2019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。小编为您整理精选模拟习题10道，附答案解析，供您考前自测提升！

1、Smallpox virus
It'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 vials. And the last “official” stocks of live 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 ____ 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.
【单选题】

A.need

B.case

C.necessity

D.time

正确答案:B

答案解析:in?case是固定用法，意思是“万一”。整个句子说的是：因此，又有了一个保存病毒的理由——万一这种病卷土重来。

2、Blasts from the Past
1 Volcanoes were more destructive in ancient history. Not because they were bigger, but because the carbon they released wiped out life with greater ease.
2 Paul Wignall from the University of Leeds was investigating the link between volcanic eruptions and mass extinctions. Not all volcanic eruptions killed off large numbers of animals, but all the mass extinctions over the past 300. million years coincided with huge formations of volcanic rock. To his surprise, the older the massive volcanic eruptions were, the more damage they seemed to do.
3 Wignall calculated the "killing efficiency" for these volcanoes by comparing the proportion of life they killed off with the volume of lava that they produced. He found that size for size, older eruptions were at least 10 times as effective at wiping out life as their more recent rivals.
4 The Permian extinction, for example, which happened 250 million years ago, is marked by floods of volcanic rock in. Siberia that cover an area roughly the size of western Europe, Those volcanoes are thought to have pumped out about 10 gigatonnes of carbon as carbon dioxide, The global warming that followed wiped out 8 per cent of all marine genera at the time, and it took 5 million years far tire planet to recover.
5 Yet 60 million years ago in the late Palaeocene there was another huge amount of volcanic activity and global-warming but no mass extinction. Some animals did disappear but things returned to normal within ten thousands of years, "The most recent ones hardly have an effect at all," Wignall says. He ignored the extinction which wiped out the dinosaurs at the end of the Cretaceous, 65 million years ago, because many scientists believe it was primarily caused by the impact of an asteroid.
6 Wignall thinks that older volcanoes had more killing power because more recent life forms were better adapted to dealing with increased levels of C02 Ocean chemistry may also have played a role. As the supercontinents broke up and exposed more coastline there may have been more weathering of silica rocks. This would have encouraged the growth of phytoplankton in the oceans, increasing the amount of C02 absorbed from the atmosphere.
7 Vincent Courtillot, director of the Paris Geophysical Institute in France, says that Wignall's idea is provocative. But he says it is incredibly hard to do these sorts of calculations. He points out that the killing power of volcanic eruptions depends on how long they fasted. And it is impossible to tell whether the huge blasts lasted for thousands or millions of years.
8 Courtillot also adds that it is difficult to estimate how much lava prehistoric volcanoes produced, and that lava volume may not necessarily correspond to carbon dioxide or sulphur dioxide emissions.
The cause of the extinction of dinosaurs____.
【单选题】

A.than more recent ones

B.the killing efficiency for older eruptions

C.has remained controversial

D.Wignall's calculations as acceptable

E.has been mown to us all

F.his ideas

正确答案:C

答案解析:has remained controversial：-直是有争议的。把这一选项跟题干合成后生成的句子说的是：有关恐龙灭绝的原因一直是有争议的。第五段有这么一句话：…because many scientists believe it was primarily caused by the impact of an asteroid. 因为许多科学家相信恐龙的灭绝主要是由于一颗小行星的影响造成的。“许多科学家”当然不是全部。“有关恐龙灭绝的原因一直是有争议的”这个命题是可以从这句话中推断出来的。

3、Hurricanes
1 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 factor of 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 vapor as it gives out its stored-up energy. All water vapor gives 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 for us.
5 Predicting the path of a hurricane is one of the most difficult tasks for forecasters, 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 for several 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.
Paragraph 4____
【单选题】

A.A Short History of Naming Hurricanes

B.Harnessing the Hurricane Energy

C.Difficulty in Forecasting the Course of a Hurricane

D.Huge Energy Stored in a Hurricane

E.Forecast a Hurricane Through Satellite Watching

F.No Much Difference Between Hurricane and Typhoon

正确答案:D

答案解析:每一次发生的飓风中蕴涵着巨大的能量。本段中还列出具体的数字。

4、Egypt Felled by Famine
Even ancient Egypt's mighty pyramid builders were powerless in the face of the famine that helped bring down their civilization around 2180 BC. Now evidence gleaned from mud deposited by the River Nile suggests that a shift in climate thousands of kilometers to the south was ultimately to blame and the same or worse could happen today.
The ancient Egyptians depended on the Nile's annual floods to irrigate their crops. But any change in climate that pushed the African monsoons southwards out of Ethiopia would have diminished these floods.
Dwindling rains in the Ethiopian highlands would have meant fewer plants to stablize the soil. When rain did fall it would have washed large amounts of soil into the Blue Nile and into Egypt, along with sediment from the White Nile.
The Blue Nile mud has a different isotope signature from that of the White Nile. So by analyzing isotope differences in mud deposited in the Nile Delta, Michael Krom of Leeds University worked out what proportion of sediment came from each branch of the river.
Krom reasons that during periods of drought, the amount of the Blue Nile mud in the river would be relatively high. He found that one of these periods, from 4,500 to 4,200 years ago, immediately predates the fall of the Egypt's Old Kingdom.
The weakened waters would have been catastrophic for the Egyptians. " Changes that affect food supply don't have to be very large to have a ripple effect in societies," says Bill Ryan of the Lamont Doberty Earth Observatory in New York.
"Similar events today could be even more devastating," says team member Daniel Stanley, a geoarchaeologist from the Smithsonian Institution in Washington, D C. " Anything humans do to shift the climate belts would have an even worse effect along the Nile system today because the populations have increased dramatically. "
Why does the author mention "pyramid builders " ?
【单选题】

A.Because they once worked miracles.

B.Because they were well-built.

C.Because they were actually very weak.

D.Because even they were unable to rescue their civilization.

正确答案:D

答案解析: D：甚至是他们也不能挽救他们的文明。因此D是正确的答案。A：他们曾创造过奇迹。B:他们很强壮。C：他们其实很弱。

5、The Ideal Husband
Science now might be able to explain women's fascination with Brad Pitt's face and George Clooney's eyes. Women seem to judge potential mate by how masculine their features are, new research shows. Men with square jaws and well-defined brow ridges are seen as good short-term partners, while those with more feminine traits such as a rounder face and fuller lips are perceived as better long-term mates.
In the study by Daniel Kruger at the US's University of Michigan, 854 subjects viewed a series of male head shots that had been digitally changed to exaggerate or minimize masculine traits. They then . answered questions about how they expected the men in the photos to behave.
Most participants said that those with more masculine features were likely to be risky, competitive, and more apt to fight, challenge bosses, cheat on spouses and put less effort into parenting. Those with more feminine faces were seen as good parents and husbands, hard workers and emotionally supportive mates.
But, despite all the negative characteristics, when asked who they would choose for a short-term relationship, women selected the more masculine looking men. Brad and George, both chiseled jaws and well-defined brows, then would be good for a brief romance, not for something longer.
The study was published in the December issue of the US journal Personal Relationships.
Kruger said that from an evolutionary perspective, this makes sense. The key is testosterone, the hormone responsible ____ the development of masculine facial features and other sexual characteristics. It has been found to affect the body's ability to fight disease: men with high levels of the hormone are typically strong and healthy- traits women want to pass on to their children.
However, increased testosterone has also been linked to cheating and violence in relationships. So, these men might produce high quality offspring, but they don't always make great parents or faithful mates, Kruger says.
The scientific community have shown skepticism toward physiognomy, which links facial characteristics to certain behavioral traits. But Kruger argues that the research is a valuable tool for understanding mating strategies. And, of course, for explaining why Tony Leung and Takeshi Kanesshiro have millions of female fans. It might have to do with their genes. Or something to do with ours.
【单选题】

A.of

B.at

C.for

D.in

正确答案:C

答案解析:这四个都是介词。responsible后面跟for。

6、Parkinson's Disease
1. 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 for sure what makes these nerve cells break down. But scientists are doing a lot of research to look for the 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. Tremor often starts in just one arm or leg or only on one side of the body. It may be worse when you are awake but not moving the affected arm or leg. It may get better when you move the limb or you are asleep. In time, Parkinson's affects muscles all through your body, so it can lead to problems like trouble swallowing or constipation(便秘) . In the later stages of the disease, a person with Parkinson's may have a fixed or blank expression, trouble speaking, and other problems. Some people also have a decrease in mental skills.
4. At this time, there is no cure for Parkinson'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 doctor may wait to prescribe medicines until your symptoms start to get in the way of your daily life. Your doctor will adjust your medicines as your symptoms get worse. You may need to take several medicines to get the best results.
You'll find it hard to move the way you want to ______.
【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 or blank expression

E.which may be the first symptom you notice

F.what causes Parkinson's disease

正确答案:A

答案解析:本题难度不大，带着题干信息词回文章定位，答案依据是文章第一段最后一句，Then you no longer have enough dopamine, and you have trouble moving the way you want to.谈到如果你没有足够多的多巴胺，行动就会变得困难，答案是A。

7、These paintings are considered by many to be authentic.【单选题】

A.faithful

B.royal

C.sincere

D.genuine

正确答案:D

答案解析:很多人都认为这些油画是真品。本题难度不大，考察的是单词的基础含义，干扰项干扰不强，authentic“真的，可靠的”，和genuine“真的，非伪造的”是同义词，sincere指“真诚”，最佳答案是D。

8、College Night Owls Have Lower Grades
College students who are morning people tend to get better grades than those who are night owls(晚睡的人), according to University of North Texas researchers.
They had 824 undergraduate(大学本科生的) students complete a health survey that in cluded questions about sleep habits and daytime functioning, and found that students who are morning people had higher grade point averages(GPAs) than those who are night people.
"The finding that college students who are evening types have lower GPAs is a very important finding, sure to make its way into undergraduate psychology texts in the near future, along with the research showing that memory is improved by sleep," study co - author Daniet J. Taylor said in a prepared statement.
"Further, these results suggest that it might be possible to improve academic performance by using chronotherapy (时间疗法) to help students retrain their biological clock to become more morning types," Taylor said.
The research was expected to be presented Monday at SLEEP, the annual meeting of the Associated Professional (专业的) Sleep Societies, in Baltimore.
In other findings expected to be heard at the meeting, University of Colorado researchers found a significant association between insomnia (失眠) and a decline in college students' academic performance.
The study included 64 psychology, nursing and medical students, average age 27. 4 years, who were divided into two groups—low GPAs and high GPAs.
Among those with low GPAs,69.7 percent had trouble falling asleep,53.1 percent experienced leg kicks or twitches (痉挛) at night, 65.6 percent reported waking at night and having trouble falling back to sleep, and 72.7 percent had difficulty concentrating during the day.
"In college students, the complaint of difficulty concentrating during the day continues to have a considerable impact on their ability to succeed in the classroom," study author Dr. James F. Pagel said in a prepared statement. "This study showed that disordered sleep has significant harmful effects on a student's academic performance, including GPAs."
The passage indicates that chronotherapy can be used to help people to ______. 【单选题】

A.forget their troubles

B.improve their image

C.better their social relationships

D.readjust their biological clock

正确答案:D

答案解析:本题难度不大，答案依据比较明显，答案依据是文章第四段，谈到通过时间疗法可以帮助学生重新调整生物钟，变成早起型，回来看选项，D项和原文句意相符，是答案。

9、Reduce Packaging
Pressure increased recently on British supermarkets and retailers to reduce packaging as part of an anti - waste campaign. The campaign was initiated by The Independent newspaper. Britain generates 4.6 million tons of household waste every year by packaging.
Dozens of people have expressed anger at the excess of plastic wrapping. Campaigners have called on Britain to learn from other European countries, In Belgium, when you buy something in a plastic or glass container, you make a deposit. When returned bottles are put in a vending machine 自动售货机, the deposit is refunded. Environmentalists warn that Britain lags behind in this.
There were reports of growing unease among consumers over the amount of packaging they have to deal with. Trade standards officers also object to excessive packaging. ____
In response to a campaign by Britain's The Independent newspaper, leading supermarkets have pointed to various initiatives to win the public confidence. tons of cardboard a year by switching to reusable plastic crates 装货箱 for transporting its fresh produce.
But campaigners said retailers and the government could learn much from anti - waste practices on the Continent. In Sweden, non - recyclable batteries have been taxed since 1991 to encourage a switch to alternatives. This has resulted in a 74 percent reduction in sales. In Germany, plastic bags are unheard of in supermarkets and deposits are paid for reusable plastic and glass beverage bottles.
【单选题】

A.If a product is over packaged, don't buy it.

B.In Belgium, when you buy something in a plastic or glass container, you make a deposit.

C.This is because too much padding can give buyers a false impression of what they are buying.

D.This has resulted in a 74 percent reduction in sales.

E.Tesco said it was saving 112,000 tons of cardboard a year by switching to reusable plastic crates (装货箱) for transporting its fresh produce.

F.The campaign was initiated by The Independent newspaper.

正确答案:C

答案解析:本题有一定难度。要认真阅读文章，理解好句意，判断出叙述逻辑，可使用排除法和代入法。本题的上句谈到了贸易标准部门的官员反对过度的包装，由此可以推断此处应该进行解释，回来看选项，可以发现C项合适，把C项代入文中，符合上下文逻辑，是答案。

10、Many cities have restricted smoking in public places.【单选题】

A.limited

B.allowed

C.stopped

D.kept

正确答案:A

答案解析:很多城市限制在公共场所吸烟。restricted指“限制”，和limited“限制”是同义词，stopped指“阻止，停止”，有一定的干扰性，有考生选C，但最佳答案只能是A。