When you think of batteries, you’ll likely think about them powering up remote controls, cellphones, flashlights and toys. But some people carry a battery around in their body to power a pacemaker (起搏器). It isn’t really pleasant and easy to carry batteries because they need to be replaced so often and they can leak poisonous chemicals. A battery-powered pacemaker may become a thing of the past, thanks to a new technology developed by UCLA researchers: a biological supercapacitor (超级电容器), which is thinner than several hairs.
Teams of researchers at UCLA and the University of Connecticut published a paper in a journal explaining their new invention. The supercapacitor is made from a carbon material, and coated with human-like proteins that act as electrodes (电极). But what makes the device different is that it is powered by an energy harvester that changes body heat and movement in the blood into energy.
Those traditional pacemakers are six to eight millimeters thick. They are much bigger. The new supercapacitor, which, due to its lack of battery, is only one micrometer thick. This “little” feature could benefit the new pacemaker’s energy efficiency, researchers stated. Also, unlike other batteries used in medical treatments, the supercapacitor can bend and twist in the body without suffering damage.
Though they’ve not been widely used in the medical world, supercapacitors have the ability to serve as a safer and more efficient medical device than the traditional battery-operated devices, the researchers believe.
“In order to be effective, battery-free pacemakers must have supercapacitors that can get, store and transport energy. However, commercial supercapacitors are too slow to make them work,” said Maher El-Kady, a UCLA researcher and a co-author of the study. “Our research focused on the custom-designed supercapacitor to capture energy effectively, and finding a way to make it exist together successfully with the human body.”
1.What do we know about traditional pacemakers?
A.They are very popular with users.
B.They can do harm to the users’ bodies.
C.They need to be replaced quite often.
D.They are really convenient to carry around.
2.What is special about the new supercapacitor?
A.It has electrodes on the outside.
B.It is made from a kind of protein material.
C.It can transform the energy from the body.
D.It helps save the carriers’ money and energy.
3.Which of the following makes the new pacemaker energy-efficient?
A.The small size.
B.The small battery.
C.The energy harvester.
D.The bending and twisting characters.
4.What is the best title for the text?
A.A New Technology to Downsize Batteries.
B.A New Battery-free Pacemaker.
C.A Smaller Battery-powered Pacemaker.
D.A Great Contribution Made by UCLA Researchers.
高三英语阅读理解中等难度题
When you think of batteries, you’ll likely think about them powering up remote controls, cellphones, flashlights and toys. But some people carry a battery around in their body to power a pacemaker (起搏器). It isn’t really pleasant and easy to carry batteries because they need to be replaced so often and they can leak poisonous chemicals. A battery-powered pacemaker may become a thing of the past, thanks to a new technology developed by UCLA researchers: a biological supercapacitor (超级电容器), which is thinner than several hairs.
Teams of researchers at UCLA and the University of Connecticut published a paper in a journal explaining their new invention. The supercapacitor is made from a carbon material, and coated with human-like proteins that act as electrodes (电极). But what makes the device different is that it is powered by an energy harvester that changes body heat and movement in the blood into energy.
Those traditional pacemakers are six to eight millimeters thick. They are much bigger. The new supercapacitor, which, due to its lack of battery, is only one micrometer thick. This “little” feature could benefit the new pacemaker’s energy efficiency, researchers stated. Also, unlike other batteries used in medical treatments, the supercapacitor can bend and twist in the body without suffering damage.
Though they’ve not been widely used in the medical world, supercapacitors have the ability to serve as a safer and more efficient medical device than the traditional battery-operated devices, the researchers believe.
“In order to be effective, battery-free pacemakers must have supercapacitors that can get, store and transport energy. However, commercial supercapacitors are too slow to make them work,” said Maher El-Kady, a UCLA researcher and a co-author of the study. “Our research focused on the custom-designed supercapacitor to capture energy effectively, and finding a way to make it exist together successfully with the human body.”
1.What do we know about traditional pacemakers?
A.They are very popular with users.
B.They can do harm to the users’ bodies.
C.They need to be replaced quite often.
D.They are really convenient to carry around.
2.What is special about the new supercapacitor?
A.It has electrodes on the outside.
B.It is made from a kind of protein material.
C.It can transform the energy from the body.
D.It helps save the carriers’ money and energy.
3.Which of the following makes the new pacemaker energy-efficient?
A.The small size.
B.The small battery.
C.The energy harvester.
D.The bending and twisting characters.
4.What is the best title for the text?
A.A New Technology to Downsize Batteries.
B.A New Battery-free Pacemaker.
C.A Smaller Battery-powered Pacemaker.
D.A Great Contribution Made by UCLA Researchers.
高三英语阅读理解中等难度题查看答案及解析
When you think about creativity, it might be highly creative people like Mozart, da Vinci or Einstein who spring to mind. They were all considered to be "geniuses" for their somewhat unique talents that led to great achievements in their fields. Their type of creativity is what's known as "Big C creativity" and is not very common in everyday life. Not all of us can create works of art or music or scientific theories that are new to the world.
While we can't all be Mozart, DaVinci or Einstein, many people do enjoy creative activity—through hobbies such as painting or playing the piano. And these types of pursuits are often what people think of when asked what being creative looks like. Our finished pieces may not be comparable with the likes of the great masters, but often the process makes us feel happy, and the end result can be aesthetically pleasing.
On top of hobbies and interests, we all possess creative qualities that can help as we solve life's problems and make decisions. It is this type of creativity that enables us to plan different routes to get to the same destination, or fit in a trip to the supermarket when our schedule looks full. It might not sound very creative, but this aspect of creativity relies on our ability to consider options and assess their suitability. It also helps us make decisions based on personal experience or what we have learnt formally or informally. These examples are known as "Small C creativity" or "personal everyday creativity".
While Big C creativity is valued and celebrated, it is often Small C creativity that has allowed humans to develop over thousands of years. It sets us apart from other animals and it is also the type of creativity that can be developed through our educational system and workplace. Traditionally, creativity has been largely associated with the arts. Teachers are often able to give examples of creative activity in arts subjects, but find it harder to do so when asked to describe creativity in subjects such as science. But there is a growing realization that opportunities to be creative can be found across a broader range of subjects. For instance, engineering provides opportunities to be creative through problem solving, and history gives the opportunity to think creatively about why events happened and what motivated those involved
Research has shown that training teachers to ask particular types of questions can be one way to help encourage creativity across the curriculum. This is because looking for solutions to problems and explanations is a creative process. Our research also shows how it can be more helpful to talk about "thinking creatively" rather than “creativity". This is because people tend to see thinking creativity as independence of thought and a willingness to take risks and seek new perspectives. It is also seen as a way to perceive new relationships, make new connections, and generate new ideas.
The Durham Creativity Commission, set up by Arts Council England and Durham University, aims to find ways in which creativity, and specifically creative thinking, can play a larger part in our lives. We are working alongside people in education, as well as in arts and science communities, collecting their views on creativity and creative thinking. We will also be looking across these groups to determine whether or not there is a relationship between creativity and mobility, creativity and identity as well as creativity and well-being. We hope to be able to show that thinking creatively can not only be encouraged and furthered in a variety of fields, but also lead to positive outcomes on a personal, social and economic level.
In a rapidly changing world, creativity is important for people and society on many levels. It can help to generate personal satisfaction and be important for economic development. This is why creative thinking must be a key priority in educational environments. In the same way，creativity must also be recognized and encouraged in the workplace. Because, after all, it’s creative thinking that leads to problem solving and innovation in a range of areas.
1.Which of the following words can best describe "Big C creativity"?
A.Universal. B.Temporary.
C.Confidential. D.Extraordinary.
2.What does the underlined part in Paragraph 2 probably mean?
A.Few people are as creative as great geniuses.
B.Some of us can become great masters.
C.We seldom understand real geniuses.
D.We should not learn only from masters.
3.Why is "Small C creativity" important?
A.It is as rare as “Big C creativity".
B.It can turn our hobbies into careers.
C.It helps us produce great works of art.
D.It is fundamental to human development.
4.What can we learn from Paragraph 4?
A.Only geniuses have great creativity.
B.Artists are often more creative than scientists.
C.People can show their creativity in various fields.
D.It is almost impossible to think creatively in science,
5.What does thinking creatively mean?
A.Solving problems alone. B.Being open to alternatives.
C.Thinking in an artistic way. D.Making a difference to the world.
6.Which of the following might the Durham Creativity Commission agree with?
A.Creative thinking is beneficial both personally and socially.
B.People often overlook creative thinking in the workplace.
C.Courses on creativity will soon be offered in schools.
D.Your identity is usually decided by your creativity.
高三英语阅读理解困难题查看答案及解析
There are spare batteries in there, _______you need them．
A．when B．in case C．even if D．owing to
高三英语单项填空中等难度题查看答案及解析
Lawns（草坪）are some of the most common things in the world until you really start thinking about them. That’s when you realize that they make no sense. Why do people keep these uninteresting, pointless little plants outside their homes? They’re not beautiful like flowers, they don’t provide food and you have to take care of them constantly.
Israeli bestselling author Yuval Noah Harari thought these deeds were weird too. He looked into their history and ended up with an interesting story.
No one considered putting patches of grass outside their homes in ancient times. That changed in the Middle Ages, when French and English kings and nobles started putting patches of grass at their castle entrances.
“Well-kept lawns demand land and a lot of work,” wrote Harari in his book. “In exchange, they produce nothing of value.” Peasants could never afford to waste their time or land on lawns, so these lawns were a perfect status symbol（身份的象征）for nobility（高贵）.
When the Industrial Revolution began in the 18th and 19th centuries, the middle classes started being able to afford their own suburban（郊区的）houses. And guess what became the suburban status symbol? A perfectly kept lawn.
The popularity of lawns continued to grow, taking over public event spaces and sports. In the past, people played sports on all kinds of surfaces—dirt, ice, sand. But in the last couple centuries, they made the switch to green grass.
“Grass is nowadays the most widespread crop in the USA after corn and wheat,” Harari continued. Lawns spread beyond Europe and the U.S, and they’re now status symbols around the world.
Suburban people may not realize it, but they care for lawns just because centuries ago, French and English kings wanted to show off by intentionally planting something useless. It’s strange that people should continue to spend so much time and money on what’s really a leftover（遗留物）from the Middle Ages. When you plan your house, you can shake off（摆脱）the cultural leftover and imagine for yourself a rock garden or some other new creation.
1.What does the underlined word “weird” in paragraph 2 probably mean?
A.strange B.ordinary
C.beneficial D.attractive
2.What could lawns indicate in the 19th century?
A.Environmental awareness. B.People’s taste.
C.Cultural background. D.Personal wealth.
3.What is the author’s attitude towards keeping lawns?
A.Uncaring. B.Disapproving.
C.Favorable. D.unclear.
4.What might be the best title for the text?
A.The Function of Lawns B.The Value of Lawns
C.The History of Lawns D.The Management of Lawns
高三英语阅读理解中等难度题查看答案及解析
What comes into your mind when you think about robots? Do you imagine armies of evil metal monsters planning to take over the world? Or, perhaps of mechanical men who have been created as guards or soldiers by a mad genius? Or maybe you think of man- like robots who act, think, and look like human beings. In fact robots like these have more to do with science fiction films than with real life. In the real world robots are machines that do jobs which otherwise have to be done by people. Robots either operate by themselves or under the control of a person.
In a car factory, for example, robot machinery can put together and paint car bodies. On the sea bed remotecontrolled（遥控）underwater machines with mechanical arms can perform tasks too difficult for divers. Robot spacecraft can explore the solar system and send back information about planets and stars.
Many robots have computer brains. Some robots are fitted with cameras , sensors, and microphones which enable them to see, to feel, and to hear. And some robots can even produce electronic speech.
All this does not mean that a robot can think and behave like a human being. Present day robots have to be programmed with a good deal of information before they can carry out even simple tasks.
44．Robots in real life________.
A. can behave like human beings B. have the ability to control the world
C. can think by themselves D. can help us with a lot of work
45．According to this article, which of the following is not true about robots in the real world?
A. Some robots are as creative as artists. B. Some robots can help manufacture cars.
C. Some robots can see and hear. D. Some robots can explore outer space.
46．Robots can perform many tasks for man because________.
A. they have intelligence B. they are supplied with computer programs
C. they can imitate human beings D. they have the ability to learn new things
47．The robots in science fiction films and those in real life differ mainly in________.
A. mentality B. appearance C. material D. size
高三英语阅读理解简单题查看答案及解析
Can you think of some casespeople are likely to tell lies?
A．that B．as C．where D．when
高三英语单项填空简单题查看答案及解析
It is believed that some of animals think a great deal. Many of them are like children in their sports. Some birds are very lively in their sports; and the same is true with some insects. The ants, hardworking as they are, have their times for play. They run races; they wrestle; and sometimes they have mock fights together. Very busy must be their thoughts while engaged in these sports.
Animals think much while building their houses. The bird searches for what it can use in building its nest, and in doing this it thinks. The beavers think as they build their dams and their houses. They think in getting their materials, and also in arranging them, and in plastering them together with mud. Some spiders build houses which could scarcely have been made except by some thinking creature.
As animals think, they learn. Some learn more than others. The parrot learns to talk, though in some other respects it is quite stupid. The mocking bird learns to imitate a great many different sounds. The shepherd dog does not know as much about most things as some other dogs, and yet he understands very well how to take care of sheep.
Though animals think and learn, they do not make any real improvement in their ways of doing things, as men do. Each kind of bird has its own way of building a nest, and it is always the same way. They have no new fashions, and learn none from each other.
It is plain that, while animals learn about things by their senses as we do, they do not think nearly as much about what they learn, and this is the reason why they do not improve more rapidly. Even the wisest of them, as the elephant and the dog, do not think very much about what they see and hear. Nor is this all. There are some things that we understand, but about which animals know nothing. They have no knowledge of anything that happens outside of their own observation. Their minds are so much unlike ours that they do not know the difference between right and wrong.
1.Why does the author mention that some birds and insects are very lively in their sports?
A. To illustrate that some animals probably think in the sports.
B. To tell us that some birds and insects are more lively than others.
C. To show us that ants are the cleverest insects in the animal kingdom.
D. To attract readers by introducing some interesting facts about animals.
2.“Animals think much while building their houses” because ________.
A. they have to communicate with each other in getting their material
B. they have to calculate something to arrange all the material
C. no animals have a must to build a “house” except some thinking creatures
D. it is unimaginable to build “houses” without thinking work involved
3.The underlined word "plain" in Paragraph 5 can be replaced by ______.
A. flat B. clear
C. vital D. reasonable
4.The author will probably agree that ________.
A. animals can’t think as a matter of fact
B. animals can’t really learn to do something
C. animals can think and learn but limitedly
D. each kind of animal has their own language
高三英语阅读理解困难题查看答案及解析
阅读下面短文，并根据题目要求用英语回答问题(请注意问题后的字数要求)。
When people think of New York City, most of them probably picture the attractive lifestyles of the rich and famous or think of Broadway, Times Square and other tourist attractions. However, there is another side of New York City. The summer after tenth grade, I went with my group on a mission trip to New York City for a week.
I had always known that poverty existed in major cities, but I had never seen it to a degree as high as we did there. We worked at several different locations with our small groups. One day, we served at a soup kitchen and what I saw astounded me. I couldn't believe my eyes. We saw people from all walks of life. We met people who came there because they had no job, no home and no money.
Another day, we volunteered at a homeless shelter. We helped people there do some cleaning and spent time talking to them and listening to their stories. It was incredible to see how thankful they were to us for just spending a couple of hours talking to them.
Every person we met on that trip had a unique story. Whatever their stories were, there was a common thread we saw in them — hope and thanks. These were people who had nothing and yet they were so hopeful about their futures and they were thanking us.
My experience during that summer changed my life. I used to picture my future as containing a big house and a lot of money, but now I see my future as helping others. After college, I would really like to work for some sort of global aid organization that deals with social issues, such as poverty and homelessness.
1.What do most people have in mind when thinking of New York City? ( No more than 10 words )
________________
2.What does the underlined word “astounded” in Paragraph 2 mean? ( 1 word )
________________
3.What did the author discover in the people at the homeless shelter? ( No more than 15 words )
________________
4.What kind of organizations does the author want to work for after college? ( No more than 10 words )
________________
5.How does the author’s experience inspire you? ( No more than 20 words )
________________
高三英语阅读表达中等难度题查看答案及解析
When we think about happiness, we usually think of something extraordinary, a pinnacle(顶点) of sheer(纯粹的) delight. And those pinnacles seem to get rarer the older we get.
51 I remember playing police and robbers in the woods, getting a speaking part in the school play. Of course, kids also experience lows, but their delight at such peaks of pleasure as winning a race or getting a new bike is unreserved.
For teenagers, or people under 20 the concept of happiness changes. 52 I can still feel the pain of not being invited to a party that almost everyone else was going to. I also remember the great happiness of being invited at another event to dance with a very handsome young man.
In adulthood the things that bring great joy—birth, love, marriage—also bring responsibility and the risk of loss.53 For adults, happiness is complex.
54 But I think a better definition of happiness is “ the ability to enjoy something”. The more we can enjoy what we have, the happier we are. It's easy to overlook the pleasure we get from loving and being loved, the company of friends, the freedom to live where we please, even good health.
While happiness may be more complex for us, the solution is the same as ever. Happiness isn't about what happens to us; it’s the ability to find a positive for every negative, and view a difficulty as a challenge.55
| A．Love may not last; loved ones die. |
| B．For a child, happiness has a magic quality. |
| C．Happiness is the meaning and the purpose of life. |
| D．Being happy doesn’t mean that everything is perfect. |
E. The dictionary defines “happy” as “lucky” or “fortunate”.
F. It's not wishing for what we don't have, but enjoying what we do possess.
G. Suddenly it’s conditional on such things as excitement, love, and popularity.
高三英语信息匹配中等难度题查看答案及解析
How do parents teach children about money？How do you teach them to get rich？Likely，you do not have an answer because you would not call yourself rich.1.Here is what self-made millionaires tell their kids about wealth.
You deserve to have wealth.
This statement could be read as arrogant（傲慢的），when in fact it comes from a place of humbleness. Self-made millionaires teach their children that they deserve to be rich not because they were born into the right family but because they work hard to solve other people's problems.2.
3.
Having money gets rid of tons of the issues which people find themselves in when they do not have it. Not happy with your current living situation？You can pack up and leave. Do you hate your job？Why not start your own business. Upset about a global disaster？Donate what you can to the cause. Money allows you to enjoy life on your own terms.
Nothing is guaranteed.
4.They must create their own lives and futures. It's important to teach kids about self-reliance. Legally，kids have the right to have more and more things，but it's important to teach against these values.
Solve problems to earn your wealth.
In a free market economy，everyone is looking for a way to make money. If you come up with an idea to solve the world's problem，there will be a demand for it. The bigger the problem the more difficulty you might have getting it off the ground.5.Pairing your skills with problem solving could be the way towards wealth.
A. A big lesson self-made millionaires teach their kids is that the world owes them nothing.
B. Having wealth allows you to do something for others to earn your place.
C. When do you start teaching your children about money？
D. How do the rich approach this question？
E. But it could also make you very rich.
F. Even the blind can see money.
G. Wealth leads to freedom.
高三英语七选五中等难度题查看答案及解析