Think about a remote control. Something so si...

Think about a remote control. Something so simple in function is seemingly capable of invisible magic to most of us. Only few have any real idea of why a remote control works. The rest of us just assume it should. And the longer a given technology exits, the more we take it for granted.

Consider for a moment a screen showing modern remote control users versus the first remote control users： the original users would be carefully aiming the remote directly at the television, reading the names of the buttons, and intentionally pressing the button. The modern users would be leaning on a sofa, pointing the remote any which way, and instinctively feeling for the button they desired.

Humans are known for being handy with tools, so it is no surprise that we get so comfortable with our technology. However, as we become increasingly comfortable with how to use new technologies, rather than being humbled by is originality, we consumers often become unfairly demanding of what our technology should do for us Once wonderful new inventions （such as televisions） quickly became commonplace. The focus of consumer attitudes towards them changed from gratitude with respect to discriminating preference. Televisions needed to be bigger and have a higher resolution. Video games needed to be more realistic. Computers needed to be more powerful yet smaller in size.

For children of the last twenty years born into this modern life, these technological wonders seem like elements of the periodic （周期的） table： a given aspect that is simply part of the universe. Younger generations don't even try to imagine life without modern conveniences. They do not appreciate the unprecedented （史无前例的） technology that is in their possession； rather, they complain about the ways in which it fails to live up to ideal expectations. "My digital video recorder at home doesn't allow me to program it from my computer at work. "

If it sounds as though were never satisfied, we aren't. Of course our complaints do actually motivate engineers to continually refine their products. After all, the expectation is that someone, somewhere is working on how to make the existing product even better.

1.What can we infer from paragraph 2？

A.Modern remote controls have no button and instructions.

B.Consumers' behavior towards new technologies changes over time.

C.Remote controls have become far more effective over the years.

D.Modern remote controls are designed more user﹣friendly.

2.What best fit into consumers' "discriminating preference"？

A.Less realistic video games.

B.Wanting to make sacrifices.

C.Needing to understand technology.

D.More powerful smartphones.

3.What does the underlined statement in paragraph 4 mean？

A.The inspiration of modern technology comes from chemistry.

B.Younger generation loam technology while they learn chemistry.

C.Children naturally take modern technology for granted.

D.Children regard many technological inventions as remarkable.

4.The tone of the passage can best be described as　　 .

A.blessing

B.approving

C.satisfied

D.critical

高三英语阅读选择困难题查看答案及解析

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

请认真阅读下列短文,并根据所读内容在文章后表格中的空格里填人一个最恰当的单词。

The term remote management is used to describe any process in which he controlling device is not physically attached to the actual unit. There are four aspects to this process: the communication method, the level of control, the operator training and the performance(性 能) issues. The remote management system is primarily used to improve safety and increase productivity.

Remote management can be applied to many fields such as the construction, mining, transportation and information technology industries. There are more and more devices that can be managed remotely because of the improved quality of computer programming and system designs. The increased leverage(影响力) of this technology is providing new opportunities for machine and heavy equipment design.

The communication method used in a remote management system is dependent upon the intended application. For example, communication with a drilling machine in a mine cannot be based on a clear line of sight between the operator and the machine. Instead, a dedicated radio frequency or wireless communication channel is needed. The number of other machines and units controlled via a remote management system has a huge impact on the effectiveness of the communication method. Each unit must be controlled separately, with no interference from other devices,

The level of control provided via remote management is also very important. Initially, most of the equipment was very large, and the technology was used to get close enough for manual control. However, operators now require a high degree of precision and control. The tools used to control the equipment are so sophisticated(精良的)that they can be used to create a program or to move the machine in very small progress.

The remote management operator typically sits in a separate location and is responsible for controlling the equipment based on video feed similar information. The training required to work with this type of equipment is usually provided by the employer, because every system is different. The increased use of these tools has resulted in the development of short courses and training programs designed specifically to increase the skill level of the operator.

One of the challenges of remote management is related to overall performance. Operator expectations can be excessively influenced by images in the media of remote controlled robots that can be easily controlled with great precision. In fact, a significant amount of programming and effort is required to complete a process with a remote controlled device. Most of the adjustments that an operator would make require additional time to carry out in this model.

高三英语任务型阅读中等难度题查看答案及解析

Do what you love and love what you do, and success will come? Well, we wish. 1.It takes more than just passion to succeed in anything.

Passion is just emotion; care is an action.

Wishing hard and wanting something really badly won’t give you anything. Passion is a barely controllable emotion, and emotion is not always reliable. 2.

In today’s world where people always talk about finding your passion, it still seems vague (模糊的) to many. On the other hand, if you’re asked to find something you care about, it’s easier for you to take action.

3.

There’s a lot of work to do besides being enthusiastic. For example, you can be enthusiastic about painting, but if you don’t have any art sense and painting skills, you can hardly become an expert in painting. 4.The belief that you’ll do it well anyway as long as you like it is just an illusion.

Learn not just what you care about, but what’s around that too.

When you’ve got your focus, try to map out the skills you need to get better at that. When you have the learning plan ready, apply that course you need, get yourself the tools required and start learning and practicing.

Success is a way to go, but you can start right now.

5.But if you’ve already got your passion, it will be good enough to make that your foundation and motivation to keep moving. Start mapping out the skills you need and take actions, Instead of passively letting your passion wander around, be active and do something that will push you forward.

A.Care is different, it implies actions.

B.“Like it” doesn’t mean “Good at it”.

C.Passion alone doesn’t guarantee success.

D.However, reality is not as simple as we want it to be.

E.You are good at something and you need the world to know.

F.Desire to make a difference in the world with your strengths.

G.To become an expert, you need to be always learning and improving your skill.

高三英语七选五中等难度题查看答案及解析

A team of engineers at Harvard University has been inspired by Nature to create the first robotic fly. The mechanical fly has become a platform for a series of new high-tech integrated systems. Designed to do what a fly does naturally, the tiny machine is the size of a fat housefly. Its mini wings allow it to stay in the air and perform controlled flight tasks.

“It’s extremely important for us to think about this as a whole system and not just the sum of a bunch of individual components,” said Robert Wood, the Harvard engineering professor who has been working on the robotic fly project for over a decade. A few years ago, his team got the go-ahead to start piecing together the components. “The added difficulty with a project like this is that actually none of those components are off the shelf and so we have to develop them all on our own,” he said.

They engineered a series of systems to start and drive the robotic fly. “The seemingly simple system which just moves the wings has a number of interdependencies on the individual components, each of which individually has to perform well, but then has to be matched well to everything it’s connected to,” said Wood. The flight device was built into a set of power, computation, sensing and control systems. Wood says the success of the project proves that the flying robot with these tiny components can be built and manufactured.

While this first robotic fly is linked to a small, off-board power source, the goal is eventually to equip it with a built-in power source, so that it might someday perform data-gathering work at rescue sites, in farmers’ fields or on the battlefield. “Basically, it should be able to take off, land and fly around,” he said.

Wood says the design offers a new way to study flight mechanics and control at insect-scale. Yet, the power, sensing and computation technologies on board could have much broader applications. “You can start thinking about using them to answer open scientific questions, you know, to study biology in ways that would be difficult with the animals, but using these robots instead,” he said. “So there are a lot of technologies and open interesting scientific questions that are really what drives us on a day to day basis.”

1.Which of the following statements was the difficulty engineers met while making the robotic fly?

A.They did not have sufficient fund.

B.No ready-made components were available.

C.There was no model in their mind.

D.It was hard for them to assemble the components.

2.What do we know about the robotic fly?

A.The robotic fly has been put into wide application.

B.The robotic fly consists of a flight device and a control system.

C.The robotic fly can collect information from many sources.

D.The robotic fly can fly well with the cooperation of individual components.

3.Which of the following can be learned from the passage?

A.The robotic fly can replace animals in some experiments.

B.Animals are not allowed in biological experiments.

C.The robotic fly is designed to learn about insects.

D.There used to be few ways to study how insects fly.

4.Which of the following might be the best title of the passage?

A.The Development of Robotic Fly

B.Robotic Fly Promotes Engineering Science

C.Harvard’s Efforts in Making Robotic Fly

D.Robotic Fly Imitates Real Life Insect

高三英语阅读选择困难题查看答案及解析

Aging happens to all of us, and is widely thought of as a natural part of life. It would seem silly to call such a thing a “disease.”

On the other hand, scientists are increasingly learning that aging and biological age are two different things, and that the former is a key risk factor for conditions such as heart disease, cancer and many more. In that light, aging itself might be seen as something treatable, the way you would treat high blood pressure or a vitamin deficiency(不足).

Biophysicist Alex Zhavoronkov believes that aging should be considered a disease. He said that describing aging as a disease creates incentives(动机) to develop treatments.

“It unties the hands of the pharmaceutical (制药的) industry so that they can begin treating the disease and not just the side effects,” he said.

“Right now, people think of aging as natural and something you can’t control,” he said. “In academic circles, people take aging research as just an interest area where they can try to develop interventions（介入，参与）. The medical community also takes aging for granted, and can do nothing about it except keep people within a certain health range.”

But if aging were recognized as a disease, he said, “It would attract funding and change the way we do health care. What matters is understand that aging is curable.”

“It was always known that the body accumulates damage,” he added. “The only way to cure aging is to find ways to repair that damage. I think of it as preventive medicine for age-related conditions.”

Leonard Hayflick, a professor at the University of California, San Francisco, said the idea that aging can be cured implies the human lifespan can be increased, which some researchers suggest is possible. Hayflick is not among them.

“There’re many people who recover from cancer, stroke, or heart disease. But they continue to age, because aging is separate from their disease,” Hayflick said. “Even if those causes of death were removed, life expectancy would still not go much beyond 92 years.”

1.What do people generally believe about aging?

A.It should cause no alarm whatsoever.

B.They just cannot do anything about it.

C.It should be regarded as a kind of disease.

D.They can delay it with advances in science.

2.What does Alex Zhavoronkov think of “describing aging as a disease”?

A.It will urge people to take aging more seriously.

B.It will greatly help reduce the side effects of aging.

C.It will free pharmacists from the conventional beliefs about aging.

D.It will motivate doctors and pharmacists to find ways to treat aging.

3.What do we learn about the medical community?

A.They now have a strong interest in research on aging.

B.They differ from the academic circles in their view on aging.

C.They can contribute to people’s health only to a limited extent.

D.They have ways to intervene in people’s aging process.

4.What does Professor Leonard Hayflick believe?

A.The human lifespan cannot be lengthened.

B.Aging is hardly separable from disease.

C.Few people can live up to the age of 92.

D.Heart disease is the major cause of aging.

高三英语阅读选择中等难度题查看答案及解析

Residents in the remote area have ________ about what the disease is all about, not to mention prevention and treatment

高三英语单项填空简单题查看答案及解析

I promised Michael I wouldn’t mention this until the season was over. Now l think it's time.

Early last season, I wrote a column about an art of kindness I had seen Jordan do to a disabled child outside the stadium. After it ran，I got a call from a marl in the western suburbs. He said，“I read what you wrote about Jordan. but I thought I should tell you another thing I saw. ”

Here it comes, I thought. It always does. Write something nice about a person, and people call you up to say that the person is not so nice.

A few weeks later Jordan and I were talking about something else before a game, and I brought up what the man had said. Was the man right? Had Jordan really been talking to those two boys in that poor and dirty neighborhood?

"Not two boys," Jordan said. "But four."

And he named them. He said four names. And what did they talk about?

"Everything,” Jordan said. " Anything. I’ve asked to see their grades so that I can check to see if they're paying attention to their study. If it turns out that one or two of them may need teaching, I make sure they get it."

It's just one more part of Michael Jordan's life one more thing that no one knows about, and one more thing Jordan does fight for. The NBA season is over now, and those boys have their memories. So do J! When the expert reviewers begin to turn against Jordan as they surely will, I'll think about those boys under the streetlight, waiting for the man they know to come. For someone they can depend on.

1.The writer wrote this story about Jordan and his young friends because ______

A.he thought highly of Jordan's deeds

B.he hated to see Jordan do something bad

C.he believed it was time to help the disabled

D.he felt sure he needn't keep the promise then

2.A man in the western suburbs made a call to ______

A.know why Jordan stopped in a bad area

B.get a chance to become famous himself

C.let the writer know Jordan was not that nice

D.offer an example to show how Jordan helped others

3.Jordan talked with the boys because he ______.

A.needed their support

B.had promised to do so

C.liked to teach them to play basketball

D.wanted to make sure they all studied well

4.The text implies that Jordan is ______.

A.an excellent basketball player

B.good at dealing with problems of life

C.always ready to make friends with young people

D.willing to do whatever he can for the good of society

高三英语阅读选择中等难度题查看答案及解析

One of the most fundamental changes brought about in the last decade is the rise of remote learning. With the global climate crisis and health pandemics, remote learning has become even more relevant today. Schools, universities and corporates can continue affording education and training by remote technology in the time of social distancing due to the COVID-19 crisis. 1.

Learn Anywhere, Anytime

Gone is the need to be on campus at a specific time of day and remain there for the duration of numerous classes. 2.. More importantly, it has also made learning a practical choice for many rural communities who are unable to travel the vast distances to school every day and to remote teams working for companies located afar.

3.

When it comes to learning, one size doesn’t fit all People have varied learning styles that change depending on the nature of the content they are trying to absorb. E-Learning allows learners to personalize their education, focusing on areas that need greater attention in more detail. Also, rather than being a one-way path where the learner listens and takes in information, online training means that learners can pursue areas that interest them in more detail.

Better Engagement

Keeping learners engaged throughout the training is one of the key struggles. One of the strengths of E-Learning is the diverse nature in which the course content is delivered. 4. Some online learning communities allow trainers to provide multimedia recording to make training more engaging. With the game engine, they also have the option to gamify content and include rewards once sections are completed for young employees and fresh graduates who might have just passed out from school and are still transitioning to the corporate world. 5.

A.E-Learning gives people the flexibility to be able to learn at home, anytime they want.

B.Personalized Learning Experience

C.Learn more in detail

D.Learners are now used to and expect interactivity.

E.Nearly 30 percent of learners, or more than six million students, having taken at least one course online.

F.Overall, there are a few core reasons to opt (选择) for remote learning.

G.Quizzes, polls, and discussion boards also mean trainees get to discuss content and interact with one another.

高三英语七选五中等难度题查看答案及解析

Everybody, at some point in their lives, has experienced failure. It could be something as simple as not getting the job you wanted, or getting fewer marks even after hard work. But what makes you is not your failure, but how you get back up after being hit.

Once, a young school boy was caught in a fire accident in his school and was assumed that he would not live. His mother was told that he was sure to die, for the terrible fire had destroyed the lower half of his body. Even if he were to survive, he would be lame throughout his life.

But the brave boy did not want to die nor did he want to be lame.　 Much to the amazement of the doctor, he did survive. But unfortunately from his waist down, he had no motor ability. His thin legs just hung there, lifeless. Eventually he left the hospital. But his determination to walk was unshakable. At home, when he was not in bed, he had to stay in a wheelchair. One day, he threw himself from the chair and pulled himself across the grass, dragging his legs behind him. He reached the fence, raised himself up and then began dragging himself along the fence, firmly determined. He did this every day, with faith in himself that he would be able to walk unaided. With his iron determination, he did develop the ability to stand up, then to walk on and off, then to walk by himself and then to run.

He began to walk to school, and then run to school, to run for the joy of running. Later in college he was on the track team.

In February 1934, in New York City's Madison Square Garden, this young man who was not expected to survive, who would surely never walk, who could never hope to run - this determined young man, Dr. Glenn Cunningham, ran the world's fastest mile.

A good example of the power of positive thinking and faith in one's self, Glenn Cunningham continues to be an inspiration for many, and his story, a brilliant evidence to how one can bounce back even when all difficulties are piled against one, to the degree that death seemed the preferable option.

1.The first paragraph is intended to ________

A. present an argument

B. make preparations for statement

C. arouse readers' interest

D. function as a brief introduction

2.What was the doctor's opinion about Glenn?

A. Glenn was able to walk with his own great effort.

B. Great determination could make a difference to Glenn.

C. There was a slim chance that Glenn could survive.

D. Glenn could live a normal life with the upper halt" of his body.

3.What do we know about Glenn?

A. Glenn took recovery exercise in hospital.

B. Glenn inspired people with his moving story.

C. Glenn won the first place in Marathon.

D. Glenn organized a track team in college.

4.What can be a suitable title for the text?

A. Strengthen determination

B. Stand up after failure

C. Go after dreams

D. Face difficulty bravely

高三英语阅读理解中等难度题查看答案及解析