For hundreds of years humans have dreamed of finding life on distant planets.Now the hope of discovering real evidence of life has greatly increased.
NASA's Mars detector（探测器）,Opportunity,succeeded in finding signs that water once existed on the planet.Opportunity landed on Mars in January.Scientists now believe that the planet could once have supported life.
This discovery was chosen by Science,one of the world's leading magazines,as the most important scientific achievement of 2004 last Friday.
“This little,wheeled,one-armed box went around another planet and has done something no human has ever managed,” according to Science.“It has discovered another place in the universe where life could once have existed.
“Although we still can't say that life could have existed in this environment,it is now certain that there was water on Mars,”said Steve Squyres,one of the scientists working on the Mars mission.The evidence comes from pictures and chemical readings taken by Opportunity.It includes marks on rocks like those caused by following water on Earth and salty chemicals like those found in dried-out sea-beds.Scientists said the new evidence proved beyond doubt that water has existed on Mars.But it is still unknown whether the water was like an ocean or just ice.
While Opportunity has not found any signs of life,the presence of water means life is possible.“In everything we know about life on Earth,there is no example without liquid water,” Squyres said.“So water is important for the search for life on Mars.”
Researchers agree that a future mission（任务） should bring back physical samples（样品）.But some scientists worry about the risk that this could introduce dangerous foreign creatures to Earth.“The problem here is how to get the samples back,”Squyres replied.“I think it is our responsibility to limit any risk.”What proved that water existed on Mars?
| A．The physical samples with salty chemicals. |
| B．The marks on rocks and salty chemicals. |
| C．Scientific achievements of 2004. |
| D．Creatures from Mars. |
Which of the following is true according to the text?
| A．It is now certain that there was water on Mars. |
| B．The water on Mars was like an ocean. |
| C．Evidence of life on Mars has been found. |
| D．Search for life on Mars is a great risk to humans. |
How did scientists draw the conclusion that there was water on Mars?
| A．The world's leading magazine has announced the fact. |
| B．Scientists have taken many pictures and chemical readings on the Mars. |
| C．Astronauts have got some rocks from Mars. |
| D．Scientists have made a study of the pictures and readings sent back by Mars detector. |
It can be inferred that,if the creatures from Mars came to earth,_________.
| A．they would be kind to humans |
| B．they would be cruel to humans |
| C．they would be a great danger to Earth |
| D．it would be hard to say whether it would be good news or bad news |
When you make a mistake, big or small, cherish it like it’s the most precious thing in the world. Because in some ways, it is.
Most of us feel bad when we make mistakes, beat ourselves up about it, feel like failures, get mad at ourselves.
And that’s only natural: most of us have been taught from a young age that mistakes are bad, that we should try to avoid mistakes. We’ve been scolded when we make mistakes—at home, school and work. Maybe not always, but probably enough times to make feeling bad about mistakes an unconscious reaction.
Yet without mistakes, we could not learn or grow. If you think about it that way, mistakes should be cherished and celebrated for being one of the most amazing things in the world: they make learning possible; they make growth and improvement possible.
By trial and error—trying things, making mistakes, and learning from those mistakes—we have figured out how to make electric light, to paint the ceiling of the Sistine Chapel, to fly.
Mistakes make walking possible for the smallest toddler, make speech possible, make works of genius possible.
Think about how we learn: we don’t just consume information about something and instantly know it or know how to do it. You don’t just read about painting, or writing, or computer programming, or baking, or playing the piano, and know how to do them right away. Instead, you get information about something, from reading or from another person or from observing, then you make mistakes and repeat, making mistakes, learning from those mistakes, until you’ve pretty much learned how to do something. That’s how we learn as babies and toddlers, and how we learn as adults. Mistakes are how we learn to do something new—because if you succeed at something, it’s probably something you already knew how to do. You haven’t really grown much from that success—at most it’s the last step on your journey, not the whole journey. Most of the journey was made up of mistakes, if it’s a good journey.
So if you value learning, if you value growing and improving, then you should value mistakes. They are amazing things that make a world of brilliance possible.Why do most of us feel bad about making mistakes?
| A．Because mistakes make us suffer a lot. |
| B．Because it’s a natural part in our life. |
| C．Because we’ve been taught so from a young age. |
| D．Because mistakes have ruined many people’s careers. |
According to the passage, what is the right attitude to mistakes?
| A．We should try to avoid making mistakes. |
| B．We should owe great inventions mainly to mistakes. |
| C．We should treat mistakes as good chances to learn. |
| D．We should make feeling bad about mistakes an unconscious reaction. |
The underlined word “toddler” in Paragraph 6 probably means .
| A．a small child learning to walk |
| B．a kindergarten child learning to draw |
| C．a primary pupil learning to read |
| D．a school teenager learning to write |
We can learn from the passage that .
| A．most of us can really grow from success |
| B．growing and improving are based on mistakes |
| C．we learn to make mistakes by trial and error |
| D．we read about something and know how to do it right away |
Guide to Stockholm University Library
Our library offers different types of studying places and provides a good studying environment.
Zones
The library is divided into different zones. The upper floor is a quiet zone with over a thousand places for silent reading, and places where you can sit and work with your own computer. The reading places consist mostly of tables and chairs. The ground floor is the zone where you can talk. Here you can find sofas and armchairs for group work.
Computers
You can use your own computer to connect to the wi-fi specially prepared for notebook computers, you can also use library computers, which contain the most commonly used applications, such as Microsoft Office. They are situated in the area known as the Experimental Field on the ground floor.
Group-study places
If you want to discuss freely without disturbing others, you can book a study room or sit at a table on the ground floor. Some study rooms are for 2-3 people and others can hold up to 6-8 people. All rooms are marked on the library maps.
There are 40 group-study rooms that must be booked via the website. To book, you need an active University account and a valid University card. You can use a room three hours per day, nine hours at most per week.
Storage of Study Material
The library has lockers for students to store course literature. When you have obtained at least 40 credits(学分), you may rent a locker and pay 400 SEK for a year’s rental period.
Rules to be Followed
Mobile phone conversations are not permitted anywhere in the library. Keep your phone on silent as if you were in a lecture and exit the library if you need to receive calls.
Please note that food and fruit are forbidden in the library, but you are allowed to have drinks and sweets with you.The library’s upper floor is mainly for students to .
| A．read in a quiet place |
| B．have group discussions |
| C．take comfortable seats |
| D．get their computers fixed |
Library computers on the ground floor __________.
| A．help students with their field experiments |
| B．are for those who want to access the wi-fi |
| C．contain software necessary for schoolwork |
| D．are mostly used for filling out application forms |
What condition should be met to book a group-study room?
| A．Group must consist of 8 people. |
| B．One should have an active University account. |
| C．Three-hour use per day is the minimum. |
| D．Applicants must mark the room on the map. |
A student can rent a locker in the library if he ____________.
| A．has earned the required credits |
| B．attends certain course |
| C．has nowhere to put his books |
| D．can afford the rental fee |
What should NOT be brought into the library?
| A．Mobile phones. | B．Orange juice. |
| C．Candy. | D．Sandwiches. |
Another cultural aspect of nonverbal communication is one that you might not think about: space. Every person perceives himself to have a sort of invisible shield surrounding his physical body. When someone comes too close, he feels uncomfortable. When he bumps onto someone, he feels obligated to apologize. But the size of a person’s “comfort zone” depends on his cultural ethnic origin. For example, in casual conversation, many Americans stand about four feet apart. In other words, they like to keep each other “at arm’s length”, people in Latin or Arab cultures, in contrast, stand very close to each other, and touch each other often. If someone from one of those cultures stands too close to an American while in conversation, the American may feel uncomfortable and back away.
When Americans are talking, they expect others to respond to what they are saying. To Americans, polite conversationalists empathize by displaying expressions of excitement or disgust, shock or sadness. People with a “poker face”, whose emotions are hidden by a deadpan expression, are looked upon with suspicion. Americans also indicate their attentiveness in a conversation by raising their eyebrows, nodding, smiling politely and maintaining good eye contact. Whereas some cultures view direct eye contact as impolite or threatening, Americans see it as a sign of genuineness and honesty. If a person doesn’t look you in the eye, American might say, you should question his motives—or assume that he doesn’t like you. Yet with all the concern for eye contact, Americans still consider staring—especially at strangers—to be rude. What the author discussed in the previous section is most probably about __________.
| A．classification of nonverbal communication |
| B．the reasons why people should think about space |
| C．the relationship between communication and space |
| D．some other cultural aspects of nonverbal communication |
How far people keep to each other while talking is closely associated with their ______.
| A．origin | B．culture | C．custom | D．nationality |
When an Italian talks to an Arabian on informal occasions, ______.
| A．he stands about four feet away |
| B．"comfort zone" does not exist |
| C．keeping close enough is preferred |
| D．communication barriers may emerge |
A "poker face" (Line 3, Para. 2) refers to a face which is ______.
| A．attentive | B．emotional |
| C．suspicious | D．expressionless |
In a conversation between friends, Americans regard it as sincere and truthful to ______.
| A．maintain direct eye contact |
| B．hide emotions with a deadpan expression |
| C．display excitement or disgust, shock or sadness |
| D．raise their eyebrows, nod and smile politely |
The predictability of our death rates is something that has long puzzled social scientists. After all, there is no natural reason why 2,500 people should accidentally shoot themselves each year or why 7,000 should drown or 55,000 die in their cars. No one establishes a quota (定额) for each type of death. It just happens that they follow a consistent pattern year after year.
A few years ago a Canadian psychologist named Gerald Wilde became interested in this phenomenon. He noticed that mortality rates for violent and accidental deaths throughout the Western world have remained strangely static throughout the whole of the century, despite all the technological advances and increases in safety standards that have happened in that time. Wilde developed an interesting theory called “risk homeostasis”. According to this theory, people naturally live with a certain level of risk. When something is made safer, people will get around the measure in some way to get back to the original level of danger. If, for instance, they are required to wear seat belts, they will feel safer and thus will drive a little faster and a little more recklessly, thereby statistically canceling out the benefits that the seat belt offers. Other studies have shown that where a crossing is made safer, the accident rate invariably falls there but rises elsewhere along the same stretch of road as if making up for the drop. It appears, then, that we have an inborn need for danger. In all events, it is becoming clearer and clearer to scientists that the factors influencing our lifespan are far more subtle and complex than had been previously thought. It now appears that if you wish to live a long life, it isn’t simply a matter of paying attention to certain precautions such as eating the right foods, not smoking, and driving with care. You must also have the right attitude. Scientists at the Duke University Medical Center made a 15-year study of 500 persons personalities and found, somewhat to their surprise, that people with a suspicious or mistrustful nature die prematurely far more often than people with a sunny disposition. Looking on the bright side, it seems, can add years to your life span.What social scientists have long felt puzzled about is why __________.
| A．the death rate can not be predicted |
| B．the death toll remained stable year after year |
| C．a quota for each type of death has not come into being |
| D．people lost their lives every year for this or that reason |
In his research, Gerald Wilde finds that technological advances and increases in safety standards __________.
| A．have helped solve the problem of so high death rate |
| B．have oddly accounted for death rates in the past century |
| C．have reduced death rates for violent and accidental deaths |
| D．have achieved no effect in bringing down the number of deaths |
According to the theory of “risk homeostasis”, some traffic accidents result from ___________.
| A．our inborn desire for risk |
| B．our fast and reckless driving |
| C．our ignorance of seat belt benefits |
| D．our instinctive interest in speeding |
By saying “statistically canceling out the benefits that the seat belt offers” (Para. 2), the author means __________.
| A．wearing seat belts does not have any benefits from the statistic point of view |
| B．deaths from wearing seat belts are the same as those from not wearing them |
| C．deaths from other reasons counterbalance the benefits of wearing seat belts |
| D．wearing seat belts does not necessarily reduce deaths from traffic accidents |
Which of the following may contribute to a longer life span?
| A．Showing adequate trust instead of suspicion of others |
| B．Eating the food low in fat and driving with great care |
| C．Cultivating an optimistic personality and never losing heart |
| D．Looking on the bright side and developing a balanced level of risk |
It is pretty much a one-way street. While it may be common for university researchers to try their luck in the commercial world, there is very little traffic in the opposite direction. Pay has always been the biggest deterrent, as people with families often feel they cannot afford the drop in salary when moving to a university job. For some industrial scientists, however, the attractions of academia (学术界) outweigh any financial considerations.
Helen Lee took a 70% cut in salary when she moved from a senior post in Abbott Laboratories to a medical department at the University of Cambridge. Her main reason for returning to academia mid-career was to take advantage of the greater freedom to choose research questions. Some areas of inquiry have few possibilities of a commercial return, and Lee’s is one of them.
The impact of a salary cut is probably less severe for a scientist in the early stages of a career. Guy Grant, now a research associate at the Unilever Centre for Molecular Informatics at the University of Cambridge, spent two years working for a pharmaceutical (制药的) company before returning to university as a post-doctoral researcher. He took a 30% salary cut but felt it worthwhile for the greater intellectual opportunities.
Higher up the ladder, where a pay cut is usually more significant, the demand for scientists with a wealth of experience in industry is forcing universities to make the transition (转换) to academia more attractive, according to Lee. Industrial scientists tend to receive training that academics do not, such as how to build a multidisciplinary (多学科的) team, manage budgets and negotiate contracts. They are also well placed to bring something extra to the teaching side of an academic role that will help students get a job when they graduate, says Lee, perhaps experience in manufacturing practice or product development. “Only a small number of undergraduates will continue in an academic career. So someone leaving university who already has the skills needed to work in an industrial lab has far more potential in the job market than someone who has spent all their time on a narrow research project.”By “a one-way street” (Line 1, Para. 1), the author means ________.
| A．university researchers know little about the commercial world |
| B．there is little exchange between industry and academia |
| C．few industrial scientists would quit to work in a university |
| D．few university professors are willing to do industrial research |
The word “deterrent” (Line 3, Para. 1) most probably refers to something that ________.
| A．keeps someone from taking action |
| B．helps to move the traffic |
| C．attracts people’s attention |
| D．brings someone a financial burden |
What was Helen Lee’s major consideration when she changed her job in the middle of her career?
| A．Flexible work hours. |
| B．Her research interests. |
| C．Her preference for the lifestyle on campus. |
| D．Prospects of academic accomplishments. |
Guy Grant chose to work as a researcher at Cambridge in order to ________.
| A．do financially more rewarding work |
| B．raise his status in the academic world |
| C．enrich his experience in medical research |
| D．take advantage of better intellectual opportunities |
What contribution can industrial scientists make when they come to teach in a university?
| A．Increase its graduates’ competitiveness in the job market |
| B．Develop its students’ potential in research. |
| C．Help it to obtain financial support from industry. |
| D．Adapt its research to practical applications. |
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