2020年职称英语卫生类C级概括大意历年真题及解析2020年真题Ebola Outbreak1 You are likely aware that several countries in West Africa are batting an Ebola Outbreak.Ebola is a dangerous and often lethal viral infection. Scientists believe that humans contacted the virus by eating the meat of rare animals. It is now believed that bats are the primary carriers of the virus.2 To date, there are only three major countries in West Africa experiencing a major outbreak:Sierra Leone, Liberia and Guinea. However, other countries such as Nigeria have reported confirmed cases of Ebola within their borders.3 Unless you recently visited one of the three affected West countries, your risk of contacting the virus isvirtually zero. Unlike other recent airborne virus outbreaks like SARS, the Ebola virus can only be spread through direct contact with an infected person. Spbcifically, Ebola is spread through contact with body fluids. Though, the virus is transmittable, only an infected person exhibiting symptoms is communicable.4 The signs and symptoms of Ebola are non-specific and patients typically exhibit them after a week of contacting the virus. Symptoms may appear as early as two days or aslate as three weeks after initial infection. Symptoms includedisgust, weakness and stomach pain. More uncommon symptoms include chest pain, bleeding and sore throat.5 Ebola is devastating because of its ability to attack and replicate in every organ of the body.This causes an over-stimulation of the body's inflammatory response, causing the flu-like symptoms. The virus also causes bleeding and impairs the body's normal clotting mechanism(凝血机制), making bleeding even more severe. Loss of blood volume and decreased organ perfusion (器官灌注), ultimately lead to organ failure and death.6 The current outbreak is the deadliest viral outbreak in over 35 years. While diseases such as the malaria (疟疾) are far more communicable, Ebola is one of the world's most fatal viral infections. Ebola's fatality rate exceeds that of SARS.23. Paragraph 2 __________24. Paragraph 3 __________25. Paragraph 4 __________26. Paragraph 5 __________A. Am I at risk of contacting the virus?B. Is the current outbreak the deadlines?C. How do I know ifI have contacted the virus?D. What areas are currently affected?E. What exactly does Ebola do to the body?F. What caused the Ebola outbreak?27. The initial Ebola outbreak was found in28. The difference between SARS and Ebola viruses liesin__________.29. The symptoms of the patients after being infected may first appear __________.30. The Ebola virus transmits by contact with __________.A. infected body fluidsB. against the outbreak severityC. the mode of transmissionD. the initial days of being infectedE. three countries in West AfricaF. within a wide range of days2020年真题Eye Problems1 Our 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).2 The thinning of the ozone (臭氧) layer means moreshort-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 andeventually 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. M/re/lle Bonnet, who took part in recent research. She says that the six muscles controlling each eye move more than100,000 times a day and that everyone should learn to exercise their eye muscles and allow them to rest.4 It was traditionally thought that near-or far-sightedness were inherited from our parents and could not be influenced by environmental factors, but new research is challenging this assumption.5 Recent studies suggest that up to 80 percent 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 of 10, say the researchers.6 Problems with night vision, which affect around 25 percent of people, are also on the increase because of computer use. Using computer screens means the eye must operate in electromagnetic fields (电磁场) that make it work harder. It is estimated that 25 to 30 percent of people have eye conditions, such as difficulty with night vision, which results from staring at a screen.23. Paragraph 2 __________24. Paragraph 3 __________25. Paragraph 5 __________26. Paragraph 6 __________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 eve comolaints27. Sunlight in the summer is believed to be one cause of__________.28. We can wear anti-UV glasses to protect ___________.29. We used to believe that near-or far-sightedness were inherited from __________.30. Over 25% of people are estimated to have difficulty with night vision due to __________.A. our parentsB. clouded visionC. eye musclesD. our eyesE. computer useF. eye move2020年真题Traffic Jams--No End in Sight1 Traffic congestion (拥堵) affects people throughout the world. Traffic jams cause smog in dozens of cities acrossboth the developed and developing world. In the U. S., commuters (通勤人员) spend an average of a full working week each year sitting in traffic jams, according to the Texas Transportation Institute. While alternative ways of getting around are available,most people still choose their cars because they are looking for convenience, comfort and privacy.2 The most promising technique for reducing city traffic is called congestion pricing, whereby cities charge a toll to enter certain parts of town at certain times of day. In theory, if the toll is high enough, some drivers will cancel their trips or go by bus or train. And in practice it seemsto work: Singapore, London and Stockholm have reducedtraffic and pollution in city centres thanks to congestion pricing.3 Another way to reduce rush-hour traffic is for employers to implement flextime, which lets employees travel to and from work at off-peak traffic times to avoid the rush hour. Those who have to travel during busy times can do their part by sharing cars. Employers can also allow more staffto telecommute (work from home) so as to keep more cars offthe road altogether.4 Some urban planners still believe that the best way to ease traffic congestion is to build more roads, especially roads that can take drivers around or over crowded "citystreets. But such techniques do not really keep cars offthe road; they only accommodate more of them.Other, more forward-thinking, planners know that more and more drivers and cars are taking to the roads every day, and they are unwilling to encourage more private automobiles when public transport is so much better both for people and the environment. For this reason, the American government has decided to spend some $7 billion on helping to increase capacity on public-transport systems and upgrade them with more efficient technologies. But environmentalists complain that such funding is tiny compared with the$50 billion being spent on roads and bridges.23. Paragraph 1 __________24. Paragraph 2__________25. Paragraph 3 ___________26. Paragraph 4 __________A. Paying to get inB. Changing work practiceC. Not doing enoughD. A solution which is no solutionE. Closing city centres to trafficF. A global problem27. Most American drivers think it convenient to__________.28. If charged high enough, some drivers may __________to enter certain parts of town.29. Building more roads is not an effective way to__________.30. The U. S. government has planned to__________updating public-transport systems.A. reduce traffic jamsB. drive aroundC. go by busD. spend more moneyE. travel regularlyF. encourage more private cars答案与解析2020年真题23.D。