1 . Albert Einstein’s 1915 masterpiece “The Foundation of the General Theory of Relativity” is the first and still the best introduction to the subject, and I recommend it as such to students. But it probably wouldn’t be publishable in a scientific journal today.

Why not? After all, it would pass with flying colours the tests of correctness and significance. And while popular belief holds that the paper was incomprehensible to its first readers, in fact many papers in theoretical physics are much more difficult.

As the physicist Richard Feynman wrote, “There was a time when the newspapers said that only 12 men understood the theory of relativity. I do believe there might have been a time when only one man did, because he was the only guy who caught on, before he wrote his paper. But after people read the paper a lot understood the theory of relativity in some way or other, certainly more than 12.”

No, the problem is its style. It starts with a leisurely philosophical discussion of space and time and then continues with an exposition of known mathematics. Those two sections, which would be considered extraneous today, take up half the paper. Worse, there are zero citations of previous scientists’ work, nor are there any graphics. Those features might make a paper not even get past the first editors.

A similar process of professionalization has transformed other parts of the scientific landscape. Requests for research time at major observatories or national laboratories are more rigidly structured. And anything involving work with human subjects, or putting instruments in space, involves piles of paperwork.

We see it also in the Regeneron Science Talent Search, the Nobel Prize of high school science competitions. In the early decades of its 78-year history, the winning projects were usually the sort of clever but naive, amateurish efforts one might expect of talented beginners working on their own. Today, polished work coming out of internships(实习) at established laboratories is the norm.

These professionalizing tendencies are a natural consequence of the explosive growth of modern science. Standardization and system make it easier to manage the rapid flow of papers, applications and people. But there are serious downsides. A lot of unproductive effort goes into jumping through bureaucratic hoops(繁文缛节), and outsiders face entry barriers at every turn.

Of course, Einstein would have found his way to meeting modern standards and publishing his results. Its scientific core wouldn’t have changed, but the paper might not be the same taste to read.

1. According to Richard Feynman, Einstein’s 1915 paper ________.

A．was a classic in theoretical physics

B．turned out to be comprehensible

C．needed further improvement

D．attracted few professionals

2. What does the underlined word “extraneous” in Paragraph 4 mean?

A．Unrealistic.	B．Irrelevant.
C．Unattractive.	D．Imprecise.

3. According to the author, what is affected as modern science develops?

A．The application of research findings.

B．The principle of scientific research.

C．The selection of young talents.

D．The evaluation of laboratories.

4. Which would be the best title for this passage?

A．What makes Einstein great?

B．Will science be professionalized?

C．Could Einstein get published today?

D．How will modern science make advances?

2 . Babies are surrounded by human language, always listening and processing. Eventually, they put sounds together to produce a “Daddy” or a “Mama”. But what still confuses neuroscientists is exactly how the brain works to put it all together.

To figure it out, a team of researchers turned to a frequent stand-in (代替) for babies when it comes to language learning: the song-learning zebra finch. “We’ve known songbirds learn their song by first forming a memory of their father’s song or another adult’s song. Then they use that memory to guide their song learning,” said Neuroscientist Todd Roberts. “It’s been a long-term goal of the field to figure out how or where in the brain this memory is. This type of imitative learning that birds do is very similar to the type of learning that we engage in regularly—particularly when we’re young, we use it to guide our speech learning.”

Roberts and his team had a feeling that the interface (交叉区域) between sensory areas and motor areas in the brain was critical for this process, and they focused on a group of brain cells called the NIf.

“In order to prove that we could identify these circuits, we thought if we could implant a false memory.” First, they used a virus to cause the neurons (神经元) in the birds’ NIf to become sensitive to light. Then, using a tiny electrode as a flashlight, they activated (激活) the neurons. The length of each pulse of light corresponded with the amount of time the neurons would fire. And the birds’ brains interpreted that time period as the length of each note.

Soon enough, the birds began to practice the notes they had learned, even though they never really heard the sounds. Amazingly, the birds produced them in the correct social situations. The researchers say this is the first time anybody has found exactly a part of the brain necessary for generating the sorts of memories needed to copy sounds.

“This line of research is going to help us identify where in the brain we encode memories of relevant social experiences that we use to guide learning. We know that there are several neurodevelopmental disorders in people that have really far-reaching effects on this type of learning.”

1. The zebra finch is researched because its song-learning mode ________.

A．decides whether it will sing songs

B．helps it to say “Daddy” or “Mama”

C．is like the way babies learn speech

D．reflects its talent for imitating its father’s song

2. What does the underlined word “it” in Paragraph 2 refer to?

A．The interface in the brain.

B．Guidance from adults.

C．Imitative learning type like birds’.

D．The way of regular learning.

3. What can we learn from the research led by Roberts?

A．Scientists activated some neurons by using an electrode.

B．A bird only sings what it heard before.

C．The brain produces tiny electrodes.

D．Birds are sensitive to light.

4. What do the Roberts’ team expect of this line of research?

A．A change in our way of listening and processing.

B．A chance to have relevant social experiences.

C．A better knowledge of the secrets of learning.

D．Identification of neurodevelopmental disorders.

3 . The vaccine (疫苗) news continues to seem very encouraging. Britain started its mass vaccination effort and the U.S. isn’t far behind.

But there is still one dark cloud hanging over the vaccines that many people don’t yet understand.

The vaccines will be much less effective at preventing death and illness in 2021 if they are introduced into a population where the coronavirus is still severe—as is now the case in the U.S.

A vaccine is like a fire hose (消防龙头). A vaccine that’s 95 percent effective, as Moderna’s and Pfizer’s versions appear to be, is a powerful fire hose. But the size of a fire is still a bigger determinant of how much destruction occurs.

At the current level of infection in the U.S. (about 200,000 confirmed new infections per day), a vaccine that is 95 percent effective—distributed at the expected pace—would still leave a terrible toll (伤亡人数) in the six months after it was introduced. Almost 10 million or so Americans would catch the virus, and more than 160,000 would die.

This is far worse than the toll in a different situation where the vaccine was only 50 percent effective but the U.S. had reduced the infection rate to its level in early September (about 35,000 new daily cases). In that case, the death toll in the next six months would be kept to about 60,000.

It’s worth pausing for a moment on this comparison. If the U.S. had maintained its infection rate from September and Moderna and Pfizer had announced this fall that their vaccines were only 50 percent effective, a lot of people would have panicked.

But the reality we have is actually worse.

How could this be? No vaccine can get rid of a pandemic immediately, just as .no fire hose can put out a forest fire. While the vaccine is being distributed, the virus continues to do damage.

There is one positive way to look at this: Measures that reduce the virus’s spread—like mask-wearing, social distancing and rapid-result testing—can still have great consequences. They can save more than 100,000 lives in coming months.

1. How does the author mainly present his argument?

A．By giving definitions.	B．By categorizing facts.
C．By drawing comparisons.	D．By appealing to emotions.

2. Which does the author think is a better way to save lives?

A．Improving the effectiveness of the vaccines.

B．Producing a greater variety of vaccines.

C．Looking at the situation in a positive way.

D．Wearing masks and practicing social distancing.

3. What does paragraph 6 tell us?

A．The vaccines are less effective than expected.

B．The US have controlled the spread of the coronavirus.

C．The death toll in the next six months will be about 60,000.

D．Fewer people will die if the infection rate is lower.

4. What can we infer from the text?

A．The vaccine is the hope of wiping out the pandemic.

B．The public are optimistic about the effects of the vaccine.

C．The public are concerned about the high infection rate.

D．The distribution of vaccine will end the pandemic quickly.

4 . Great work is work that makes a difference in people’s lives, writes David Sturt, Executive Vice President of the O.C. Tanner Institute, in his book Great Work: How to Make a Difference People Love. Sturt insists, however, that great work is not just for surgeons or special-needs educators or the founders of organizations trying to eliminate poverty in sub-Saharan Africa. The central theme of Great Work, according to Sturt, is that anyone can make a difference in any job. It’s not the nature of the job, but what you do with the job that counts. As proof, Sturt tells the story of a remarkable hospital cleaner named Moses.

In a building filled with doctors and nurses doing great life-saving work, Moses the cleaner makes a difference. Whenever he enters a room, especially a room with a sick child, he engages both patients and parents with his optimism and calm, introducing himself to the child and, Sturt writes, speaking “little comments about light and sunshine and making things clean.” He comments on any progress he sees day by day (“you’re sitting up today, that’s good.”) Moses is no doctor and doesn’t pretend to be, but he has witnessed hundreds of sick children recovering from painful surgery, and parents take comfort from his encouraging words. For Matt and Mindi, whose son McKay was born with only half of a heart, Moses became a close friend. As Sturt explains, “Moses took his innate (与生俱来的) talents (his sensitivity) and his practical wisdom (from years of hospital experience) and combined them into a powerful form of patient and family support that changed the critical-care experience for Mindi, Matt and little McKay.”

How do people like Moses do great work when so many people just work? That was the central question raised by Sturt and his team at the O.C. Tanner Institute, a consulting company specialized in employee recognition and rewards system.

O.C. Tanner launched an exhaustive Great Work study that included surveys to 200 senior executives, a further set of surveys to 1,000 managers and employees working on projects, an in-depth qualitative study of 1.7 million accounts of award-winning work (in the form of nominations (提名) for awards from corporations around the world), and one-on-one interviews with 200 difference makers. The results of the study revealed that those who do great work refuse to be defeated by the constraints of their jobs and are especially able to reframe their jobs: they don’t view their jobs as a list of tasks and responsibilities but see their jobs as opportunities to make a difference. No matter, as Moses so ably exemplifies (例证), what that job may be.

1. According to Sturt, which of the following is TRUE?

A．It’s not the nature of the job, but what you do that makes a difference.

B．Anyone in the world is responsible to delete poverty and change the world.

C．Anyone can make a difference in people’s lives no matter what kind of job he does.

D．Surgeons, special-needs educators and founders of organizations can succeed more easily.

2. According to this passage, how does Moses, a common hospital cleaner, make a difference in people’s lives?

A．By keeping optimistic and calm when facing patients and their parents at hospital.

B．By showing his special gift and working experience when working at hospital.

C．By showing his sympathy and kindness to patients when entering their rooms.

D．By pretending to be a doctor or nurse when entering a room with a sick child.

3. The word “constraints” in the last paragraph probably refers to ______.

A．demands

B．advantages

C．disadvantages

D．limitations

4. What can we infer from the passage?

A．Great work is work that makes a difference in people’s lives no matter what you do.

B．If a boss has trouble recognizing his employees, he can ask O. C. Tanner for advice.

C．Moses makes a difference through his sensitivity and his practical wisdom.

D．Those who do great work are never defeated by others or their jobs themselves.

5 . In a recent series of experiments at the University of California, researchers studied toddlers’ thinking about winners and losers, bullies (欺凌) and victims.

In the first experiment, toddlers (学步儿童) watched a scene in which two puppets (木偶) had conflicting goals: One was crossing a stage from right to left, and the other from left to right. The puppets met in the middle and stopped. Eventually one puppet bowed down and moved aside, letting the other one pass by. Then researchers asked the toddlers which puppet they liked. The result: 20 out of 23 toddlers picked the higher-status puppet — the one that did not bow or move aside. It seems that individuals can gain status for being dominant (占优势的) and toddlers like winners better than losers.

But then researchers had another question: Do toddlers like winners no matter how they win? So, researchers did another experiment very similar to the one described above. But this time, the conflict ended because one puppet knocked the other down and out of the way. Now when the toddlers were asked who they liked, the results were different: Only 4 out of 23 children liked the winner.

These data suggest that children already love a winner by the age of 21-31 months. This does not necessarily mean that the preference is inborn: 21 months is enough time to learn a lot of things. But if a preference for winners is something we learn, we appear to learn it quite early.

Even more interesting, the preference for winners is not absolute. Children in our study did not like a winner who knocked a competitor down. This suggests that already by the age of 21-31 months, children’s liking for winners is balanced with other social concerns, including perhaps a general preference for nice or helpful people over aggressive ones.

In a time when the news is full of stories of public figures who celebrate winning at all costs, these results give us much confidence. Humans understand dominance, but we also expect strong individuals to guide, protect and help others. This feels like good news.

1. One of the purposes of the experiments is to ________.

A．teach toddlers how to gain higher status

B．offer toddlers a chance to watch a scene

C．observe the process of toddlers’ solving a conflict

D．find out toddlers’ attitude toward winners and losers

2. The toddlers regarded bowing and moving aside as a sign of ________.

A．obeying rules

B．gaining status

C．giving in to the other

D．showing good manners

3. What does the second experiment tell us about toddlers?

A．They are excellent learners.

B．They are always changeable.

C．They show mercy to the loser.

D．They value kindness over winning.

4. What does the author think of the results of the series of experiments?

A．Disappointing.	B．Encouraging.
C．Unexpected.	D．Controversial.

6 . To learn to think is to learn to question. Those who don't question never truly think for themselves. These are simple rules that have governed the advancement of science and human thought since the beginning of time. Advancements are made when thinkers question theories and introduce new ones. Unfortunately, it is often the great and respected thinkers who end up slowing the progress of human thought. Aristotle was a brilliant philosopher whose theories explained much of the natural world, often incorrectly. He was so esteemed by the scientific community that even 1，200 years after his death, scientists were still trying to build upon his mistakes rather than correct them!

Brilliant minds can intimidate up­and­coming thinkers who are not confident of their abilities. They often believe they are inferior to the minds of giants such as Aristotle, leading many to accept current paradigms instead of questioning them.

I, like many thinkers of the past, once believed in my mental inferiority. I was certain that my parents, my teachers-adults in general-were always right. They were like a textbook to me; I didn't question what was written on those pages. I respected them, and accepted whatever they told me. But that attitude soon changed. My mind's independence was first stimulated in the classroom.

A stern, 65­year­old elementary­school science teacher once told me that light is a type of wave. I confidently went through years of school believing that light is a wave. One day，however I heard the German exchange student mention that light could be made up of particles. As the others laughed at his statement, I started to question my beliefs.

Maybe the teachers and textbooks hadn't given me the whole story. I went to the library, did some research and learned of the light­as­a­wave versus light­as­a­particle debate. I read about Einstein's discovery of the dual nature of light and learned the facts of a paradox(悖论) that puzzles the world's greatest thinkers to this day. Light behaves as both a particle and a wave, it is both at once. I realized I had gone through life accepting only half of the story as the whole truth.

Each new year brought more new facts, and I formulated even more questions. I found myself in the library after school, trying to find my own answers to gain a more complete understanding of what I thought I already knew. I discovered that my parents and teachers are incredible tools in my quest for knowledge, but they are never the final word. Even textbooks can be challenged. I learned to question my sources, I learned to be a thinker. I once believed that everything I learned at home and at school was certain, but I have now discovered to re­examine when necessary.

Questions are said to be the path to knowledge and truth, and I plan to continue questioning. How many things do we know for sure today that we will question in the future? At this moment, I know that our sun will burn for another five billion years, and I know nothing can escape the gravity of a black hole. This knowledge, however, may change in the next 20 years-maybe even in the next two. The one thing we can control now is our openness to discovery. Questions are the tools of open minds, and open minds are the key to intellectual advancement.

1. In the first paragraph, Aristotle is taken as an example to show that ______.

A．he is the greatest and respected philosopher of all time

B．huge influence of great thinkers may block human thought

C．advancements are made when thinkers question theories

D．great thinkers often make mistakes and then correct them

2. What does the underlined word “intimidate” in Paragraph 2 mean?

A．Frighten.

B．Encourage.

C．Strength.

D．Persuade.

3. The author began to question his previous beliefs because ______.

A．what he learned from textbooks before turned out to be wrong

B．he was inspired by the different ideas from an exchange student

C．he was laughed at by other students for his unacceptable statement

D．he was not satisfied with his life and desperate to achieve success

4. According to the passage, the author ______.

A．looks down upon great thinkers all the time

B．never doubts what he has learned in the textbook

C．always throws himself into the laboratory

D．determines to be a thinker and questioner

5. We can conclude from the last paragraph that ______.

A．the author is not quite sure about his future

B．we human beings don't dare to predict future

C．theory of black holes will change in two years

D．questioning is necessary to promote advancement

6. What does the passage mainly talk about?

A．Following rules.	B．Challenging yourself.
C．Questioning giants.	D．Predicting future.

7 . Oxygen, I'm sure you'd agree, is pretty important for life on Earth. We breathe it in, our cells survive on it and without it, we hardly live. Basically all multicellular life on Earth evolved over millions of years to make use of oxygen.

But take a deep breath, because we need to talk about Henneguya salminicola, a tiny parasite(寄生虫) containing fewer than100 cells that lives within the muscle tissue of salmon, a large fish with silver skin and pink flesh. The strange-looking parasite does not busy itself with such small matters as breathing oxygen. Nope, it seems that H. salminicola is the first multicellular animal we've found that survives without the stuff.

“Aerobic respiration(有氧呼吸) was thought to be commonly found in animals, but now we confirmed that this is not the case, "said Dorothee Huchon, a zoologist at Tel Aviv University in Israel, in a press release.

Huchon and a team of international researchers examined and sequenced(排序) all of. salminicola's' genes in their study, published in the journal Proceedings of the National Academy of Sciences. They found that the parasite, which is closely related to jellyfish, lacks the DNA machinery necessary to“breathe”---it doesn't' have mitochondria(线粒体), often called the "powerhouse" of the cell, because they use oxygen to make energy. It's like a little factory inside almost all cells, and DNA detectives can find mitochondrial genes during sequencing.

The discovery came as something of an accident for the team, who were examining the genome (the complete set of genes) of the species. When they went searching for the mitochondrial genes,   they came up empty-handed. "Our discovery shows that evolution can go in strange directions, ”Huchon said. "Aerobic respiration is a major source of energy, and yet we found an animal that gave up this important pathway.”

Some single-celled life forms have evolved the ability to survive without oxygen and do not have mitochondria, either. Plenty of bacteria can exist without oxygen at all. Instead of oxygen, they get their energy from fermentation(发酵) or use other molecules like iron.

But how H. salminicola produces energy is still unclear. Huchon suggests it could draw oxygen from the cells in salmon or it could have evolved similar methods to those of single-celled organisms which scientists have documented in the past.

1. What can we learn about Henneguya salminicola?

A．It is an animal consisting of a cell.

B．It can still survive without oxygen.

C．It takes on a normal appearance.

D．It has a longer lifespan than salmon.

2. What is the main function of mitochondria?

A．To make cells breathe fast.

B．To help to produce oxygen.

C．To provide energy for cells.

D．To help cells absorb oxygen.

3. How did Huchon probably feel about the discovery?

A．Interested.

B．Satisfied.

C．Astonished.

D．Frightened.

4. What could be the most suitable title for the text?

A．The natural evolution of animal cells

B．Different kinds of life forms on earth

C．A research on single-celled organisms

D．A creature that doesn't breathe oxygen

8 . Not too many decades ago it seemed “obvious” both to the general public and to sociologists that modern society has changed people’s natural relations, loosened their responsibilities to kin (亲戚) and neighbors, and substituted in their place superficial relationships with passing acquaintances. However, in recent years a growing body of research   has revealed that the “obvious” is not true. It seems that if you are a city resident, you typically know a smaller proportion of your neighbors than you do if you are a resident of a smaller community. But, for the most part, this fact has few significant consequences. It does not necessarily follow that if you know few of your neighbors you will know no one else.

Even in very large cities, people maintain close social ties within small, private social worlds. Indeed, the number and   quality of   meaningful   relationships   do   not   differ   between more and less urban people. Small-town residents are more involved with kin than are big-city residents. Yet city dwellers compensate by developing friendships with people who share similar interests and activities. Urbanism many produce a different style of life, but the quality of life   does not differ between town and city. Nor are residents of large communities any likelier to display psychological symptoms of stress or alienation, a feeling of not belonging, than are residents of smaller communities. However, city dwellers do worry more about crime, and this leads them to a distrust of strangers.

These findings do not imply that urbanism makes little or no difference. If neighbors are strangers to one another, they are less likely to sweep the sidewalk of an elderly couple living   next door or keep an eye out for young trouble makers. Moreover, as Wirth suggested, there may be a link between a community’s population size and its social heterogeneity (多样性). For instance, sociologists have found much evidence that the size of a community is associated with bad behavior including gambling, drugs, etc. Large-city urbanities are also more likely than their small-town counterparts to have a cosmopolitan(见多识广)outlook, to display less responsibility to traditional kinship roles, to vote for leftist political candidates, and to be tolerant of nontraditional religious groups, unpopular political groups, and so—called undesirables. Everything considered, heterogeneity and unusual behavior seem to be outcomes of large population size.

1. Which of the following statements best describes the organization of the first paragraph?

A．An argument is examined and possible solutions given.

B．Two contrasting views are presented.

C．Research results concerning the quality of urban life are presented in order of time.

D．A detail description of the difference between urban and small-town life is given.

2. According to the passage, it was once a common belief that urban residents .

A．could not develop long-standing relationships.

B．did not have the same interests as their neighbors.

C．tended to be associated with bad behavior.

D．usually had more friends.

3. One of the   consequences   of   urban   life   is   that   impersonal   relationships   among   neighbors .

A．disrupt people’s natural relations.

B．make them worry about crime.

C．cause them no to show concern for one another.

D．cause them to be suspicious of each other.

4. It can be inferred from the passage that the bigger a community is____,

A．the better its quality of life

B．the more tolerant and open-minded it is.

C．the likelier it is to display psychological symptoms of stress.

D．the more similar its interests

9 . Old problem，new approaches

While clean energy is increasingly used in our daily life，global warming will continue for some decades after CO₂ emissions (排放) peak. So even if emissions were to begin to decrease today，we would still face the challenge of adapting to climate change. Here I will stress some smarter and more creative examples of climate adaptation.

When it comes to adaptation，it is important to understand that climate change is a process. We are therefore not talking about adapting to a new standard，but to a constantly shifting set of conditions. This is why, in part at least，the US National Climate Assessment says that：“There is no ‘one­size fits all’ adaptation.” Nevertheless，there are some actions that offer much and carry little risk or cost.

Around the world, people are adapting in surprising ways，especially in some poor countries. Floods have become more damaging in Bangladesh in recent decades. Mohammed Rezwan saw opportunity where others saw only disaster. His not­for­profit organization runs 100 river boats that serve as floating libraries，schools，and health clinics，and are equipped with solar panels and other communicating facilities. Rezwan is creating floating connectivity(连接) to replace flooded roads and highways. But he is also working at a far more fundamental level：his staff show people how to make floating gardens and fish ponds to prevent starvation during the wet season.

Elsewhere in Asia even more astonishing actions are being taken. Chewang Norphel lives in a mountainous region in India, where he is known as the Ice Man. The loss of glaciers (冰川) there due to global warming represents an enormous threat to agriculture. Without the glaciers, water will arrive in the rivers at times when it can damage crops. Norphel's inspiration came from seeing the waste of water over winter, when it was not needed. He directed the wasted water into shallow basins where it froze, and was stored until the spring. His fields of ice supply perfectly timed irrigation(灌溉) water. Having created nine such ice reserves, Norphel calculates that he has stored about 200，000m³ of water. Climate change is a continuing process, so Norphel's ice reserves will not last forever. Warming will overtake them. But he is providing a few years during which the farmers will, perhaps, be able to find other means of adapting.

Increasing Earth's reflectiveness can cool the planet. In southern Spain the sudden increase of greenhouses (which reflect light back to space) has changed the warming trend locally, and actually cooled the region. While Spain as a whole is heating up quickly, temperatures near the greenhouses have decreased. This example should act as an inspiration for all cities. By painting buildings white, cities may slow down the warming process.

In Peru, local farmers around a mountain with a glacier that has already fallen victim to climate change have begun painting the entire mountain peak white in the hope that the added reflectiveness will restore the life­giving ice. The outcome is still far from clear. But the World Bank has included the project on its list of “100 ideas to save the planet”．

More ordinary forms of adaptation are happening everywhere. A friend of mine owns an area of land in western Victoria. Over five generations the land has been too wet for cropping. But during the past decade declining rainfall has allowed him to plant highly profitable crops. Farmers in many countries are also adapting like this—either by growing new produce, or by growing the same things differently. This is common sense. But some suggestions for adapting are not. When the polluting industries argue that we've lost the battle to control carbon pollution and have no choice but to adapt, it's a nonsense designed to make the case for business as usual.

Human beings will continue to adapt to the changing climate in both ordinary and astonishing ways. But the most sensible form of adaptation is surely to adapt our energy systems to emit less carbon pollution. After all, if we adapt in that way, we may avoid the need to change in so many others.

1. The underlined part in Paragraph 2 implies ________．

A．adaptation is an ever­changing process

B．the cost of adaptation varies with time

C．global warming affects adaptation forms

D．adaptation to climate change is challenging

2. What is special with regard to Rezwan's project?

A．The project receives government support.

B．Different organizations work with each other.

C．His organization makes the best of a bad situation.

D．The project connects flooded roads and highways.

3. What did the Ice Man do to reduce the effect of global warming?

A．Storing ice for future use.

B．Protecting the glaciers from melting.

C．Changing the irrigation time.

D．Postponing the melting of the glaciers.

4. What do we learn from the Peru example?

A．White paint is usually safe for buildings.

B．The global warming trend cannot be stopped.

C．This country is heating up too quickly.

D．Sunlight reflection may relieve global warming.

5. According to the author, polluting industries should ________．

A．adapt to carbon pollution

B．plant highly profitable crops

C．leave carbon emission alone

D．fight against carbon pollution

6. What's the author's preferred solution to global warming?

A．Setting up a new standard.

B．Reducing carbon emission.

C．Adapting to climate change.

D．Monitoring polluting industries.

10 . Making beers on the moon might seem like a pipe dream to many, but for a group of students from the University of California at San Diego, there is a chance to take their research beyond Earth’s surface.

The Lab2Moon competition, held by TeamIndus, is offering students the chance to secure a spot on the TeamIndus rocket this year.

Taking craft beer to the next level, the students want to test whether it’s possible for yeast(酵母) to work and create beer on the moon. However, they believe the experiment is not just a creative concept for astronauts, it’s also important for the development of drugs and yeast-containing food, like bread.

“The idea started out with a few laughs among a group of friends,” said Neeki Ashari, a fifth-year bioengineering students at UC San Diego. “We all appreciate the craft beer. When we heard that there was an opportunity to design an experiment that would go up on India’s moonlander, w e thought we could combine our hobby with the competition by focusing on the practicality of yeast in outer space.”

The preparation work for the beer — up to the stage of adding yeast — will all be done on Earth, and rather than separating the fermentation ( 发酵) and carbonation stage of making beer, the team plans to combine them.

This removes the need to release CO2 accumulated in the process, which may result in cleanliness and safety issues out in space.

If selected, Team Original Gravity will be the first to make beer in outer space, and the fermentation will take place in a container no bigger than a soda can.

All teams competing for the place will showcase their ideas in Bangalore, India, in March.

Sadly, you won’t be enjoying moon beer in your local craft beer bar anytime soon, as no samples will be brought back. However, this small experiment could provide important data on just how practical it is for us to make and create our own resources on other planets and moons by learning how consumables (消耗品) behave in different environments.

1. How did the students feel when they got the chance to design the experiment ?

A．Excited.	B．Nervous.
C．Confident.	D．Casual.

2. What does the underlined word “This” in Paragraph 6 refer to?

A．The mixing of two stages.	B．Adding yeast on Earth.
C．The preparation work on Earth.	D．Fermentation and carbonation.

3. What can we learn about the experiment from the passage?

A．It has been designed based on similar experiments.

B．It’s quite competitive compared with other designs.

C．It’s design has already been approved by TeamIndus.

D．Its process was adapted to make it safer and greener.

4. What does the author think of the students ’ idea?

A．It seems like a pipe dream.	B．It’s extremely complicated.
C．It’s meaningful and hopeful.	D．It’s creative but impractical.