WHILE reports of a unique form of flu---swine flu---were appearing around the world,there was the question:Is this the next big one?Is this the new virus that will kill millions,like the pandemics(流行疾病)of 1918,1957 and 1968?
Well,even the scientists’crystal ball may not help them come up with an answer that quickly.“It’s hard to predict,”said Anne Schuchat,liuxing PhD,of the United States Centers for Disease Control and Prevention.“We need to be prepared for change.”
The center of the new virus is Mexico,where it has been blamed for 152 deaths and an estimated 2,000 cases,since April 13.Health officials around the world say they are investigating suspected cases in people who have been to Mexico.The level of concern rose even more when the US declared a public health emergency on Sunday.
The flu makes people feel like they have a serious cold.In more serious cases,it may bring death.Flu viruses can be carried by humans,birds,and other animals and transmitted among themselves.It is believed that rotating flu viruses revisit humans in intervals and can leave a huge number of casualties.(伤亡者)
Swine flu contains genetic elements from humans and birds as well as from pigs.It seems to spread among people more easily than past swine flus,which sometimes jumped from pigs to people.
Pigs are considered particularly susceptible(易受影响的)to both bird and human viruses.They are a likely place for genetic change that might lead to a new form of flu that spreads easily.
1. The passage is mainly about___________.
A.measures to control swine flu |
B.different opinions about dealing with swine flu |
C.people’s reaction to swine flu |
D.a brief introduction to swine flu |
A.Swine flu doesn’t have any effect on the US |
B.Genetic elements make a change when pigs are harmed by bird and human viruses |
C.Scientists know how to deal with swine flu |
D.Swine flu is transmitted from pigs to humans |
A.Swine flu can cause deaths |
B.It is not the first time that swine flu has appeared |
C.The number of suspected cases is increasing |
D.Pigs take revenge on Mexicans because many of pigs are killed |
相似题推荐
【推荐1】According to the CDC, 1 in 110 children have some form of autism(自闭症). While symptoms vary from case to case, there are two major characteristics of the disorder. The patient experiences a deficit in social communication and social interaction across multiple contexts.
There are many treatments available. Each patient is different, and there is no single treatment that is equally effective for all individuals with autism.
Music therapy has many health benefits on people. Studies have found that music therapy can help people reduce depression, calm anxiety, find comfort and ease muscle tension. This is not surprising, as music affects the body and mind in many powerful ways.
Music therapy is effective for autistic patients of all ages, but it has a particularly profound impact on children. A study by Kim, Wigram, and Gold found that autistic children were more responsive to their music therapy sessions than to their play sessions.
Music therapy is a safe, positive, and effective means of reaching out to autistic individuals. Music therapists draw from an extensive range of music activities to ensure the best effect.
A.Through music, the children became more expressive, joyful, and socially engaged |
B.For example, the therapist and patient might compose songs to help express feelings |
C.It is especially effective to help children with autism in the development of life skills. |
D.The patient also experiences restricted, repetitive patterns of behaviors, interests and activities. |
E.However, many studies note the music therapy has a positive effect on children with autism disorders. |
F.It is ideal to begin interventions early in an individual’s development in order to ensure their highest potential. |
【推荐2】I’m ten years old, away at my first sleepover camp. The rest of the girls in my house are trying to put together a short humourous performance for the camp’s show, and l can see that it isn’t going to come together the way they imagine.
It wasn’t until decades later that I learned my uniqueness has a name: autism. My diagnosis (诊断) at 46 was just as the process like discovering a piece of my brain, picking it up, and putting it in place.
Today, I am an enterpriser. My firm is called Liberty Co., meaning that facing autism brings us freedom. My goal is to increase the population of autistic individuals in the workplace.
A.For the first time, I felt whole |
B.I have a sixth sense about things like that |
C.I feel lonely, but being lonely is better than being fooled |
D.There is something about me that most people consider “different” |
E.It provides a chance for me to be an advocate for people with autism |
F.For many who have it, social interactions have to be learned as opposed to born with |
G.And this seems to wear out the patience of my friends and even the adults around me |
【推荐3】A year ago I lost my wonderful friend and colleague Rachael Bland. She died at the age of just 40, two years after being diagnosed with breast cancer.
Her death knocked me for six. I knew it was coming and we had talked about it—but nothing prepared me for actually not having her in my life every day. The thing was, while we only knew each other for a short period of time, she had a huge impact on me. When I got diagnosed with stage 4 lung cancer, I made a whole new group of friends. Rachael was up there with the best of them. She understood exactly what I was going through, she shared my fears and was always there at 3 am to reassure me. She was my rock.
After Rachael died, I had a nervous breakdown. I hit numerous brick walls in the weeks and months that followed. My cancer was progressing and I fell into a dark place. I pushed it away but ignored the terror of it all and inevitably it all came crashing down around me. Great Sorrow hit me when I least expected. Her death felt like a bad dream. The emotional bit aside, one of the things I found really hard was to actually accept she died.
Rachael hoped that by starting the conversation around cancer, she could help other women avoid getting cancer too. It was her absolute determination and bravery at helping to break down taboos (禁忌) that will live on for generations to come.
Rachael showed me how to live with cancer. Even in her darkest days she was determined to show that cancer didn’t get to take over. She helped remind me to get busy living with cancer rather than worry about dying of it. She was in the bottom of my heart forever.
1. What does the underlined sentence in Paragraph 2 mean?A.I was beaten six times. |
B.Her death gave me the strength. |
C.She was knocked down and died. |
D.Her death made me very shocked. |
A.She wanted to end up her life. |
B.She couldn’t stand the pain of cancer. |
C.She had been suffering from nightmares. |
D.She was too sorrowful to accept Rachael’s death. |
A.To help women fight against fear. |
B.To assess women’s conversational skills. |
C.To prevent other women from getting cancer. |
D.To inspire sick people to hope for their future. |
A.Optimistic. | B.Weak. |
C.Humorous. | D.Demanding. |
The new system of“self-driving”chairs is designed to detect when someone at the front of the queue is called, and automatically move everyone else one step forward in line. The new invention is shown off in a company video, which shows a busy restaurant with customers waiting outside.
In the video, diners are sitting in a row of chairs, but will not have to stand when the next hungry diner is called to a table. Instead, the chairs, equipped with autonomous technology that detects the seat ahead, move along a path toward the front of the line. When the person at the front of the queue is called, the empty chair at the front can sense it is empty and so moves out of pole position.Cameras on the remaining chairs then sense the movement and follow automatically.
The system, which is similar to the kind used in Nissan’s autonomous vehicle technology,will be tested at select restaurants in Japan this year, Nissan said. “It appeals to anyone who has queued for hours outside a crowded restaurant: it eliminates the boredom and physical pain of standing in line,”Nissan added.
Although Tokyo has some 160,000 restaurants, long queues are not uncommon. Chosen restaurants that meet the criteria will be able to show the chairs outside their restaurants next year. Nissan also released a short video showing the chairs being used in an art gallery, moving slowly in front of the various paintings to let viewers appreciate the art without the need to stand up.
1. What can we know about the “self-driving”chairs from the text?
A.They are in hot demand like iPhones. |
B.They are intended for queueing diners. |
C.They are the invention of a car company. |
D.They are completely different, from vehicle technology. |
A.Pole position. |
B.Autonomous technology. |
C.Cameras equipped on them. |
D.Sensors equipped along the path. |
A.rids | B.ignores |
C.steals | D.hides |
A.Queueing is a rare scene outside Japanese restaurants. |
B.“Self-driving” chairs are the most useful in art galleries. |
C.Japanese people prefer eating in restaurants to at home. |
D.“Self-driving”chairs haven’t been in official use in restaurants. |
【推荐2】The clothes you wear.The food you eat.The color of your bedroom walls.Where you go and how you get there.The people you hang around with.What time you go to bed.What do these things have in common?You’re asking.They’re just a few examples of many hundreds of things that your parents controlled for you when you were a child.
As a kid,you didn’t have a say in very much that went on;your parents made decisions about everything from the cereal you ate in the morning to the pajamas you wore at night.And it’s a good thing,too-kids need this kind of protection and assistance because they aren’t mature enough to take care of themselves and make careful decisions on their own.
But finally,kids grow up and become teens.And part of being a teen is developing your own identity(身份认同)---one that is separate from your parents’.But as you change and grow into this new person who makes your own decisions,your parents have a difficult time adjusting(调整).They aren’t used to the new you yet---they only know you as the kid who had everything decided for you and didn’t mind.
In many families,it is this adjustment that can cause a lot of fighting between teens and parents.And issues like the type of friends you have or your attitudes to partying can cause bigger quarrels,because your parents still always want to protect you and keep you safe,no matter how old you are.
The good news about fighting with your parents is that in many families the arguing will lessen as parents get more comfortable with the idea that their teen has a right to certain opinions.It can take several years for parents and teens to adjust to their new roles,though.In the meantime,focus on communicating with yourparents.
Sometimes this can feel impossible---like they just don’t see your point of view and never will.But talking and expressing your opinions can help you gain more respect from your parents and you may be able to reach compromises(和解)that make everyone happy.For example,if you are willing to clean your room in order to stay out an hour later,both you and your parents walk away with a good deal. Keep in mind, too, that your parents were teens once and that in most cases,they can relate to what you’re going through.
1. In Paragraph 2.the author_______.A.complains that parents control kids too much |
B.proves that kids have no right to give their opinions |
C.describes how carefully parents look after kids |
D.explains parents control kids for protection and assistance |
A.parents aren’t used to losing control of kids |
B.teens like to have everything decided for them |
C.parents get angry at teens not respecting them |
D.teens are eager to develop their own identity |
A.prevent them from having their own ideas |
B.protect them from being hurt |
C.make them respect parents in the family |
D.make sure that children have a good future |
A.What do parents control their children for? |
B.When do parents take care of their children? |
C.How do I get rid of my parents’control? |
D.Why do I fight with my parents so much? |
【推荐3】A new study suggests water may have existed on Mars much more recently than past evidence (证据) has shown. The research is based on data collected by the Chinese rover, Zhurong, which arrived on the planet in 2021.
Today, Mars has a cold, desert climate. But past studies have provided evidence that ancient Mars had large amounts of water. A study suggested that 4.3 billion years ago, Mars likely had an ocean covering nearly half of the planet’s northern hemisphere.
There are different theories for what caused large amounts of water to disappear from Mars. The most likely explanation is that the liquid escaped when the planet’s air thinned over time. This turned the surface into a frozen desert about 3 billion years ago.
In the new study, the Chinese rover observed salt-rich sand dunes (沙丘) on the surface. The dunes contained breaks and small hills, which provide evidence that the land had frozen and then melted (融化). The melting could have happened as recently as a few hundred thousand years ago, the study said. The researchers believed the dunes were likely formed sometime after 1.4 million to 400,000 years ago, possibly even more recently. Conditions during that period were likely similar to how things are on Mars today.
The researchers said small openings filled with salty water were created by melting frost or snow. The team ruled out wind as a cause, as well as frost made of carbon dioxide, which makes up most of the Martian atmosphere.
“The rover has now provided evidence that there may be a wider distribution of this process on Mars than previously identified,” said Mary Bourke. She added that although the evidence suggests small amounts of water, it could still be important in identifying environments that could support life.
1. What can we infer about the lost water on Mars from paragraph 3?A.It disappeared into space. | B.It is blown away gradually. |
C.It still remains underground. | D.It is buried in a frozen desert. |
A.Melted frost and snow. | B.Thin air on Mars. |
C.Some sand dunes being rich in salt. | D.The frost made from carbon dioxide. |
A.To measure the role of wind. | B.To find areas suitable for life. |
C.To study the frozen and melted areas. | D.To figure out the history of dunes. |
A.Chinese rover finds water on Mars | B.There used to be rich water on Mars |
C.Water is actually more widespread on Mars | D.Chinese rover makes a new discovery on Mars |
【推荐1】For some people, there’s no better companion than mans best friend-a dog. This four-legged pet can bring comfort and joy and provide much- needed exercise for you when it needs walkies! This probably explains why dog ownership increased last year because people spent more time at home during he CovID-I9 lockdown.
However, as demand for a new dog increased, so did the price tag. Popular breeds, such as Cockapoos and Cocker Spaniels, saw even sharper price increases, and puppies have been selling for $3,000 or more.
Animal welfare charities fear that high prices could encourage puppy farming, smuggling (走私) or dog theft. An investigation found some breeders have been selling puppies and kittens on social media sites--something charities have called “extremely irresponsible”.
But despite some new owners purchasing a dog legally, maybe from a rescue center or registered breeder, they’ve proved to be ill-prepared for life with a new pet, and the pet itself has found it hard to come to terms with life in a new home.
Looking to the future, there are concerns about the welfare of these much-loved pets. Lan Alkin manager of the Oxfordshire Animal Sanct uary in the UK, notes: “At the moment, the dogs are having a great time, but separation anxiety could still surface when people go back to work.” And Cliare Calder from the UKs Dogs Trust rescue charity says, “The economic situation also means that some people may find they can’t afford to look after a dog.” The message is not to buy a dog in haste and to pick one that fits into our lifestyle.
1. The greater demand for dogs can cause the following problems except ________.A.illegal trade of dogs | B.less dog farming |
C.high prices of dogs | D.online sale of dogs |
A.Fit in with | B.Go in for | C.Make up for. | D.End up with |
A.Despite the problems, dogs are living happily. |
B.The writer has a positive attitude towards dogs future. |
C.Experts are worried that dogs will be unaffordable to people. |
D.The writer advises people to think twice before keeping dogs as pets. |
【推荐2】Just a couple of hours ago, I was on the plane, ready to fly home from London. The flight had been delayed by a few hours so it felt good to be so close to take-off. I had my iPod in place and a new book to read. Then, over the loudspeaker came the pilot’s voice: “The ground crew has found a metal instrument in one tire. We regret that we must cancel this flight.”
The passengers’ reactions that announcement led to were interesting. One man close to me began to argue with a flight attendant. A couple in another row complained loudly. A businessman in a black suit actually kicked the seat in front of him. Yet some passengers responded differently. An elderly gentleman smiled as he helped others take their bags down from the overhead compartments. A teenager, rather than trying to rush off the plane like most of the other passengers, stopped to help a woman with a disability. The lady sitting next to me laughed and said: “Hey, it’s not the end of the world,” before she made a call to her kids and shared her adventure with them, the wisest among us who has a remarkable ability to maintain grounded(稳定的) when times get tough.
No life is perfect; mine certainly isn’t. We all must face challenges, both large and small. You and I have the power to choose to rise above the external circumstances(外部环境). We always have the choice to be strong and kind when things fall apart.
That’s grace under pressure. My seatmate was right — things could have been so much worse. Anyway, I am safe. I have my health. I have two wonderful children. I have work I love and so much to be grateful for. Sure I now have to wait a few hours to catch the next flight home.
1. What caused the passengers’ different reactions?A.The loudspeaker. | B.The delay of the flight. |
C.The ground crew’s fault. | D.The pilot’s announcement. |
A.A teenager helping the disabled. | B.An old man taking bags down. |
C.A man in a black suit. | D.A man close to the author. |
A.She assisted a disabled woman. | B.She made a phone call to her family. |
C.She helped others carry their luggage. | D.She told moving stories to her children. |
A.Our life is full of ups and downs. |
B.It is natural to be scared under pressure. |
C.We should help each other in times of difficulty. |
D.We should be positive and calm when life is hard. |
【推荐3】When I was small and my grandmother died, I couldn’t understand why I had no tears. But that night when my dad tried to cheer me up, my laughs turned into crying,
So it came as no surprise to learn that researchers believe crying and laughing are controlled by the same part of the brain. Just as laughing has many health advantages, scientists are discovering that so does crying.
Whatever helps us to reduce pressure is important to our emotional health, and crying seems to work well. One study found that 85 percent of women and 73 percent of men report feeling better after crying.
Besides, tears attract help from other people. Researchers agree that when we cry, people around us become kinder and friendlier and they are more ready to provide support and comfort. Tears also enable us to understand our emotions better, sometimes we don’t even know we’re very sad until we cry. We learn about our emotions through crying, and then we can deal with them.
Just as crying can be healthy, not crying-holding back tears of anger, pain or suffering-can be bad for physical health. Studies have shown that too much control of emotions can lead to high blood pressure, heart problems and some other illness. If you have a health problem, doctors will certainly not ask you to cry. But when you feel like crying, don’t fight it. It’s a natural, healthy and emotional response.
1. Why didn’t the author cry when her grandmother died?A.Because her father did not want her to feel too sad. | B.Because she did not love her grandmother. |
C.Because she was too shy to cry at that time. | D.The author doesn’t give the explanation. |
A.there are two ways to keep healthy |
B.emotional health has a close relationship to physical health |
C.crying and laughing play the same roles |
D.crying does more good to health than laughing |
A.Crying is the best way to get help from others. |
B.Fighting back tears may cause some health problems. |
C.We will never know our deep feelings unless we cry. |
D.We must cry if we want to reduce pressure. |
A.Why We Cry. | B.How to Keep Healthy. |
C.Power of Tears. | D.New Scientific Discovery. |
A.Positive. | B.Negative. | C.Touched. | D.Upset. |
【推荐1】It should be one of the main goals in today’s society to reduce plastic consumption (消耗). Though many believe recycling will solve the problems, and continue using plastic, it’s actually the opposite. In 2013, 254 million tons of trash were produced in the U.S alone, and only around 30% was recycled. This means the rest ended up in a landfill and will stay there for up to 1,000 years.
Recently, China has stopped importing trash from all over the world. Before this, over 30% of the world’s waste would end up in China causing a popular belief that Asian countries are those responsible for creating the majority of the waste in the world. Now, Asian countries, including Vietnam and Thailand, are looking for new ideas to avoid plastic. One of those ideas is a new, eco-friendly way to pack their goods by avoiding plastic packaging.
One of Perfect Homes Chiangmai’s team members noticed a creative way to reduce plastic that a supermarket called Rimping Supermarket was using and decided to shoot pictures of their shelves with his phone. Little did he know that people all around the world would absolutely love this idea. “I just dropped in to get a few items while we were waiting to sign some contracts (合同) with our lawyer, who was delayed. When I noticed the vegetables wrapped in banana leaves and simply liked the idea. So I took a few pictures and posted them online,” he said.
With more than 3.5 million views and over 17 thousand shares, the idea became something people can encourage more supermarkets to carry out.
Some have noticed that not everything on the shelves is completely plastic-free, to which the supermarket responded that they are taking one step at a time, but it’s not that easy. Many products come to the supermarkets pre-packaged and many companies are interested in wrapping their produce in plastic since it is the cheapest and the easiest option.
It’s now up to the shoppers to show the supermarket which they prefer. If everyone chooses the banana leaf packaging, they will probably stop stocking the items in plastic.
1. What can we infer from paragraph 1?A.Recycling has failed to solve the plastic problem. |
B.Approaches to mountains of trash lack efficiency. |
C.Trash shouldn’t be disposed of by burying alone. |
D.Reducing plastic consumption is just impossible. |
A.Rubbish export. | B.Acquiring technology. |
C.Leaf packaging. | D.Convincing shoppers. |
A.Disapproving. | B.Pessimistic. | C.Skeptical. | D.Supportive. |
【推荐2】The different parts of a health care system have different focuses. A hospitals stroke(中风) unit monitors blood flow in the brain. The cardiac unit is interested in that same flow, but through and from the heart. Each collection of equipment and data is effective in its own field. Thus like the story of blind men feeling an elephant, modern health care offers many separate pictures of a patient, but rarely a useful united one.
On top of all this, the instruments that doctors use to monitor health are often expensive, as is the training required to use them. That combined cost is too high for the medical system to scan regularly for early signs of illness so patients are at risk of heart disease or a stroke.
An unusual research project called AlzEye, runby Moorfields Eye Hospital in London, in cooperation with University College London (UCL)may change this. It is attempting to use the eye as a window through which signals about the health of other organs could be discovered. The doctors in charge of it. Siegfried Wagner and Pearse Keane, are studying Moorfields database of eye scans, which offers a detailed picture of the health of the retina.(视网膜).
The project will go a step further:With the information about other aspects of patients health collected from other hospitals around England doctors will be able to look for more accurate signs of disease through eye scans.
The Moorfields data set has lots of linked cases to work with---far more than any similar project. For instance, the UK Biobank, one of the world’s leading collections of medical data about individual people, contains 631 cases of a major cardiac adverse event”. The Moorfields data contain about 12, 000 such. The Biobank has data on about 1,500 stroke patients. Moorfields has 11900. For the disease on which the Moorfields project will focus to start with dementia, the data set holds 15100 cases. The only comparable study has 86.
Wagner and Keane are searching for patterns in the eye that show the appearance of disease elsewhere int he body. If such patterns could be recognized reliably, the potential influence would be huge.
1. What does the author mean by referring to "the story of blind men feeling an elephant” Paragraph 1?A.The scanning process is complex. |
B.Modern health care system has its limitations. |
C.The data collected from the units is not effective. |
D.Different health care units have many similarities. |
A.By examining one's body organs thoroughly. |
B.By helping doctors discover one's diseases of the eye. |
C.By identifying one's state of health through eye scans. |
D.By comparing the eye-scan data from different hospitals. |
A.To criticize the repeating scanning process. |
B.To show the abundant resources to study on. |
C.To claim Moorfields's top place among London hospitals. |
D.To explain the competition between Moorfields and the Biobank. |
A.Eye scanning: a cure for diseases. |
B.Huge breakthrough in scanning technology. |
C.The importance of building eye scan database. |
D.A picture of the eye---door to your health condition. |
【推荐3】Chocolate could soon be a thing of the past, after scientists warned that the cacao plant, from which chocolate is made, could be extinct within 32 years.
Over half of the world’s chocolate comes from just two countries in West Africa—Cote d’Ivoire and Ghana—where the temperature, rain, and humidity provide the perfect conditions for cacao to grow. But the threat of rising temperatures over the next three decades caused by climate change, is expected to result in a loss of water from the ground, which scientists say could upset this balance.
According to the related data, a temperature rise of just 2.1℃ could spell an end for the chocolate industry worldwide by 2050. Farmers in the region are already considering moving cacao production areas thousands of feet uphill into mountainous area—much of which is currently preserved for wildlife. But a move of this scale could destroy ecosystems that are already under threat from illegal farming and deforestation.
Part of the problem, according to Doug Hawkins, is that cacao farming methods have not changed for hundreds of years. “Unlike other tree crops that have benefited from the development of modern, high yielding strains and crop management techniques to realize their genetic potential, more than 90% of the global cocoa crop is produced by small farms with unimproved planting material,” he said. “It means that we could be facing a chocolate decrease of 100,000 tons a year in the next few years.”
Now scientists at the University of California at Berkeley have teamed up with American candy company Mars to keep chocolate on the menu. Using the controversial(有争议的) gene-editing technology known as CRISPR they are trying to develop a type of the cacao plant capable of surviving in dryer, warmer climates. If the team’s work on the cacao plant is successful, it could remove the need for farmers in West Africa to relocate to higher ground, and perhaps even allow cacao to be grown elsewhere in the world.
1. What do we know about chocolate from the text?A.Chocolate will disappear from the menu 30 years later. |
B.Chocolate is mainly produced by African countries. |
C.Chocolate will not be produced by 2050 because of climate change. |
D.A new type of chocolate will be produced with the help of CRISPR. |
A.The damaged ecosystem. |
B.Water shortage caused by climate change. |
C.The threat from illegal farming. |
D.The changeable farming method. |
A.Objective. | B.Unconcerned. | C.Supportive. | D.Negative. |