five thousand years old, so you can see that dreams were believed to have a special significance even then．Many ancient civilizations believed that you should never ask a sleeping person as, during sleep, the soul had left the body and might not be able to return in time if the sleeper were suddenly awoken .From ancient times to the present day,people have been making attempts to interpret dreams and to explain their significance．There are many books availableon the subject of dream interpretation．although unfortunately there are almost as many meanings for a particular dream as there are books．+13 Scientists Develop Ways of Detecting Heart AttackGerman researchers have come up with a new generation of defibrillators and early-warning software aimed at offering heart patients greater protection from sudden death from cardiac arrest.In Germany alone around 100,000 people die annually as a result of cardiac arrest and many of these cases are caused by disruption to the heart’s rhythm. Those most at risk are patients who have already suffered a heart attack, and for years the use of defibrillators has proved useful in diagnosing life-threatening disruption to heart rnythms and correcting them automatically by intervening within seconds. These devices take on a range of functions, such as that of pacemaker.Heart specialists at Freiburg’s University Clinic have now achieved a breakthrough with an implanted defibrillator capable of generating a six-channel electrocardiogram (ECG) within the body. This integrated system allows early diagnosis of acute blood-flow problems and a pending heart attack. It will be implanted in patients for the first time this year. Meanwhile, researchers at the Fraunhofer Institute for Applied Mathematics in Kaiserslautern have developed new computer software that renders of ECG data more precise.The overwhelming majority of patients at risk will not have an implanted defibrillator and must for this reason undergo regular ECGs. “Many of the current programs only get into account a linear correlation of the data. We are, however, making use in a non-linear process that reveals the chaotic patterns of heart beats as an open and complex system,” Hagen Knaf says, “In this way changes in the heart beats over time can be monitored and individual variations in patients taken into account.” An old study of ECG data, based upon600 patients who had suffered a subsequent heart attack, enabled the researchers to compare risks and to show that the new software evaluates the data considerably better.+14 Young Adults Who Exercise Get Higher IQ Scores(新增)Young adults who are fit have a higher IQ`and are more likely to go on to university, reveals a major new study carried out at the Sahlgrenska Academy and Sahlgrenska University Hopital.The results were recently published in the Proceedings of the National Academy of Sciences(PNAS).The study involved 1.2 million Swedish men doing military service who were born between 1950 and 1976. The research groupanalysed the results of both physical and IQ tests the youngsters took right after they started serving the army.The study shows a clear link between good physical fitness and better results for the IQ test.The strongest links are for logical thinking and verbal comprehension,But it is only fitness that plays a role in the results for the IQ test,and not strength,”Being fit means that you also have good heart and lung capacity and that your brain gets plenty of oxygen,”says Michael Nilsson, professor at the Sahlgrenska Academy and chief physician at the Sahogrenska University Hospital.”This may be one of the reasons why we can see a clear link with fitness, but not with muscular strength .We are also seeing that there are growth factors that are important.”By analysing data for twins,the researchers have been able to determine that it is primarily environmental facors and not genes that explain the link between fitness and a higher IQ.“We have also shown that those youngsters who improve their physical fitness between the ages of 15 and 18 increase their cognitive performance,”says Maria Aberg, researcher at the Sahlgrenska Academy and physician at Aby health centre.”This being the case, physical education is a subject that has an important place in schools,and is an absolute must if we want to do well in maths and other theoretical subjects.”The researchers have also compared the results from fitness tests during national service with the socio-economic status of the men latter in life,Those who were fit at 18 were more likely to go into higher education,and many secured more qualified jobs.+15Life Expectancy in the Last Hundred YearsA hundred years ago，life expectancy in developed countries was about 47: in the early 21st century, men in the United States and the United Kingdom can expect to live to about 74. Women to about 80, and these ages are rising all the time. What has brought about these changes? When we look at the life span of people l00 years ago, we need to look at the greatest killers of the time. In the early 20th century, these were the acute and often high infectious diseases such as smallpox. Many children died very young from these diseases and others, and the weak and elderly were always at risk.In the developed world these diseases are far lessdeadly today,90 and in some cases have almost disappeared. A number of factor shave led to this: improvements in sanitation and hygiene, the discovery and use of antibiotics, which make bacterial diseases much less dangerous, and vaccinations against common diseases. In addition, people's general health has improved with improvements in our general environment: cleaner air, better means of preserving food，better and warmer housing，and better understanding of nutrition.Genetically，we should all be able to live to about 85 but while people do live longer today, there are still some big killers around that are preventing US from consistently reaching that age. The problems that affect people today are the more chronic illnesses, such as heart disease and strokes, and those spread by viruses, such as influenza and AIDS l. Of course, cancer is a huge killer as well. In most cases these diseases affect older people, but there are worrying trends in the developed world with problems such as obesity leadingto more heart disease and illnesses such as diabetes at younger ages.The killers today can be classed as "lifestyle diseases"，which means that it may be possible to halt their progress.。

阅读理解(1) Bringing Nanotechnology to Health Care for the poorNanotechnology uses matter at the level of molecules and atoms. Researchers are finding different uses for particles with a length of one nanometer, or one-billionth of a meter. These include things like beauty products1 and dirt-resistant clothing. But one area where many experts believe nanotechnology holds great promise is medicine.Last week, speakers at a program in Washington discussed using nanotechnology to improve health care in developing countries. The program took place at the Woodrow Wilson International Center for Scholars. Peter Singer at the University of Toronto says a nanotechnology called quantum dots2 could be used to confirm cases of malaria. He says it could offer a better way than the traditional process of looking at a person’s blood under a microscope.In poor countries, this process is often not followed. As a result, sick people may get treated for malaria even if they do not have it. Such misuse of medicines can lead to drug resistance. Quantum dots are particles that give off3 light when activated. Researchers are studying ways to program them to identify diseases by lighting up in the presence of targeted molecule. 4Experts say nanotechnology shows promise not just for diagnosing diseases, but also for treating them. Piotr Grodzinski of the National Institutes of Health5 talked about how nanotechnology could make drugs more effective. He talked about cancer drugs already developed with nanotechnology. He says if a drug can target a cancer locally in the body, then much less of it might be needed, and that means lower side effects.6Andrew Maynard is chief scientist for the Project on Emerging Nanotechnologies at the Woodrow Wilson Center. He noted that Brazil, India, China and South Africa are currently doing nanotechnology research that could help poor countries. But he also noted that there is some risk in using nano-materials. He says nanometer-sized particles behave differently in the body and the environment compared to larger particles7. Experts say more investment in research is needed to better understand these risks.练习：1. Which of the following uses of nanotechnology is NOT mentioned in the passage?A. To make beauty products and dirt-resistant clothing.B. To produce better and lighter building materials.C. To help more accurately diagnose diseases.D. To help more effectively treat diseases.2. How can quantum dots be used to confirm diseases?A. By traditionally looking at a person’s blood under a microscope.B. By letting a person take some kind of medicine.C. By lighting up in the presence of a targeted molecule.D. By subjecting a person to an X-ray examination.3. How can nanotechnology be used to make a drug more effective?A. By making a drug target the focus of a disease.B. By changing the structure of the body cells.C. By lowering the side effects caused by a drug.D. By letting a patient take a dose as large as possible.阅读理解文章及练习(2) Medical Journals医学杂志Medical journals are publications that report medical information to physicians and other health professionals.In the past, these journals were available only in print. With the development of electronic publishing. many medical journals now have Web sites on the Internet, and some journals publish only online. A few medical journals, like the Journal of the American Medical Association, are considered general medical journals because they cover many fields of medicine. Most medical journals are specialty journals that focus on a particular area of medicine.Medical journals publish many types of articles. Research articles report the results of research studies on a range of topics varying from the basic mechanisms of diseases to clinical trials that compare outcomes of different treatments. Review articles summarize and analyze the information available on a specific topic based on a careful search of the medical literature. Because the results of individual research studies can be affected by many factors, combining results from different studies on the same topic can be helpful in reaching conclusions about the scientific evidence for preventing, diagnosing or treating a particular disease. Case conferences and case reports may be published in medicaljournals to educate physicians about particular illnesses and how to treat them. Editorials in medical journals are short essays that express the views of the authors, often regarding a research or review article published in the same issue. Editorials provide perspective on how the current article fits with other information on the same topic. Letters to the editor provide a way for readers of the medical journal to express comments, questions or criticisms about articles published in that journal.1.The main readers of medical journals areA. the general public.B. health professionals.C. medical critics.D. news reporters.2.Which of the following statements is NOT true?A. Many medical journals also publish online.B. A few medical journals are general medical journals.C. Most medical journals publish only online.D. Most medical journals are specialty journals.3.How many major types of articles are mentioned in the passage?A. Five.B. Seven.C. Four.D. Six.4.An article dealing with results from different studies on the same topic is calledA. a research article.B. a review article.C. a case report.D. an editorial.5.Letters to the editor enable readers of a medical journal to express comments onA. any medical event.B. articles published in the same issue.C. articles published in that journal.D. medical development.阅读理解文章及练习(3) Cooking Oil Fumes Cause Tumor厨房油烟可致癌The leading cause of lung cancer among women in the city was cooking oil fumes while men are more likely to develop the disease from smoking, said medical experts after a five-year research study.Doctors announced the results yesterday with analysis on some new tendencies in lung cancer.They said patients are younger, especially women.According to the Shanghai Tumor research Institute, more local residents die of lung cancer in the city than anything else.Following breast cancer, it has the second-highest incidence rate."An unhealthy lifestyle is a very important reason for lung cancer, "said Dr He Yumin from Shanghai Minshen Traditional Chinese Medicine Tumor Diagnosis and Treatment Center.He followed 2,276 lung cancer patients for five years.Among them,l,483 were male.Smoking causes 70 percent of cases among men while only l8 percent of female patients developed cancer from smoking or inhaling second-hand smoke, according to the report.However, more than 60 percent of women with the disease had long term, close contact with strong oil fumes from cooking and complained about1 irritated eyes and throat.About 32 percent of women fried foods in boiling oil in unventilated kitchens and about 25 percent of women's bedrooms were adjacent to2 the kitchen.However, local women were surprised to learn cooking oil fumes could lead to cancer.Some claimed they may change food preparation methods."Unless my family and I don't eat at home every day, I must stay in the kitchen to cook, "said Xu Li, a 45-year-oldlocal woman."I know the fumes are bad for the skin, but it is the first time I heard that it can result in lung cancer.I have already started frying less."Doctors said women's lung cancer had few links to personal health and physical condition, but was closely related to family cancer history, unhealthy dietary habits and weak immune systems.Other experts agreed with he3."Smoking is by far the biggest cause4 of lung cancer for men, "said Dr Tan Binyong, honorary president of the Respiratory Disease Institute at Fudan University's Medical College."It's true that second-hand smoke and cooking fumes are the main causes among women."He's research also warned people not to stand near of stalls selling5 fried foods due to the poor quality of oils used.The chance of catching lung cancer is three times higher if exposed to the fume for a long time, 6experts said.练习：1.What a new tendency in lung cancer is concluded by the researchers?A Men are more likely to develop lung cancer than women.B Women are more likely to develop lung cancer than men.C Patients with lung cancer become older, especially males.D Patients with lung cancer become younger, especially females.2.Which of the following diseases is the most common among the local residents in Shanghai?A Heart disease.B Breast cancer.C Infectious diseases.D Lung cancer.3.What symptoms may be' complained of by most women with lung cancer after long term, close contact with cooking oil fumes?A Irritated eyes and throat.B Severe pain in both lungs.C Continuous cough and headache.D Difficulty in breathin9.4.What was the local women's reaction when they learned that cooking oil fumes could lead to cancer?A Happy.B Surprised.C Angry.D Careless5.Which of the following has relatively little connection with women's lung cancer?A Family cancer history.B Unhealthy dietary habits.C Weak immune systems.D Personal health and physical condition.阅读理解文章及练习(4) Multivitamins Urged for All Pregnant WomenA recent study in Tanzania found that when pregnant women took vitamins every day, fewer babies were bom too small. Babies that weigh less than two and one-half kilograms at birth have a greater risk of dying. Those that survive are more likely to experience problems with their development. And experts say that as adults they have a higher risk of diseases including heart disease and diabetes. The World Health Organization1 estimates that every year twenty million babies are bom with low birth weight. Nine out of ten of them are bom in developing countries.The new study took place in Dar es Salaam. 4,200 pregnant women received multivitamins. The pills contained all of the vitamins in the B group along with2 vitamins C and E. They also contained several times more iron and folate than the levels advised for women in developed nations. Pregnant women especially in poor countries may find it difficult to get enough vitamins and minerals from the foods in their diet.The scientists compared the findings with results from a group of 4,000 women who did not receive the vitamins.A report by the scientists, from the United States and Tanzania, appeared in the New England Journal of Medicine,3Wafaie Fawzi of the Harvard University School of Public Health4 led the study. None of the women in the study had HTV, the virus that causes AIDS. The scientists reported earlier that daily multivitamins were a low-cost way to reduce fetal deaths in pregnant women infected with5 HIV. The earlier work in Tanzania also found improvement in the mothers in their number of blood cells known as lymphocytes. Lymphocytes increase the body’s immunity against infection.The new study in pregnant women who were not infected with the AIDS virus found that multivitamins reduced the risk of low birth weight. Just under eight percent of the babies bom to women who took the multivitamins weighed less than 2,500 grams. The rate was almost nine and one-half percent in the group of women who received a placebo, an inactive pill, instead of the vitamins. But the vitamins did not do much to reduce the rates of babies being bom too early or dying while still a fetus. Still, the researchers say multivitamins should be considered for all pregnant women in developing countries.练习：1.How many babies are bom with low birth weight in the developed countries every year according to WHO?A. 20,000,000.B. 18,000,000.C. 2,000,000.D. 38,000,000.2.A pill of multivitamins may contain all of the following substances EXCEPTA. all vitamins in the B group.B. vitamins C and E.C. much iron and folate.D. antiviral substances.3.Which of the following is NOT one of the effects of multivitamins mentioned in the passage?A. To reduce the rate of babies bom too early.B. To reduce the risk of low birth weight.C. To reduce fetal deaths in pregnant women infected with HTV.D. To increase the number of lymphocytes in mothers’blood.4.What a role do lymphocytes play in the human body?A. To reduce the rate of dying while still a fetus.B. To raise the body’s immunity against infection.C. To help prevent the development of heart disease.D. To help prevent the development of diabetes.5.How many percent of babies were bom with low birth weight to women who were not infected with the AIDS virus and took the multivitamins according to a new study?A. Less than 8%.B. About 9.5%.C. L 5%.D 17.5%.阅读理解文章及练习(5) U. S. Eats Too Much Salt 美国人吃盐过量People in the United States consume more than twice the recommended amount1 of salt, raising their risk for high blood pressure, heart attacks and strokes, government health experts said on Thursday.They found nearly 70 percent of U. S. adults are in high-risk groups that would benefit from a lower-salt diet of no more than 1,500 mg per day2，yet most consume closer to 3,500 mg per day.“It’s important for people to eat less salt. People who adopt a heart-healthy eating pattern that includes a diet low in sodium and rich in potassium and calcium can improve their blood pressure,”Dr. Darwin Labarthe of the Centers for Disease Control and Prevention said in a statement.“People need to know their recommended daily sodium limit and take action to reduce sodium intake,”Labarthe said.The study in CDC’s weekly report on death and disease used national survey data to show that two out of threeadults should be consuming no more than 1，500 mg of sodium per day because they are black or over the age of 40一which are considered high-risk groups.Yet studies show most people in the United States eat 3,436 mg of sodium per day, according to a 2005–2006 CDC estimate.Most of the sodium eaten comes from packaged, processed and restaurant foods. The CDC said it will join other agencies in the Health and Human Services department in working with major food manufacturers and chain restaurants to reduce sodium levels in the food supply.Nationwide, 16 million men and women have heart disease and 5.8 million are estimated to have had a stroke. Cutting salt consumption can reduce these risks, the CDC said.练习：1.Too much salt raises one’s risk forA.high blood pressure.B.heart attacks.C.strokes.D.all of the above.2.How much salt do most American adults eat per day?A.No more than 1,500 mg.B.Closer to 3,500 mg.C.Less than 3,436 mg.D.Closer to 1,500 mg.3.To improve their blood pressure, people should have a dietA.rich in potassium and sodium.B.rich in potassium and calcium.C.rich in calcium arid sodium.D.none of the above.4.The high-risk groups include thoseA.who are black.B.who are over the age of 40.C.who are white and young.D.both A and B.5.Packaged, processed and restaurant foods are known to beA.cheap.B.tasty.C.rich in salt.D.healthy.阅读理解文章及练习(6) Pushbike Peril 自行车的危险Low speed bicycle crashes can badly injure 一or even kill 一children if they fall onto the ends of the handlebars. So a team of engineers is redesigning the humble handlebar in a bid to make it safer.Kristy Arbogast, a bioengineer at the Children's Hospital of Philadelphia in Pennsylvania, began the project with her colleagues after a study of serious abdominal injuries in children in the past 30 years showed2 that more than a third were caused by bicycle accidents. "The task was to identify how the injuries occurred and come up with some countermeasures,"3 she says.By interviewing the children and their parents，Arbogast and her team were able to4 reconstruct many of the accidents and identified a common mechanism responsible for serious injuries. They discovered that most occur when children hit an obstacle at a slow speed，causing them to topple over5. To maintain their balance they turn the handlebars through 90 degrees 一but their momentum forces them into the end of the handlebars. The bike then falls over and the other end of the handlebars hits the ground, ramming it into their abdomen6.The solution the group came up with is a handgrip fitted with a spring and damping system.The spring absorbs up to 50 per cent of the forces transmitted through the handlebars in an impact. The grouphopes to commercialize the device，which should add only a few dollars to the cost of a bike. “But our task has been one of education because up until now, bicycle manufacturers were unaware of the problem," says Arbogast.The team has also approached the US Consumer Product Safety Commission to try to persuade manufacturers to adopt the new design. A decision is expected later this year.练习：1.According to the passage, some engineers are trying to improve the handlebars becauseA they are not noble enough.B they may kill children.C they are likely to crash.D they make the bike move at a low speed.2.In paragraph 2，the author mentions a study of serious abdominal injuries A to discuss how abdominal injuries in children occur.B to show that more than a third injuries were caused by bicycle accidents.C to point out what the countermeasures can be.D to tell us why Kristy Arbogast began the project.3.Paragraph 3 mainly discussesA why the children and their parents were interviewed.B when the children turn the handlebars through 90 degrees.C what causes the children to topple over.D how serious injuries occur.4.The passage implies thatA it is not easy to persuade manufacturers to adopt the new design.B the team of engineers has not found any countermeasures.C children like to ride bicycles at a very low speed.D a lot of children were killed in bicycle accidents in the past 30 years.5. In which of the following ways the handgrip work?A It can be commercialized.B It reduces the dangerous forces in bicycle accidents.C It adds a few dollars to the cost of a bike.D It changes the direction of the handlebars in an impact.阅读理解文章及练习(7) Late-night Drinking在深夜饮咖啡Coffee lovers beware. Having a quick “pick-me-up”cup of coffee1 late in the day will play havoc with2 your sleep. As well as being a stimulant, caffeine interrupts the flow of melatonin, the brain hormone that sends people into a sleep.Melatonin levels normally start to rise about two hours before bedtime. Levels then peak between 2 am and 4 am, before falling again.3"It's the neurohormone that controls our sleep and tells our body when to sleep and when to wake，，，says Maurice Ohayon of the Stanford Sleep Epidemiology Research Center at Stanford University in California. But researchers in Israel have found that caffeinated coffee halves the body's levels of this sleep hormone.Lotan Shilo and a team at the Sapir Medical Center in Tel Aviv University found that six volunteers slept less well after a cup of caffeinated coffee than after drinking the same amount of decaf. On average, subjects slept 336 minutes per night after drinking caffeinated coffee, compared with 415 minutes after decaf. They also took half an hour to drop off4一twice as long as usual 一and jigged around5 in bed twice as much.In the second phase of the experiment, the researchers woke the volunteers every three hours and asked them to give a urine sample. Shilo measured concentrations of a breakdown product of melatonin. The results suggest that melatonin concentrations in caffeine drinkers were half those in decaf drinkers. In a paper accepted for publication in Sleep Medicine，the researchers suggest6 that caffeine blocks production of the enzyme that drives melatonin production.Because it can take many hours to eliminate caffeine from the body，Ohayon recommends that coffee lovers switch to decaf after lunch.练习：1. The author mentions "pick-me-up" to indicate thatA melatonin levels need to be raised.B neurohormone can wake us up.C coffee is a stimulant.D decaf is a caffeinated coffee.2.Which of the following tells us how caffeine affects sleep?A Caffeine blocks production of the enzyme that stops melatonin production.B Caffeine interrupts the flow of the hormone that prevents people from sleeping.C Caffeine halves the body's levels of sleep hormone.D Caffeine stays in the body for many hours.3. What does paragraph 3 mainly discuss?A Different effects of caffeinated coffee and decaf on sleep.B Different findings of Lotan Shilo and a team about caffeine.C The fact that the subjects slept 415 minutes per night after drinking decaf.D The evidence that the subjects took half an hour to fall asleep.4. What does the experiment mentioned in paragraph 4 prove? A There are more enzymes in decaf drinkers' urine sample.B There are more melatonin concentrations in caffeine drinkers' urine sample.C Decaf drinkers produce less melatonin.D Caffeine drinkers produce less sleep hormone.5. The author of this passage probably agrees thatA coffee lovers sleep less than those who do not drink coffee.B we should not drink coffee after supper.C people sleep more soundly at midnight than at 3 am.D if we feel sleepy at night, we should go to bed immediately.阅读理解文章及练习(8) Eat Healthy 健康饮食"Clean your plate!" and "Be a member of the clean-plate club1!’’Just about every kid in the US has heard this from a parent or grandparent. Often, it's accompanied by an appeal：“Just think about those starving orphans in Africa!2" Sure, we should be grateful for every bite of food. Unfortunately, many people in the US take too many bites3. Instead of staying "clean the plate", perhaps we should save some food for tomorrow.According to news reports, US restaurants are partly to blame for the growing bellies. A waiter puts a plate of food in front of each customer, with two to four times the amount recommended by the government, according to a USA Today story.4 Americans traditionally associate quantity with value and most restaurants try to give them that. They prefer to have customers complain about too much food rather than too little.Barbara Rolls, a nutrition professor at Pennsylvania State University; told USA Today that restaurant portion sizes began (o grow in the 1970s, the same time that the American waistline began to expand.Health experts have tried to get many restaurants to serve smaller portions. Now, apparently, some customers are calling for this too. The restaurant industry trade magazine QSR reported last month that 57 percent of more than 4,000 people surveyed believe restaurants serve portions that are too large; 23 percent had no opinion; 20 percent disagreed. But a closer look at the survey indicates that many Americans who can't afford fine dining still prefer large portions. Seventy percent of those earning at least $150,000 per year prefer smaller portions; but only 45 percent of those earning less than $25,000 want smaller.It's not that working class Americans don't want to eat healthy. It's just that, "after long hours at low-paying jobs, getting less on their plate hardly seems like a good deal.5 They live frompaycheck to paycheck, happy to save a little money for next year's Christmas presents.练习：1. Parents in the United States tend to ask their childrenA to save food.B to wash the dishes.C not to waste food.D not to eat too much.2. Why do American restaurants serve large portions?A Because Americans associate quantity with value.B Because Americans have big bellies.C Because Americans are good eaters.D Because Americans are greedy.3.What happened in the 1970s?A The US government recommended the amount of food a restaurant gave to a customer.B Health experts persuaded restaurants to serve smaller portions.C The United States produced more grain than needed.D The American waistline started to expand.4.What does the survey indicate?A Many poor Americans want large portions.B Twenty percent Americans want smaller portions.C Fifty seven percent Americans earn $150,000 per year.D Twenty three percent Americans earn less than $25,000 per year.5.Which of the following is Not true of working class Americans?A They work long hours.B They live from paycheck to paycheck.C They don't want to be healthy eaters.D They want to save money for their children.阅读理解文章及练习(9) U. S. to Start $3.2 Billion Child Health Study in JanuaryA study that will cost $3.2 billion and last more than two decades to track the health of 100,000 U.S. children from before birth to age 21 will be launched in January, U. S. health officials said on Friday.Officials from the U.S. government’s National Institutes of Health said they hope the study, to be conducted at 105 locations throughout the United States, can help identify early-life influences that affect later development, with the goal of learning new ways to treat or prevent illness.The study will examine hereditary and environmental factors such as exposure to certain chemicals that affect health.Researchers will collect genetic and biological samples from people in the study as well as samples from the homes of the women and their babies including air, water, dust and materials used to construct their residences, the NIH said.Officials said more than $200 million has been spent already and the study is projected to cost $3.2 billion.“We anticipate that in the long term1，what we learn from the study will result in a significant savings in the nation’s health care costs,”Dr. Duane Alexander, who heads the NIH’s Eunice Kennedy Shriver National Institute of Child Health and Human Development, told reporters.The study will begin in January when the University of North Carolina and the Mount Sinai School of Medicine in New York start signing up2 pregnant women whose babies will then be followed to age 21.Some of the early findings will be about factors behind pre-term birth3, which has become more common in recent years, according to Dr. Peter Scheidt of the NIH, who heads the study.The people taking part will be from rural, urban and suburban areas, from all income and educational levels and from all racial groups, the NIH said.练习：1.The aim of the study is to find new ways toA. conduct research.B. track public health.C. prevent or treat illness.D. speed up development.2.Researchers will collect all the following EXCEPTA. genetic samples from people in the study.B. biological samples from people in the study.C. samples from the homes of the women and their babies.D. samples of air and water from hospitals.3.It is expected that through the study the nation’s health care costsA. will be lowered in the long run.B. will be significantly increased.C. will be more than $200 million.D. will reach $3.2 billion.4.The babies of the participants will be followedA. throughout their lives.B. for more than two decades.C. from birth to 21 months.D. until they get married.5.Which is NOT true of the people in the study?A. They’ll be from various areas.B. They’ll be from all income levels.C. They’ll be from all educational levels.D. They’ll be from all age groups.阅读理解文章及练习(10) Cigars Instead?Smoking one or two cigars a day doubles the risk of cancers of the lip, tongue, mouth, and throat, according to a government study.Daily cigars also increase the risk of lung cancer and cancer of the esophagus，and increase the risk of cancer of the larynx (voicebox) sixfold1，say researchers at the National Cancer Institute in Bethesda, Maryland.In addition, the report revealed that smoking three or four cigars a day increased the risk of oral cancer to 8.5 times the risk for nonsmokers2 and the risk of esophageal cancer by four times the risk of nonsmokers.The health effects of smoking cigars is one of eight sections of the article “Cigars ：Health Effects and Trends". The researchers report that, compared with a cigarette, a large cigar emits up to 90 times as much carcinogenic tobacco-specific nitrosamines.“This article provides clear and invaluable information about the disturbing increase3 in cigar use and the significant public health consequences4 for the country," said Dr. Richard Klausner, director of the National Cancer Institute，in a statement."The data are clear 一the harmful substances and carcinogens in cigar smoke, like cigarettes, are associated with5 the increased risks of several kinds of cancers as well as heart and lung diseases，”he added. “In other words，cigars are not safe alternatives to cigarettes6 and may be addictive. ”"To those individuals who may be thinking about smoking cigars, our advice is —don't.7 To those currently smoking cigars, quitting is the only way to eliminate completely the cancer, heart and lung disease risks，”warned Klausner.According to a National Cancer Institute press release8，there haven't been any studies on the health effects on nonsmokers at cigar social events，but "... a significant body of evidence9 clearly demonstrates an increased lung cancer risk from secondhand smoke. ”练习：1.According to the report, smoking three or four cigars a dayA increases the risk of oral cancer for non-smokers.B greatly increases the risk of oral cancer for smokers.C increases the risk of more than one cancer for non-smokers.D greatly increases the risk of more than one cancer for smokers.。