题目
题型：不详难度：来源：
But do the masks really work? Is covering your nose and mouth the key to stopping the swine flu? To find out the truth, ABC’s reporter Sharyn Alfonsi talked with germ (细菌) expert Dr. Elaine Larsen. It turns out that when you sneeze (打喷嚏) the air coming out of your mouth at a speed of one hundred miles per hour carries germs which can travel anywhere around you and make people around you infected (被感染).
However, whether you become infected actually depends on the weather. As Sharyn reported, when you sneeze, the germs leave your body in small drops of water coming out of your mouth. If the weather is wet, the wet air will make the small drops bigger and heavier and they drop down towards our feet. If this happens, we won’t become infected. But if the air is dry, those small drops can float higher up, making it possible for them to touch someone else’s nose, mouth or their mask.
Larsen says the masks can stop the germs well but after a few hours, they start to get wet, holding a lot of germs they come across and causing you to breathe them in. The masks do work, but the key to stopping the germs is changing your masks often.
小题1:According to Para.1, in Mexico you can see that ____.
| A．the patients are treated in the open air |
| B．some doctors work in the street |
| C．people speak little to each other in the street |
| D．many people wear masks in the street |
| A．breathing | B．Speaking | C．touching others | D．sneezing |
| A．sick people will be infected |
| B．germs can spread very far |
| C．germs spread very quickly |
| D．few people will be infected |
| A．the mask will be old and worn out |
| B．you’ll love the feeling of wearing it |
| C．germs will be kept away from you |
| D．it will be easy for you to be infected |
| A．Keeping the masks dry. | B．Changing the masks often. |
| C．Choosing very thick masks. | D．Wearing big masks. |
答案
小题1:D
小题2:D
小题3:D
小题4:D
小题5:B
解析
试题分析：墨西哥的街道就像手术室，到处是戴口罩的人。戴口罩真的能阻挡猪流感吗？答案是肯定的。但如果一个口罩戴得太久，上面附着的细菌就会变得很多，很容易被吸入体内。所以一定要经常更换口罩。 小题1:细节理解题。根据第一段“If you were on the street in Mexico today you might think you were in an operating room，surrounded by doctors.You could see many concerned people with masks trying their best to stop the swine flu.”可知在墨西哥街头人们都戴口罩，答案是D
小题2:细节理解题。根据第二段“It turns out that when you sneeze the air coming out of your mouth at a speed of one hundred miles per hour carries germs which can travel anywhere around you and make people around you infected.”可知病菌是通过 打喷嚏传播的。 答案D
小题3:推理判断题。根据第三段“If the weather is wet，the wet air will make the small drops bigger and heavier and they drop down towards our feet.If this happens，we won"t become infected.”可推知在潮湿的天气里被感染的人会很少。 答案：D
小题4:细节理解题。根据最后一段“Larsen says the masks can stop the germs well but after a few hours，they start to get wet，holding a lot of germs they come across and causing you to breathe them in.”可知如果戴口罩时间长了，人也会由于将附在口罩上 的细菌吸入体内而被感染。 答案：D
小题5:细节理解题。根据最后一段The masks do work, but the key to stopping the germs is changing your masks often.可知佩戴口罩要经常换，选B
核心考点
试题【 If you were on the street in Mexico today you might think you were in an operat】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
Take a walk outside and you are a target for “man’s best friend. ” Hundreds of dog-bite victims visit US emergency rooms daily. Many bites are terrible. To avoid the dogs in your neighborhood, you might want to hike into the desert or the woods. There, you run the risk of bites from rattlesnakes, scorpions, and blood-sucking ticks. Not to mention bears, wolves, coyotes, and mountain lions.
Speaking of housing, watch out when you touch the corner of your house or garage. Shy but deadly, the black widow spider and the brown recluse spider make themselves comfortable in quiet areas of your closets or garage. One bite from either of them can make you very sick; occasionally, people die from such bites. Unfortunately, many people fear all spiders, not just the few dangerous ones. They squash them or run from them at first sight, not realizing that most spiders are actually beneficial to man.
If you’re concerned about bites, don’t forget about rabid(患有狂犬病的) animal bites. Any warm-blooded animal can get infected with rabies. Although humans in the US rarely get attacked by rabid animals, the disease is painful and dangerous. You will most likely die if you are not treated properly within 48 hours of being bitten.
小题1: How does the author introduce the topic of this passage?
| A．By asking questions. | B．By giving examples. |
| C．By offering suggestions. | D．By doing experiments. |
| A．Bedbugs | B．Dogs | C．Coyotes | D．Scorpions |
①rattle snakes ②bedbugs ③bears ④spiders ⑤rabid animals
| A．①④ | B．②③ | C．③⑤ | D．②④ |
| A．All spiders are dangerous and one bite from each of them can be very serious. . |
| B．The black widow spider is actually beneficial to humans. |
| C．Spiders always make themselves comfortable in quiet place in your house. |
| D．One should squash a spider at first sight to keep safety. |
| A．No matter what kind of animal bites you, there is no danger at all. |
| B．One should treat rabid animal bites properly within 2 days. |
| C．Humans in the US can be bitten by rabid animals frequently. |
| D．Hundreds of rabid animal-bite people visit emergency room daily in the US. |
60 times a minute for 60 minutes is 3,600 times. What physical thing can most of us do 3,600 times in one hour? Blink? Maybe. Tap our fingers on the desk? No. Jump up and down? Certainly not! But our heart keeps beating, hour after hour. Every day, it pumps almost 2,000 gallons of blood through our blood vessels(血管). It takes you about five years to drink 2,000 gallons of water.
And, unlike your knees or your back, your heart does all this work without ever complaining（抱怨）! You never know that it’s even there. Your heart is such a reliable “silent partner” that people forget to care for it. For many, the first indication（迹象）that their heart isn’t working properly is a serious heart illness! Over 650,000 Americans die of some kind of heart disease every year. Cancer kills 560,000, stroke kills 143,000, and accidents kill 118,000 Americans annually.
Like accidental deaths, many heart disease-related deaths can be avoided if people simply follow the advice of the experts. Unfortunately, most people seem to listen to a little voice in their head that says, “It won’t happen to me. ” So these people keep on smoking and drinking. They continue to eat too much meat. And their only “exercise” is getting off the sofa to get something out of the fridge. Please follow the following steps to keep your heart healthy.
小题1:The text is most probably taken from a (an) __________.
| A．art book | B．science fiction |
| C．healthy magazine | D．psychology book |
| A．Blink. | B．Jump. | C．Finger tap. | D．Heart beat. |
| A．Accidents can be the biggest “killer” in America every year. |
| B．In America, heart disease causes the highest death rate annually. |
| C．Cancer causes more threat than any other diseases for Americans. |
| D．Recently, nobody died of stroke or heart disease in America. |
| A．our healthy hearts work with many complains as our knees. |
| B．our healthy hearts can pump 3,600 gallons of blood everyday. |
| C．our healthy hearts are smaller than our fists. |
| D．our healthy hearts can beat 60 times in one hour. |
| A．Some tips for keeping a healthy heart. |
| B．Some suggestions for avoiding accidental deaths. |
| C．Some reasons for doing regular exercise. |
| D．Some exercise for keeping a healthy lifestyle. |
Malaria starts suddenly, with violent chills, which are soon followed by an intense fever and, often, headaches. As the parasites multiply, they take over the entire body. Malaria parasites live by eating the red blood cells they infect. They can also attach themselves to blood vessels in the brain. If it doesn"t kill you, malaria can happen again and again for years. The disease passed on to humans by female mosquitoes infected with one of four species of parasite. Together, the mosquito and the parasite are the most deadly couple in the history of the earth—and one of the most successful. Malaria has five thousand genes, and its ability to change rapidly to defend itself and resist new drugs has made it nearly impossible to control. Studies show that mosquitoes are passing on the virus more frequently, and there are more outbreaks in cities with large populations. Some of the disease"s spread is due to global warming.
For decades, the first-choice treatment for malaria parasites in Africa has been chloroquine, a chemical which is very cheap and easy to make. Unfortunately, in most parts of the world, malaria parasites have become resistant to it. Successful alternatives that help prevent resistance are already available, but they have been in short supply and are very expensive. If these drugs should fail, nobody knows what would come next.
小题1:According to paragraph 1, many people don"t seek care because___.
| A．they can remain unaffected for long |
| B．it is unusual to seek care |
| C．they are too poor |
| D．there are too many people suffering from the disease |
| A．have to kill female mosquitoes |
| B．have ability to defend parasites |
| C．have their red blood cells infected |
| D．have sudden fever, followed by chills |
| A．Its outbreaks in cities with large populations. |
| B．Its ability to pass on the virus frequently. |
| C．Its resistance to global warming. |
| D．Its ability to defend itself and resist new drugs. |
| A．no drugs have been found to treat the disease |
| B．the alternative treatment is not easily available to most people |
| C．malaria has developed its ability to resist parasites |
| D．nobody knows what will be the drug to treat the disease |
| A．How can we know one is suffering from malaria? |
| B．How many people are killed by malaria each year? |
| C．Why are there so many people suffering from malaria? |
| D．What has been done to keep people unaffected for long? |
In the early 16th century, people thought that dirt on the skin was a means to block out disease, and washing off dirt with hot water could open up the skin and let ills in. A particular danger was thought to lie in public baths. By 1538, the French king had closed the bath houses in his kingdom. So did the king of England in 1546. Thus began a long time when the rich and the poor in Europe lived with dirt in a friendly way. Henry IV, King of France, was famously dirty. Upon learning that a nobleman had taken a bath, the king ordered that, to avoid the attack of disease, the nobleman should not go out.
Though the belief above was longlived, dirt has no longer been regarded as a nice neighbor ever since the 18th century. Scientifically speaking, cleaning away dirt is good to health. Clean water supply and hand washing are practical means of preventing disease. Yet, it seems that standards of cleanliness have moved beyond science since World War Ⅱ.Advertisements repeatedly sell the idea; clothes need to be whiter than white, cloths ever softer, surfaces to shine. Has the hate for dirt, however, gone too far?
Attitudes to dirt still differ hugely nowadays. Many firsttime parents nervously try to warn their children off touching dirt, which might be responsible for the spread of disease. On the contrary，Mary Ruebush，an American immunologist(免疫学家)，encourages children to play in the dirt to build up a strong immune system. And the latter position is gaining some ground.
小题1:The kings of France and England in the 16th century closed bath houses because ________.
| A．they believed disease could be spread in public baths |
| B．they thought bath houses were too dirty to stay in |
| C．they lived healthily in a dirty environment |
| D．they considered bathing as the cause of skin disease |
| A．Approving. | B．Afraid. | C．Curious. | D．Uninterested. |
| A．By providing examples. |
| B．By making comparisons. |
| C．By following the order of importance. |
| D．By following the order of time. |
| A．To stress the role of dirt. |
| B．To introduce the history of dirt. |
| C．To present the change of views on dirt. |
| D．To call attention to the danger of dirt. |
The study, which began with a self-administered questionnaire taken between 1983 and 1989, asked more than 80,000 radiologic technologists aged 22 to 92 questions about age, height, weight and smoking behavior.
BMI (body mass index) was calculated, with a BMI of 30 to 34.9 being considered obese, and 35 and over being very obese. Smoking behavior was analyzed by looking at a person"s tobacco consumption level, number of years smoked, and current smoking status. Researchers then followed participants through December of 2002, noting the number of deaths that occurred.
The study involved researchers from the National Cancer Institute, the University of Minnesota and the American Registry of Radiolegic Technologists.
Key Findings:
20 percent of obese adults in the United States smoke.
Obese smokers face a greater risk of death from cancer and circulatory disease.
Current smoking is a greater risk factor for death by cancer than obesity is, generally speaking.
The higher a person"s pack-years (number of packs smoked per day times the number of years smoked) are, the greater the risk of death.
Men and women of all ages faced an elevated risk of death due to circulatory disease as BMI increased. And for those who were both obese and currently smoking, risk of circulatory disease increased 6 to 11 times under the age of 65, as compared to their never-smoking, normal weight counterparts.
While it"s not surprising that obesity coupled with smoking is a recipe for trouble, it is important to highlight this growing health concern in America today.
Taking Charge of Your Health
Making healthy choices can be difficult when we"re constantly exposed to products that are dangerous to our health, but it"s not impossible. With education and some motivation, we all have the ability to make lasting changes for the better. If you"re an overweight smoker worried about gaining weight due to quitting, take heart. It"s never too late to change your course and even reduce damage to some extent.
小题1:60. What is the American Journal of Preventive Medicine?
| A．An medical institute. | B．A research center. |
| C．A medical magazine | D．A TV station |
| A．Obese smokers are less likely to suffer from cancer. |
| B．Obese smokers are more likely to suffer from cancer. |
| C．Obese smokers tend to gain fewer body mass index. |
| D．Obese smokers tend to get heavier than those who never smoke. |
| A．easy and possible | B．difficult and impossible |
| C．easy ant worthwhile | D．difficult but worthwhile |
| A．To inform the readers of the findings about obese smoking. |
| B．To warn the readers of the danger of obese smoking. |
| C．To tell us what obese smoking is. |
| D．To call on the obese smokers to quit smoking. |
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