March 21 has been declared World Sleep Day, a time to recognize and celebrate the value of sleep. Many sleep experts hope it will be a wake-up call.
According to a poll (民意调查）by the National Sleep Foundation, nearly 4 in 5 Americans don’t get as much sleep as they should during the workweek. On average, adults are thought to need at least eight hours of sleep a night, although some can manage with less and some won’t do well without more. But the survey found that, on workdays, only 21% of Americans actually get a full eight hours of sleep, and another 21% get less than six.
To many of us, the thought of spending more time sleeping is, well, a big yawn. On the other hand, the thought of being smarter, thinner, healthier and more cheerful has a certain appeal. And those are just a few of the advantages that can be ours if we consistently get enough sleep, researchers say. Also on the plus side: We’re likely to have better skin, better memories, better judgment, and, oh, yes, longer lives.
“When you lose even one hour of sleep for any reason, it influences your performance the next day,” says Dr. Alon Avidan, director of the UCLA Sleep Disorders Center.
A study published last year found the same to be true even of children. When kids aged 8 to 12 slept for just one hour less for four nights, they didn’t function as well during the day.
But sleeping has an image problem. “We see napping or sleeping as lazy,” says Jennifer Vriend, a clinical psychologist in Ottawa, Canada, and the leading author of the study with children. “We put so much emphasis on diet, nutrition and exercise. Sleep is in the back seat.” In fact, she adds, no matter how much we work out, no matter how well we eat, we can’t be in top physical shape unless we also get plenty of sleep.
The underlined part in Paragraph 1 means _____.
| A．To wake up the sleepers |
| B．To draw people’s attention |
| C．To serve as a morning call |
| D．To declare the special day |
From Paragraph 3 we can infer that _______
| A．Being healthier is one of the advantages for us |
| B．Sleeping has nothing to do with one’s expectations |
| C．Spending more time on sleeping is a waste of time |
| D．Enough sleep is the guarantee of the appealing things |
What Jennifer Vriend said in the last paragraph implies that _______.
| A．Sleeping is an image problem |
| B．People care little about sleeping |
| C．Lazy people tend to sleep long |
| D．Sleeping is only part of our life |
What is the purpose of the passage?
| A．To talk about people’s sleeping problems. |
| B．To provide an investigation result of sleeping. |
| C．To arouse the awareness of enough sleeping. |
| D．To stress the function of sleeping at night. |
Dear College Dean,
It is my understanding that this college has received a large donation to be used to enhance (improve) the quality of life for students: expand the bookstore or add computers to the computer lab. It is the tradition of this school to promote education and to be the pioneer of new technology. That is why I strongly argue in favor of the addition of more computers to the computer lab.
Although expanding the campus bookstore to include CDs, gifts, and a snack bar will give a nicer look to the college, we have to think about a greater goal and a more practical way to enhance the quality of life for students. What do we .want for our students and our college? Do we want our college to be known as a place with a great bookstore where you can find CDs and gifts, or as a place where the students can explore and research in their field using the best tools provided by technology? In addition, there are already several snack bars on campus, and there are music stores nearby, so students do not depend on the college bookstore for these things.
We live in a highly technological world and computers play an increasingly important role in how we live. As a learning institution, this college has the responsibility to offer its students the best technology to help them prepare for their future. Many students will be expected to be familiar with the latest software and other tools when they go on to work or to graduate school.
While they are in college, students find they are expected to use computers. Many professors expect students to use computers to do homework or to complete projects. Since students are competing for good grades, those who have limited access to computers are at a great disadvantage. Furthermore, being able to do projects using the computer enhances the process of learning.
If there are more computers, no more will students have to wait in line while scanning the room for an empty chair and computer.. No longer will they have to sit and wait while an outdated computer struggles to follow their commands. Having more new and faster computers available will enable students to finish their work more quickly.
The more computers are used in society, the more colleges will depend on them as a tool of teaching and learning. Making computers more available to students facilitates their learning process by making the process easier, more interesting, more engaging, and in the process enhancing their quality of life.
From the passage we can infer that .
| A．present computers in the college cannot meet the demands of the students |
| B．computers in the college will be updated to meet the students’ demands soon |
| C．the college has the responsibility to help the students to prepare for their future |
| D．it is also necessary to expand the college bookstore by using part of the donation |
In paragraph 4，the author mainly wants to tell us that .
| A．computers are beneficial to students’ academic(学业) success |
| B．computers are helpful to students competition for success |
| C．students find it convenient to do assignments by using computers |
| D．students wish to use the money to buy more advanced computers |
Which of the following shows the organization of the passage?
CP: central point SP: sub-point(次要点) P: point C: conclusion
Can you believe everything that you read? It seems as if every day, some new articles come out about a new discovery about this or that. For example, water is bad for you, or good for you. The answer depends on which scientific study has just come out. People cannot decide which food items are healthy, how pyramids were constructed, and why dinosaurs disappeared. When we look for answers we sometimes can believe persuasive researches and scientists. But how trustworthy are they really? Here are two examples of scientific hoaxes (骗局).
As far back as 1726, Johann Beringer was fooled by his fellow scientists into thinking he had made an amazing discovery. The fossils of spiders, lizards, and even birds with the name of God written on them in Hebrew were unlike anything that had been found before. He wrote several papers on them and was famous for those only to have it revealed that they were planted by jealous colleagues to ruin his reputation.
When an early human being was discovered in 1912, scientists at this time were wild with excitement over the meaning it had for the theory of evolution. There were hundreds of papers about this Piltdown man over the next fifty years until it was finally discovered to be a complex hoax. The skull (头骨) of a man had been mixed with the jawbone of an orangutan (猩猩) to make the ape (猿) man.
The next time you read the exciting new findings of a study of the best scientist, do not automatically assume that it is true. Even qualified people can get it wrong. Though we certainly should not ignore scientific research, we do need to take it with a grain of salt. Just because it is accepted as the truth today does not mean it will still be trustworthy tomorrow.What is the reason why Johann Beringer was fooled?
| A．His fellow scientists wanted to make fun of him. |
| B．His workmates are eager to become famous too. |
| C．These scientists made a mistake because of carelessness. |
| D．His colleagues was jealous of him and did so to destroy his fame. |
The excited scientists thought that this Piltdown man ________.
| A．was in fact a complex hoax |
| B．was a great scientific invention |
| C．contributed to the theory of evolution |
| D．had the skull like that of an ape |
What does the underlined phrase “with a grain of salt” in Paragraph 4 mean?
| A．Happily. | B．Generally. |
| C．Doubtfully. | D．Completely. |
What can we learn from the passage?
| A．Hebrew is probably a kind of language. |
| B．Truths of science will never be out of time. |
| C．People believe scientists because they are persuasive. |
| D．We are advised to believe famous scientists. |
Some futurologists have assumed that the vast upsurge(剧增) of women in the workforce may mean a rejection of marriage. Many women, according to this hypothesis, would rather work than marry. The converse(反面) of this concern is that becoming a multi-paycheck household could encourage marriage. In the past, only the earnings and financial prospects of the man counted in the marriage decision. Now, however, the earning ability of a woman can make her more attractive as a marriage partner. Data show that economic downturns tend to put off marriage because the parties cannot afford to establish a family or are concerned about rainy days ahead. As the economy comes to life, the number of marriages also rises.
The increase in divorce rates follows to the increase in women working outside the home. Yet, it may be wrong to jump to any simple cause-and-effect conclusions. The impact of a wife’s work on divorce is no less cloudy than its impact on marriage decisions. The realization that she can be a good provider may increase the chances that a working wife will choose divorce over an unsatisfactory marriage. But the reverse is equally plausible(似是而非的). Tensions grounded in financial problems often play a key role in ending a marriage. By raising a family’s standard of living, a working wife may strengthen her family’s financial and emotional stability.
Psychological factors also should be considered. For example, a wife blocked from a career outside the home may feel caged in the house. She may view her only choice as seeking a divorce. On the other hand, if she can find fulfillment through work outside the home, work and marriage can go together to create a stronger and more stable union.
Also, a major part of women’s inequality in marriage has been due to the fact that, in most cases, men have remained the main breadwinners. A working wife may rob a husband of being the master of the house. Depending upon how the couple reacts to these new conditions, it could create a stronger equal partnership or it could create new insecurities.It is said in the passage that when the economy falls_____
| A．men would choose working women as their marriage partners |
| B．more women would get married to seek financial security |
| C．even working women would worry about their marriages |
| D．more people would prefer to remain single for the time being |
If women find fulfillment through work outside the home,_____.
| A．they are more likely to dominate their marriage partners |
| B．their husbands are expected to do more housework |
| C．their marriage ties can be strengthened |
| D．they tend to put their career before marriage |
One reason why women with no career may seek a divorce is that_____.
| A．they feel that they have been robbed of their freedom |
| B．they are afraid of being bossed around by their husbands |
| C．they feel that their partners fail to live up to their expectations |
| D．they tend to suspect their husbands loyalty to their marriage |
Which of the following statements can best summarize the authors view in the passage?
| A．The stability of marriage and the divorce rate may reflect the economic situation of the country |
| B．Even when economically independent, most women have to struggle for real equality in marriage |
| C．In order to secure their marriage women should work outside the home and remain independent |
| D．The impact of the growing female workforce on marriage varies from case to case. |
My name is Amy. I’m a 25-year-old graduate student who likes yoga, home-decorating shows and eating spoonfuls of peanut butter straight from the jar. Oh yeah, and I’m an iPhone addict.
I wasn’t always an addict. In fact, for many years I told myself I didn’t want a fancy cellphone. They seemed like too much work, always ringing and demanding attention. I was perfectly content with my simple cellphone, and I didn’t feel like changing my mind any time.
However, about a year ago, I found myself envious of all those proud iPhone owners, holding their shiny new phones and showing them off to all their friends. I started to eavesdrop on conversations about “iPhone apps”, feeling like a tourist listening to a language I couldn’t speak.
Eventually I couldn’t ignore my iPhone instinct (本能) any longer, and I welcomed my new iPhone into my life. I instantly fell in love with the little bundle of joy, and could no longer imagine a life without it.
To my surprise, I suddenly found myself with a whole new circle of friends—other iPhone owners I could go to for advice and support as I learned the various functions of my new device. They responded to my iPhone-related queries when my other friends couldn’t, and didn’t roll their eyes when I bragged（吹牛）about all the things little Eloise (yes, I named her) could do.
For a couple months I built my new life with Eloise. However, I realized I had a problem when one day I found myself Google-mapping my way to my mailbox, which happens to be right outside my front door.
When I reflected upon the past few months, I couldn’t believe I didn’t see this coming. All the warning signs were there. Eloise slept right beside me and was the first thing I reached for in the morning. I checked my e-mail about 20 times a day. I also experienced attachment anxiety when I left poor Eloise in the changing room at the gym. What if she rang and needed my response? Or, even worse, what if a careless gym-goer knocked her out of my bag and caused her screen to crack?
Once I admitted I had a problem, things started to change. What used to feel like friendly messages now felt like constant complaining to respond. I hated that I could no longer leave the house without Eloise in my hand. Eventually, I felt angry with Eloise so much that I wanted to throw her at the wall.
I decided something had to be done. But, as I quickly realized, iPhones are like cigarettes and not easy to quit.
Then, while taking the bus to work one day, I was unexpectedly forced to quit—at least temporarily. When I reached into my purse to grab Eloise, I found her overcome by fever. My head swam with panic as I attempted to solve the problem, but without result. I couldn’t call anyone for advice. I couldn’t Google whether this had happened to any fellow iPhone owners. The Apple Store was closed by the time I finished work, so I headed home with fear into an Eloise-less night. But, after a couple hours without any text alerts, push notifications, or even good old-fashioned phone calls, I felt ... calmer. Without my electronic bed partner, I drifted off into the deepest sleep I’d had in months. The next morning, I read the news from the simplicity of the newspaper, instead of from my iPhone. I even noticed the cherry blossoms blooming.
My goodness, what had I been missing?The passage is mainly about ___________.
| A．how I changed my attitude towards iPhone |
| B．why I was content with my iPhone |
| C．how my simple cellphone changed my lifestyle |
| D．why I preferred to use iPhone eventually |
The phrase “ eavesdrop on” ( Paragraph 3) is closer in meaning to __________.
| A．adapt suddenly to | B．join unwillingly in |
| C．listen secretly to | D．argue fiercely in |
IPhones’__________ can not be listed among the reasons why the writer was addicted to it.
| A．diverse application | B．excellent service |
| C．bundle of joy | D．good company |
When did the writer get to know that she had to tear herself away from her iPhone?
| A．She needed her iPhone to lead her to the mailbox. |
| B．She slept with her iPhone beside her every night. |
| C．She checked and read her e-mails too frequently. |
| D．She dared not leave her iPhone alone at the gym. |
What message does the writer pass on at the end of the passage?
| A．She considered throwing away her iPhone regretful. |
| B．She looked forward to starting her new life with Eloise. |
| C．She thought it of little benefit to have a simple cellphone. |
| D．She was aware that she had to kick the habit of being addicted to her iPhone. |
Sports can help you keep fit and get in touch with nature. However, whether you are on the mountains, in the waves, or on the grassland, you should be aware that your sport of choice might have great influence on the environment.
Some sports are resource-hungry. Golf, as you may know, eats up not only large areas of countryside, but also tons of water. Besides, all sorts of chemicals and huge amounts of energy are used to keep its courses (球场) in good condition. This causes major environmental effects. For example, in the dry regions of Portugal and Spain, golf is often held responsible for serious water shortage in some local areas.
There are many environment-friendly sports. Power walking is one of them that you could take up today. You don’t need any special equipment except a good pair of shoes; and you don’t have to worry about resources and your purse. Simple and free, power walking can also keep you fit. If you walk regularly, it will be good for your heart and bones. Experts say that 20 minutes of power walking daily can make you feel less anxious, sleep well and have better weight control.
Whatever sport you take up, you can make it greener by using environment-friendly equipment and buying products made from recycled materials. But the final goal should be “green gyms”. They are better replacements for traditional health clubs and modern sports centers. Members of green gyms play sports outdoors, in the countryside or other open spaces. There is no special requirement for you to start your membership. And best of all, it’s free.Which of the following is the author most probably in favor of?
| A．Cycling around a lake. |
| B．Motor racing in the desert. |
| C．Playing basketball in a gym. |
| D．Swimming in a sports center. |
What do we know about golf from the passage?
| A．It is popular in Portugal and Spain. |
| B．It causes water shortages around the world. |
| C．It pollutes the earth with chemicals and wastes. |
| D．It needs water and electricity to keep its courses green. |
The author uses power walking as an example mainly because _________.
| A．it is an outdoor sport |
| B．it improves our health |
| C．it uses fewer resources |
| D．it is recommended by experts |
The author writes the passage to _________.
| A．show us the function of major sports |
| B．encourage us to go in for green sports |
| C．discuss the major influence of popular sports |
| D．introduce different types of environment-friendly sports |
A new study shows students who write notes by hand during lectures perform better on exams than those who use laptops(笔记本电脑).
Students are increasingly using laptops for note-taking because of speed and legibility(清晰度).But the research has found laptop users are less able to remember and apply the concepts they have been taught.
Researchers performed experiments that aimed to find out whether using a laptop increased the tendency to make notes “mindlessly” by taking down word for word what the professors said.
In the first experiment, students were given either a laptop or pen and paper. They listened to the same lectures and were told to use their usual note-taking skills. Thirty minutes after the talk, they were examined on their ability to remember facts and on how well they understood concepts.
The researchers found that laptop users took twice as many notes as those who wrote by hand. However, the typists performed worse at remembering and applying the concepts. Both groups scored similarly when it came to memorizing facts.
The researchers’ report said,“ While more notes are beneficial, if the notes are taken mindlessly, as is more likely the case on a laptop ,the benefit disappears.”
In another experiment aimed at testing long-term memory, students took notes as before but were tested a week after the lecture. This time, the students who wrote notes by hand performed significantly better on the exam.
These two experiments suggest that handwritten notes are not only better for immediate learning and understanding, but that they also lead to superior revision in the future.
More and more students favor laptops for note-taking because they can .
| A．write more notes | B．digest concepts better |
| C．get higher scores | D．understand lectures better |
While taking notes, laptop users tend to be .
| A．skillful | B．mindless |
| C．thoughtful | D．tireless |
The passage is likely to appear in .
| A．a newspaper advertisement | B．a computer textbook |
| C．a science magazine | D．a finance report |
Have you ever complained why life is so tiring? Does the sky sometimes seem dark to you? Are your studies sometimes not successful? Well, friends, cheer up and smile all the time. If you see the world with your warm heart, you’ll find that the whole world smiles to you.
While in school, sometimes you are tired of your lessons, but have you ever noticed the happy smile on your teacher’s face when you did a good job?
One day it is fine. Just before you go out, it suddenly starts to rain. Maybe you would feel very sad and start to complain about the weather. But dear friends, why don’t you sit down and listen to the free concerts that the nature offers you? And with the timely rain, crops in the fields will grow better and better and farmers will have a good harvest.
Although everyone wants to succeed in what he tries to do, sometimes failure can’t be avoided. I think failure is not terrible, and the terrible thing is that we are afraid of it and give up hope. When we face failure, we must be confident in ourselves, draw a useful lesson from it and try our best to finish what we have decided to do. As a popular saying goes, “Failure is the mother of success”.
Attitude decides everything. With an optimistic attitude life is easy and pleasant. Let’s smile to whatever we meet and the whole world will smile to us.People sometimes complain _________.
| A．the sky is always dark |
| B．their studies are successful |
| C．they see the world with their heart |
| D．life is tiring |
When we face failure, we ___________.
| A．must be confident in ourselves |
| B．shouldn’t be afraid of it |
| C．shouldn’t give up hope |
| D．All of the above |
The best title for the passage is_______.
| A．Smile and the World Smiles to You |
| B．Complaining about Life |
| C．Failure is the Mother of Success |
| D．It is Very Hard to Succeed |
The food we eat seems to have a great effect on our health. Although science has made big steps in making food more fit to eat, it has, at the same time, made many foods unfit to eat. Some research has shown that perhaps eighty percent of human illness is related to food and forty percent of cancer is related to food as well. That food is related to illness is not a new discovery. In 1945, some researchers realized that things commonly used to keep colors in meats and other food additives (添加剂) caused cancer.
Yet, these additives remain in our food, and it is difficult to know which things on the wrappings（包装）of foods are helpful or harmful. The additives which we eat are not all so direct. Farmers often give penicillin (青霉素) to their animals, and because of this, penicillin has been found in the milk of cows. Sometimes similar things are supplied to animals not for their health, but just to make a profit.
The farmers are simply trying to fatten the animals in order to get a higher price on the market. Although some countries have tried to control such things, the practice continues.According to this passage, we can know _____.
| A．perhaps most kinds of cancer are related to what people eat |
| B．perhaps most of human illness is caused by what we eat |
| C．cancer was discovered in 1945 |
| D．science has made food unfit to eat |
Things that are used to keep colors in meats are _____.
| A．harmful | B．useless | C．helpless | D．dangerous |
People use additives _____.
| A．to make food more unfit to eat |
| B．to cause cancer |
| C．to change the color of the food |
| D．to take off the diseases of the food |
Which of the following is NOT true?
| A．Some wrappings of food are harmful. |
| B．Farmers try to make more money on the market by fattening their animals. |
| C．"The practice continues" means "things are still going on like that". |
| D．We needn't take care of what we eat. |
Why are so many people afraid to fail? Quite simply because we forget that failure is part of the human life and that every person has the right to fail. Every person is able to fight failure and finally succeed.
Most parents work hard at preventing failure or protecting their children from the knowledge that they have failed. One way is to lower standards(标准). When a child finishes making a table, the mother describes it as “perfect” even though it doesn’t stand still. Another way is to blame others. If John fails in science, his teacher is unfair or stupid.
There’s a problem with the two ways. It makes a child unprepared for life in the real world. Young children need to learn that no one can be best at everything, no one can win all the time, and that it’s possible to enjoy a game even when you don’t win. A child often feels terrible, of course, when he is not invited to a birthday party, or is not chosen into a football team. But parents should not say “It doesn’t matter.” quickly. The young should be allowed to experience failure and be helped to come out of it.
Failure never gives people pleasure. It hurts both adults and children. But it can be really good to your life when you learn to use it. You must learn to ask “Why did I fail?” Don’t blame anyone else. Ask yourself what you did wrong and how you can improve. If someone else can help, don’t be shy about asking them. Success just repeats what has been done. It is not as good a teacher as failure. You can learn how to give a good party from an unsuccessful one.How do most parents prevent their children from failure?
| A． They give them some presents. |
| B． They don’t tell them that they have failed. |
| C． They don’t blame others. |
| D． They help them to come out of failure. |
Which of the following does a person need to learn when he fails?
| A． It’s impossible to enjoy a game if he misses it. |
| B． He is the worst of all. |
| C． It’s natural not to win a game and no one can win all the time. |
| D． His teammates are not good enough. |
Which would be the best title for the passage?
| A． Learning from Failure |
| B． Ways of Preventing Failure |
| C． Reasons of Failure |
| D． Getting Pleasure from Failure |
Dolphins(海豚) live in a dark underwater world. It’s often impossible to see each other or anything else around them, so sound plays an important role in their survival. To communicate with each other, dolphins produce all kinds of sounds.
Only other dolphins understand what the sounds mean. Scientists haven’t uncovered their secret communication, except for one kind of whistle. It might last less than a second, but this whistle is a big deal. Why? Because these whistles are actually names of dolphins - and every dolphin has one. Scientists call these sounds a “signature whistle.” When other dolphins hear the whistle, they know which dolphin is calling.
Dolphins often hunt by themselves but still need to stay connected to the group. Since they can’t always see each other, dolphins use their signature whistles to check in with other dolphins hundreds of yards away. “In coastal areas, dolphins exchange whistles even when they’re a third of a mile apart,” says Greg Campbell, who studies animals. That means dolphins shout out to group members that might be nearly five football fields away.
What’s amazing is who names the baby dolphin. Not the mother. Not an auntie dolphin or another group member. Scientists believe the baby dolphin itself comes up with the signature whistle. Like human babies, a baby dolphin plays with sounds throughout its first year. While testing its sound skills, a baby dolphin is doing something amazing. It’s creating or figuring out its signature whistle. How or why it chooses its signature whistle is not clear. Studies show that most of the time the signature whistle is nothing like its mother’s or group members’ whistles.
When the baby dolphin is about a year old, its signature whistle is set. It repeats it often so the other dolphins learn to recognize it.
Deciphering(破译) dolphin names is just the beginning of figuring out what dolphins communicate about. Do they chat about sharks? Discuss the tides? Maybe they even have a name for people. Someday scientists are to decipher the rest of dolphins’ communication.Sound is important for dolphins because of ______.
| A．their poor sense of direction |
| B．their living environment |
| C．their strong enemies |
| D．their big groups |
The dolphin’s signature whistle ______.
| A．lasts along time |
| B．can travel long distances |
| C．is especially helpful in hunting |
| D．can be recognized by other animals |
The author writes the text mainly to _____.
| A．encourage readers to study dolphins |
| B．tell readers how dolphins communicate |
| C．show how lovely and clever dolphins are |
| D．introduce a special sound made by dolphins |
A baby dolphin gets its name ______.
| A．soon after it was born | B．according to its size |
| C．all by itself | D．with the help of its group |
Life is filled with challenges. As we get older, we come to realize that those challenges are the very things that shape us and make us who we are. It is the same with the challenges that come with friendship. When we are faced with a challenge, we usually have two choices. We can try to beat it off, or we can decide that the thing presenting the challenge isn't worth the trouble and call it quits. Although there are certainly times when calling it quits is the right thing to do, in most cases all that is needed is commitment and communication.
When we are committed to something, it means that no matter how painful or how uncomfortable something is, we will always choose to face it through instead of running away from it. Communication is making a space for discussion and talking about how you feel as opposed to just saying what the other person did wrong. If you can say to a friend, "I got my feelings hurt", rather than "You hurt my feelings", you are going to be able to solve the problem much faster.
In dealing with many challenges that friendship will bring to you, try to see them for what they are: small hurdles you need to jump or get through on your way through life. Nothing is so big that it is impossible to get over, and hurt only serves to make us stronger. It is all part of growing up, it happens to everyone, and some day you will look back on all of this and say, "Hard as it was, it made me who I am today. And that is a good thing."The writer believes that challenges ________.
| A．are always born with friendship |
| B．help build friendship |
| C．are never worth attention |
| D．help us grow |
If your friend hurts your feelings, you are advised to ____.
| A．point out your friend's mistake |
| B．calm yourself down |
| C．start a proper conversation |
| D．run away from it |
The whole passage is centered on the relationship（关系）between ___.
| A．friendship and challenges |
| B．commitment and friendship |
| C．friendship and growth |
| D．challenges and chances |
Many gardeners believe that “talking” to their plants helps them grow---it turns out that they may not be crazy after all. According to the scientists from the University of Exeter, plants may keep communicating with each other through a secret “unseen” language.
For their experiment, the scientists picked a cabbage plant that is known to send out a gas when its surface is cut. In order to get video evidence of the communication, they changed the cabbage gene by adding the protein---luciderase(虫荧光素酶), which is what makes fireflies(萤火虫) glow in the dark.
When the changed cabbage plant was in full bloom, they cut a leaf off with a pair of scissors, and almost immediately, thanks to the luciderase, they could see the plant sending out “methyl jasmonate(茉莉酸甲酯)”.
While this was a known fact, what was surprising was the fact that the minute this gas began to give out, the nearby cabbage plants seemed to sense some kind of danger and started to send out a gas that they normally have to keep predators(捕食者) like caterpillars(毛虫) away.
What the scientists are not sure is whether the plants are trying to warn the other leaves or the near plants about the danger---something that will require further research However, the team, which is led by Professor Nick Smirnoff, is quite excited about the findings because this is the first time it has been proved that plants do not live a passive life, but actually move, sense and even communicate with each other.
However, before you get all concerned, they are quite sure that plants do not feel the pain when they are cut, since they do not have nerves---so go ahead and bite into that juicy carrot!What’s the best title of the passage?
| A． Plants Can Send Some Gas |
| B． Plants Can Communicate with Each Other |
| C． The “Unseen” Language of Plants |
| D． Plants Can’t Feel Pain |
What does the underlined word “they” in Paragraph 1 mean?
| A． Gardeners | B． Plants |
| C． Scientists | D． Fireflies |
When the plant sent out methyl jasmonate, which of the following statements is NOT TRUE?
| A． The nearby cabbage plants seemed to sense some kind of danger. |
| B． The nearby cabbage plants started to send out a gas. |
| C． The nearby cabbage plants tried to warn the near plants. |
| D． The nearby cabbage plants communicated through a secret language. |
According to the experiment, plants ________________.
| A． don’t live a passive life |
| B． can feel pain when they are cut |
| C． can warn the other leaves about danger |
| D． can talk with each other |
Every New Year brings renewed(更新的) expectation for a change, for a better life and for a better you. That’s a wonderful thing, because this fresh start gives us a chance to reinvent our lives and ourselves. Here’s how.
Let go
Many times we are held back by our previous failures,emotions and barriers(障碍). This is all old baggage. Let everything unhappy from the past go. Let go of failures. Let go of fears you’ve built up. Let go of your ideas about what your life has to be like. Let go of long-held beliefs and habits which seem to be burdens(负担) to you.
Clear away distractions(分心)
Clear away email, your favourite blogs and news websites. Clearaway the iPhone or Blackberry, and clear away all the chores that pull at your attention. In fact, if you can, shut off the Internet for a while. You can come back to it after you take a break.
Decide what matters most today
Forget about your goals for all of this year. Instead, decide what you want to do today. What matters most to you and your life? What are you most passionate(热情的) about right now? What excites you? What gives you the most fulfillment(满足感)? Often the answer would be in creating something, making something new, helping others, becoming a better person, and working on a project that you will be proud of. But whatever your answer, have it clear in your mind at the beginning of the day.
Reinvent yourself every day
Every day, you are reborn.Reinvent yourself and your life. Do what matters most to you. It might be the same thing that mattered most yesterday, or it might not be. That isn’t important. What’s important is today---right now! Be passionate, and be happy!
You’ll have a fresh start every single day---not just on January 1 of a new year.Writing this passage, the author seems to be ________.
| A．strict | B．peaceful | C．nervous | D．confident |
The underlined word “chores” refers to ______.
| A．modern technology | B．unimportant things |
| C．online information | D．fashinable devices |
Which of the following is the writer’s suggestion according to the passage?
| A．Stopping using hi-tech devices to avoid troubles in your life. |
| B．Seizing the moment, but not to make a plan for the far future. |
| C．Forgetting everything about and from the past |
| D．Making yourself a person reborn every day. |
The most suitable title for the passage is “ ________”.
| A．Work Effectively in a New Year |
| B．Reduce Stress in a New Year |
| C．Freshen the Start of Every New Day |
| D．Live a Better Life in Every New Day |
Researchers Jose Cordova and Erich Astudillo have discovered a new molecule(分子) that kills the bacteria Streptococcus Mutans, long known to be responsible for breaking down sugars in food in the mouth, which damages tooth leading to decay(腐烂). The new molecule they call “Keep 32” has been found to kill the bacteria.
The two have applied for a patent(专利) on their discovery and have also begun a marketing strategy aimed at both oral care products and food products. They say either product, if left in the mouth for just 60 seconds ,will kill all the harmful bacteria in the mouth and keep them at bay for several hours. If the new molecule passes health and safety tests, the two believe products using their new molecule should be on the market in as little as a year and a half. They expect the market for such a product to reach $300 million in just the first year.
The two have been working together since 2005 using money from the Founder Institute and say the aim is to approve the process for creating the molecule they’ve discovered for big companies like Procter & Gamble, Colgate even candy companies such as Hershey’s. In interviews, Astudillo has suggested that the two researchers are already heavily into discussion with several companies, some of which are interested in buying the patent once it is approved.
Over the years many products have come on the scene with announcement of reducing tooth decay and even the loss of teeth, but other than the introduction of fluoride(氟化物) into drinking water, not much progress has been made. If the announcement made by this new team proves true however, it could foresee a mark in saving the world of tooth decay as well as helping to improve the health for millions of people as tooth decay has been linked to many other health problems throughout the body including heart attacks.The underlined word “them” in Para. 2 refers to _________.
| A．oral care products | B．food products |
| C．new molecules | D．the harmful bacteria |
The phrase “come on the scene” in Para. 4 is closest in meaning to __________.
| A．performed | B．occurred |
| C．existed | D．arrived |
What has been a way to reduce tooth decay and even the loss of teeth over the years?
| A．Using the molecule “Keep 32”. |
| B．Killing the bacteria Mutans. |
| C．Introducing fluoride into drinking water. |
| D．Cooperating with some big companies. |
This passage mainly tells us that ___________.
| A．many health problems are closely connected to tooth decay |
| B．the discovery of a new molecule will greatly benefit health care |
| C．two researchers are discussing their patent with companies |
| D．researchers discover a molecule that can kill tooth decay-causing bacteria |
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