下载亿题库APP
联系电话:400-660-1360
请谨慎保管和记忆你的密码,以免泄露和丢失
请谨慎保管和记忆你的密码,以免泄露和丢失
2025年职称英语考试《卫生类》考试共65题,分为单选题和多选题和判断题和计算题和简答题和不定项。小编每天为您准备了5道每日一练题目(附答案解析),一步一步陪你备考,每一次练习的成功,都会淋漓尽致的反映在分数上。一起加油前行。
1、Human Heart Can Make New CellsSolving a longstanding (为时甚久的) mystery, scientists have found that the human heart continues to generate new cardiac(心脏的 ) cells throughout the life span, although the rate of new cell production slows with age.The finding, published in the April 3 issue of Science, could open a new path forthe treatment of heart diseases such as heart failure and heart attack, experts say."We find that the beating cells in the heart, cardiomyocytes (心肌细胞), are renewed," said lead researcher Dr. Jonas Frisen, a professorof stem cell research at the Karolinska Institute in Stockholm, Sweden. "It has previously not been known whether we were limited to the cardiomyocytes we are born with orif they could be renewed," he said.The process of renewing these cells changes over time, Frisen added. In a 20 - year - old, about I percent of cardiomyocytes are exchanged each year, but the turnover (更替) rate decreases with age to only 0.45 percent by age 75."If we can understand how the generation of new cardiomyocytes is regulated, it may be potentially possible to develop pharmaceuticals (药物) that promote this process to stimulate regeneration after, forexample, a heart attack," Frisen said.That could lead to treatment that helps restore damaged hearts."A lot of people suffer from chronic heart failure," noted co - authorDr. Ratan Bhardwaj, also from the Karolinska Institute. "Chronic heart failure arises from heart cells dying," he said.With this finding, scientists are "opening the doorto potential therapies (疗法) to having ourselves heal ourselves." Bhardwaj said. "Maybe one could devise a pharmaceutical agent that would make heart cells make new and more cells to overcome the problem they are facing. "But barriers remain. According to Bhardwaj, scientists do not yet know how to increase heart cell production to a rate that would replace cells faster than they are dying off, especially in older patients with heart failure. In addition, the number of new cells the heart produces was estimated using healthy hearts-whether the rate of cell turnover in diseased hearts is the same remains unknown.It is not known yet if the rate of cell turnover in diseased hearts ______.【单选题】
A.is high enough to replace cells faster than they\'re dying off
B.is of any use to researchers
C.is the same as that in healthy hearts
D.changes over time
正确答案:C
答案解析:本题难度不大,答案依据比较明显。带着题干信息词回文章定位,答案依据是文章最后一段最后一句,谈到心脏新细胞的制造数量是按照健康心脏来计算的,但是患病心脏的细胞更新率是否一样还是未知,回来看选项,C项和原文句意相符,是答案。
2、Hurricanes1 Did you know that before 1950, hurricanes had no names? They were simply given numbers. The first names ware simply Alpha, Bravo, Charlie, etc. But in 1953, female names were given because of the unpredictability factorof the storms. In 1979, realizing the sexist nature of such named, the lists were expanded to include both men and women.2 Hurricanes and typhoons are the same things. If they form in the Atlantic, we call these strong storms hurricanes, from the West Indian word hurricane, meaning "big wind. " and if they are pacific storms, they are called typhoons from the Chinese taifun, meaning "great wind. " To be classified as a hurricane, the storm must have maximum winds of at least 75 mph. These storms are big, many hundreds of miles in diameter.3 Hurricanes get their power from water vaporas it gives out its stored-up energy. All water vaporgives out heat as it condenses from a gaseous state to a liquid state over fixed points on the equator. To make a hurricane, you must have extremely wet, warm air, the kind of air that can only be found in tropical regions.4 Scientists have determined that the heat given out in the process of water condensation can be as high as 95 billion kilowatts per hours. In just one day alone, the storm can produce more energy than many industrialized nations need in an entire year! The problem is that we don\'t know how to make such great energy work forus.5 Predicting the path of a hurricane is one of the most difficult tasks forforecasters, it moves at a typical speed of 15 mph. But not always. Some storms may race along at twice this speed, then suddenly stop and remain in the same location in the ocean forseveral days. It can be maddening if you live in a coastal area that may be hit.6 The biggest advance in early detection is continuous watch from weather satellites. With these, we can see the storms form and track them fully, from birth to death. While they can still kill people and destroy property, hurricanes will never surprise any nation again.The main consideration of using males and females\' names forhurricanes is ____.【单选题】
A.timely discovery of hurricane
B.convenience
C.sex equality
D.its connection with humans
E.huge power
F.uncertainty
正确答案:C
答案解析:答案的依据在第一段。20世纪70年代,西方国家兴起妇女解放运动。为避免性别歧视,采用男性和女性的名字为飓风命名。
3、Parkinson\'s Disease1. Parkinson\'s disease affects the way you move. It happens when there is a problem with certain nerve cells in the brain. Normally, these nerve cells make an important chemical called dopamine(多巴胺). Dopamine sends signals to the part of your brain that controls movement. It lets your muscles move smoothly and do what you want them to do. When you have Parkinson\'s, these nerve cells break down. Then you no longer have enough dopamine, and you have trouble moving the way you want to.2. No one knows forsure what makes these nerve cells break down. But scientists are doing a lot of research to look forthe answer. They are studying many possible causes, including aging and poisons in the environment. Abnormal genes seem to lead to Parkinson\'s disease in some people. But so far, there is not enough proof to show that it is always inherited.3. Tremor(颤抖) may be the first symptom you notice. It is one of the most common signs of the disease, although not everyone has it. Tremoroften starts in just one arm orleg oronly on one side of the body. It may be worse when you are awake but not moving the affected arm orleg. It may get better when you move the limb oryou are asleep. In time, Parkinson\'s affects muscles all through your body, so it can lead to problems like trouble swallowing orconstipation(便秘) . In the later stages of the disease, a person with Parkinson\'s may have a fixed orblank expression, trouble speaking, and other problems. Some people also have a decrease in mental skills.4. At this time, there is no cure forParkinson\'s disease. But there are several types of medicines that can control the symptoms and make the disease easier to live with. You may not even need treatment if your symptoms are not obvious. Your doctormay wait to prescribe medicines until your symptoms start to get in the way of your daily life. Your doctorwill adjust your medicines as your symptoms get worse. You may need to take several medicines to get the best results.A lot of research is being done to find out ______.【单选题】
A.if there isn’t enough dopamine in your body
B.what affects muscles all through your body
C.which cannot be cured yet
D.if you have a fixed orblank expression
E.which may be the first symptom you notice
F.what causes Parkinson\'s disease
正确答案:F
答案解析:本题难度不大,带着题干信息词回文章定位,答案依据是文章第二段的第二句和第三句,谈到科学家们正在为找到答案而进行大量的研究,研究各种可能病因,回来看选项,F项和原文句意相符,是答案。
4、ExerciseWhether ornot 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, exercise 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. Forthem moderation is of vital importance. Just how much exercise a person of a given age can safely take is a question hard to answer. Individual variability is ____ great to permit of generalization. A game of tennis may be perfectly safe forone person of forty but folly foranother. The safe limitforexercise 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 foranyone. 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 depends upon one\'s physical condition. Young people can safely enjoy vigorous competitive sports, but most older persons do bet ter to limitthemselves 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.【单选题】
A.very
B.too
C.constantly
D.considerably
正确答案:B
答案解析:前句提到,“不同年龄的人从事多大量的运动是一个难以回答的问题”,显然本句就应该是“个体差异太大,无法一概而论”,因此too是最恰当的。我们都知道,“too…to…”的结构具有否定的意义,too?great?to?permit?of?generalization正是这个意思。故B为正确答案。
5、Importance of Children\'s Oral HealthFebruary is National Children\'s Dental(牙齿的) Health Month, but in children good oral(口部的) care is critical every day. The first comprehensive study on the nation\'s oral health, released recently by the Office of the U. S. Surgeon General, calls dental and oral diseases a "silent epidemic (流行病)", even in children. The report states that more than 51 million school hours are lost each year to dental - related illness. In fact, a recent study pointed to dental care as the most common unmet health need among American children.To help counter this, the American Academy of Periodontology (牙周病学) (AAP) is launching an effort to educate children and parents about the prevention of dental diseases in children."This is important because oral problems can impact self - esteem forchildren and lead to problems of eating, speaking and attending to learning," said Michael McGuire, president of the AAP.Common dental problems seen in children are cavities (龋洞) and gingivitis (龈炎), which are found in the majority of U. S. children. "When these problems are not caught early and treated, they can develop into more severe problems and cause unnecessary suffering," said McGuire. "However, much of the time, oral problems are avoidable problems."In the Rio Grande Valley in Texas, agroupof more than 120 dentists(牙医) volunteers to deliver dental care to thousands of low - income children each year with its Mobile Dental Unit that travels from school to school."According to the Surgeon General\'s Report, about 37 percent of children have not had a dental visit before starting school," said McGuire. When children don\'t see dentists, they miss the opportunity to have problems caught early before they develop into larger, more expensive problems to treat, and parents miss the opportunity to learn how to promote good oral habits in their children.Dental and oral diseases are common in both adults and children.【单选题】
A.Right
B.Wrong
C.Not mentioned
正确答案:A
答案解析:本题有一定难度,需要吃透原文句意,带者题干信息词回文章定位,主要答案依据在文章第一段第二句后半部分:…calls dental and oral diseases a“silent epidemic”,even in children谈到牙齿和口腔疾病是流行病,甚至儿童也不能幸免,换句话说,牙齿和口腔疾病在成人和儿童之间都常见,所以本题正确,答案是A。
为什么商务英语考试中有的考生不允许入场?:为什么商务英语考试中有的考生不允许入场?考点将拒绝考生入场,并不予改期考试或退还考费:1. 抵达考点与网上报名所选考点不一致;2. 未携带准考证或规定的有效身份证件;3. 所携身份证件的有效性未通过核验;4. 身份证件类型和号码与所持准考证显示信息不符;5. 身份证件相片与本人明显不符;6. 未按准考证规定时间到达考场;7. 不服从监考人员的管理,扰乱考场秩序。
需要具备怎样的基础才能备考商务英语BEC中级?:商务英语中级需要有大学英语四级到六级的水平。
学习商务英语BEC初级需要具备怎样的基础?:学习商务英语BEC初级需要具备怎样的基础?根据BEC考试大纲的要求,学习BEC初级需要有公共英语四级的水平。
2023-06-07
2023-06-07
2023-06-07
2023-06-07
2023-06-07
微信扫码关注公众号
获取更多考试热门资料