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1 . A medical capsule robot is a small, often pill-sized device that can do planned movement inside the body after being swallowed or surgically inserted. Most models use wireless electronics or magnets or a combination of the two to control the movement of the capsule. Such devices have been equipped with cameras to allow observation and diagnosis, with sensors that “feel,” and even with mechanical needles that administer drugs.

But in practice, Biomechatronics engineer Pietro Valdastri has found that developing capsule models from scratch (从头开始) is costly, time-consuming and requires advanced skills. “The problem was we had to do them from scratch every time,” said Valdastri in an interview. “And other research groups were redeveloping those same modules from scratch, which didn’t make sense.”

Since most of the capsules have the same parts of components: a microprocessor, communication submodules, an energy source, sensors, and actuators (致动器), Valdastri and his team made the modular platform in which the pieces work in concert and can be interchanged with ease. They also developed a flexible board on which the component parts are snapped in like Legos. The board can be folded to fit the body of the capsule, down to about 14 mm. Additionally, they compiled (编译) a library of components that designers could choose from, enabling hundreds of different combinations. They arranged it all in a free online system. Designers can take the available designs or adapt them to their specific needs.

“Instead of redeveloping all the modules from scratch, people with limited technological experience can use our modules to build their own capsule robots in clinical use and focus on their innovation,” Valdastri said.

Now, the team has designed a capsule equipped with a surgical clip to stop internal bleeding. Researchers at Scotland’s Royal Infirmary of Edinburg have also expressed interest in using the system to make a crawling capsule that takes images of the colon(结肠). One research group, led by professors at the Institute of Digestive Disease of the Chinese University of HongKong, is making a swimming capsule equipped with a camera that pushes itself through the stomach.

One limitation of Valdastri’s system is that it’s only for designing models. Researchers can confirm their hypotheses (假设) and do first design using the platform, but will need to move to a custom approach to develop their capsules further and make them practical for clinical use.

1. According to the passage, Valdastri and his team created the platform to ________.
A.adopt the latest technologies
B.make their robots dream come true
C.help build specialized capsule robots
D.do preciser observation and diagnosis
2. What does the underlined phrase “work in concert” mean in Para.3?
A.Perform live.B.Run independently.
C.Act in a cooperative way.D.Carry on step by step.
3. What can be learnt from the passage?
A.Valdastri’s system can’t provide a complete capsule creation.
B.The modular platform is more useful than a custom approach.
C.The capsules can move in human’s body automatically.
D.It costs more to module the capsules on the board.
2021-05-01更新 | 1058次组卷 | 1卷引用:北京市丰台区2021届高三二模英语试题
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2 . Recycling Electronic Waste

When Alex Lin was 11 years old, he read an alarming article in the newspaper which said that people were burying old computers in backyards, throwing TVs into streams, and dumping (丢弃) cell phones in the garbage. This was dangerous because e-waste contains harmful chemicals that can leak into the environment, getting into crops, animals, water supplies—and people.

Alex was really worried and decided to make it next project for WIN—the Westerly Innovations Network. Alex and six of his friends had formed this organization to help solve community problems two years before.

But what could they do about this project with e-waste? The team spent several weeks gathering information about the harmful chemicals in e-waste and their effects on humans. They learned how to dispose (处置) of e-waste properly and how it could be recycled. Then, they sent out a survey and found only one in eight knew what e-waste was, let alone how to properly dispose of it.

Alex and his friends went into action. They advertised in the local newspaper and distributed notices to students, asking residents to bring their unwanted electronics to the school parking lot. The drive lasted two days, and they collected over 9, 500 kilograms of e-waste.

The next step was to set up a long-term e-waste drop-off center for the town. After some research, they’d learned that reusing is the best way to deal with electronic devices and it is seven times more efficient than recycling. So, they began learning to refurbish (翻新) computers themselves and distributed them to students who didn’t have their own. In this way, they could help students in the area and protect the environment at the same time.

For a lasting solution to e-waste, the drop-off center wasn’t enough. Laws would have to be passed. In 2016, WIN helped push for an e-waste bill in their town, which required companies that manufactured or sold electronics to take back e-waste. The bill clearly forbids the dumping of e-waste.

Because of the work of WIN, more and more people, like Alex and his team, are getting the message about safe disposal of e-waste. As Alex says, “Today’s technology should not become tomorrow’s harmful garbage.”

1. What was Alex’s worry after he read the article?
A.The littering of e-waste.B.The recycling of plastic.
C.The change of environment.D.The overuse of old computers.
2. What did Alex do to start the project?
A.Set up WIN.B.Collect information.
C.Ask friends for help.D.Carry out a survey.
3. Which can best describe the way Alex and his team did their work?
A.Traditional.B.Competitive.
C.Scientific.D.Convenient.
4. What message does the story convey?
A.There is no end to perfection.
B.Success comes through failure.
C.Every positive attitude has a reward.
D.Young people can make a big difference.
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3 . According to statistics published by the BPI (Buying Power Index) a couple of months ago, digital streaming (流媒体) now accounts for 80 percent of the music consumption in the UK. Despite the incredible growth of online streaming platforms like iTunes, Apple Music and Tidal over the past 15 years, a more traditional medium has also seen a return of interest and sales in the music industry. In 2020, almost one in five of all albums purchased in the UK is vinyl (黑胶唱片), and it has once again become the most popular physical musical medium.

With digital streaming so easy and convenient, why are so many people drawn to traditional records? Some experts claim that vinyl is a physical medium for experiencing music, something tangible (有形的) to hold and own. For most people, having something tangible and interacting with it gives depth to the experience of music. Listening to an album and touching it the way the artist intended can make them feel more connected to the music and the artist. Records are physical products that can be not only displayed but also gifted, shared, traded and passed down through generations.

Sound quality is another hot topic. A lot of music lovers feel that the analogue sound (模拟声音) vinyl offers is superior to modern digital audio, particularly with regards to the compressed formats streaming platforms use. There’s a common belief that old-school analogue audio has a warmer, fuller sound than digitised music. For vinyl followers, the very defect traditional recorders often have, such as the familiar crackle (劈啪作响) when the record starts, bring the music to life in a different way.

There’s a ritualistic aspect to vinyl that a lot of people are drawn to, too. The act of putting a record on—carefully removing the record from the sleeve, placing it on the record player and gently dropping the needle on the right groove (凹槽)—is a more assiduous (一丝不苟的), mindful way of engaging with music. When you’re listening to vinyl, you can’t tap a button and go about your day while the streaming service provides hours of music. You need to stay close to the record player to move the needle and flip the record over.

It’s clear that the vinyl interest is well underway, and vinyl records are truly making a comeback. In an increasingly digital society, there’s something to be said for analogue experiences. Perhaps one of the great things about being alive in the 21st century is our ability to have the best of both worlds—the timeless appeal of physical records alongside the easy access to vast music libraries that streaming offers.

1. What are the statistics published by the BPI used to show?
A.An increase in music consumption.
B.The recovery of music industry.
C.A comeback of a physical medium.
D.The acceptance of online streaming.
2. According to some experts, why does vinyl interest many people?
A.It attracts people by its realistic feel.
B.It offers simple access to different music.
C.It shares a new way to enjoy music.
D.It provides people with perfect sound effect.
3. The underlined word “ritualistic” in Para.4 means something ______.
A.Overlooked by society.
B.Updated very frequently.
C.Performed as part of a ceremony.
D.Kept for a long time without changing.
4. How does the writer feel about the future development of music medium?
A.Traditional records will get underway.
B.The analogue experiences may matter more.
C.Vinyl sales will boom with technological advance.
D.There should be a good mix of old and new.

4 . At university, when I told people I was studying for a history degree, the response was almost always the same, “You want to be a teacher?” No, a journalist. “Oh. But you’re not majoring in communications?”

In the days when a university education was a privilege, perhaps there wasn’t the assumption that a degree had to be a springboard directly into a career. Those days are long gone. Today, a degree is all but a necessity for the job market, one that more than halves your chances of being unemployed. Still, that alone is no guarantee of a job—and yet we’re paying more and more for one.

Given those costs, most of us want to maximize that investment — and that can lead to a plug-and-play type of approach to higher education. Want to be a journalist? Study journalism, we’re told. A lawyer? Pursue pre-law. Not totally sure? Go into STEM (Science, Technology, Engineer and Maths) — you can become an engineer or an IT expert. And no matter what you do, forget the humanities, such as history, philosophy and languages.

It’s true that the humanities come with a higher risk of unemployment, but the risk is slighter than you would imagine. For young people in the U.S. , the unemployment rate of those with humanities degrees is four percent, just a little more than that of engineering degree holders. Lower salaries may not be caused by the degree itself either. The gender pay gap persists in the humanities, whose graduates are more likely to be female. Is it any wonder then that language teachers tend to make less than engineers?

According to LinkedIn’s research on the most sought-after job skills by employers for 2019, the ability to communicate and get along with people, to understand what’s on other people’s minds, and to do full-strength critical analysis were all valued and appreciated. It goes without saying that you can be an excellent communicator and critical thinker without a humanities degree. And any good university education, not just one in English or psychology, should sharpen these abilities further. But few courses of study are quite as heavy on reading, writing, speaking and critical thinking as the humanities — whether that’s by debating other students in a seminar, writing a thesis paper or analyzing poetry.

The whole question of whether a student should choose STEM versus the humanities might be misguided to begin with. The headlines most of us see don’t help. Whatever a student pursues in university, it must be something that they are not only good at, but interested in. Even if it means pursuing a “useless” degree — like one in humanities.

1. Why are people paying more and more for a degree?
A.Because people need a degree to further their career.
B.Because university education is considered a privilege.
C.Because a degree is viewed as a must for landing a job.
D.Because their interest can be developed in university.
2. The author mentioned a plug-and-play type of approach to show ________.
A.a tip for choosing a major
B.the importance of higher education
C.a problem that exists among STEM graduates
D.the reason why people overlook the humanities
3. According to the author, what is the benefit of majoring in humanities?
A.A comparatively high salary after graduation.
B.Better chances of getting rid of gender prejudice.
C.A better communicative skill than science students.
D.More exposure to the training of language and thinking.
4. What is the author's attitude towards the pursuit of humanities?
A.Doubtful.B.Optimistic.
C.Objective.D.Concerned.
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5 . Monster Zoo

Monster Zoo is one of the largest zoos in the world, covering more than 15 km squares. It is home to more than 50 species of rare and native animals. The zoo is located 70 km from the city New South Australia.

Monster zoo was founded in 1983 as a breeding area (繁殖区). Officially open to the public in October 1993, Monster Zoo is now home to more than 500 animals.

Opening Hours

Monster zoo is open daily from 9:30 am to 5:00 pm with last entry at 3:00 pm. The zoo is open every day of the year, including Christmas Day and all public holidays. The exception to this is if the forecast temperature for Monster Zoo is 40 degrees or above, it will be closed.

To get the most out of your visit we recommend setting aside a minimum of four to five hours to fully enjoy the Monster zoo.

Tickets

Child (4-14 years old) : AU $28.50

Adult (15 years old and over) : AU $ 51.75

Family / Mini Group: AU $132.75

Meet the Keeper

Monster zoo offers various daily zoo keeper talks and animal feeds that give guests the chance to interact (互动) with our friendly workers and learn about the zoo’s unique residents.

Looking for a more unique animal experience? Consider booking a Behind the Scenes Animal Experience to come face to face with some of our special animal residents.

Café

Ketabi Café is open from 9:30 am to 5:00 pm daily and offers a variety of tasty treats, small snacks and hot meals.

Picnics

For those who prefer to bring their own meals, special picnic areas are available close to the Visitor Center. Please note that due to fire risk, the zoo does not allow for the use of BBQs.

1. What can we learn about the zoo from the text?
A.It is the largest zoo in the world.
B.It is open daily all year except Christmas Day.
C.It is open to the public ten years after it was founded.
D.It is home to 500 species of animals.
2. If three young men aged 12, 14 and 19 visit the zoo, how much will they pay?
A.AU $155.25.B.AU $108.75.
C.AU $85.25.D.AU $132.75.
3. Where does this text most probably come from?
A.A health newspaper.B.An animal book.
C.A travel website.D.A fashion magazine.
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6 . A star athlete at the college where I work recently stopped by my office. After committing a few unforced errors during a weekend match, she was riven by self-criticism. “I’m at peak fitness, and I practice hard. How is this happening?” She asked.

This student believes she should be able to control the outcomes of her life by virtue of her hard work. She has a sense that hours on the field should get her exactly where she needs to go. Many students have similar mentality. When they win, they feel powerful and smart. When they fail, they are crushed by self-blame. If my achievements are mine to control, they reason, my failures must be entirely my fault, too.

We talk often about young adults struggling with failure because their parents have protected them from discomfort. But there is something else at play: a false promise that they can achieve anything if they are willing to work for it.

Psychologists have sourced this phenomenon to a misapplication of “mindset” research, which has found that praising children for effort will increase academic performance. A 2018 analysis found that while praising effort over ability may benefit economically disadvantaged students, it does not necessarily help everyone.

One possible explanation comes from Suniya Luthar, who argued in a research paper that for teens in wealthy, pressure-cooker communities, “it is not a lack of motivation and perseverance (毅力) that is the big problem. Instead, it is unhealthy perfectionism, and difficulty with backing off when they should, when the desire for achievements is over the top.” They push themselves onward in face of impossible goals. A 2007 study found that teens who refused to give up impossible goals showed higher levels of C-reaction protein, a marker of systemic inflammation (全身炎症) linked to heart disease and other medical conditions. A 2014 study showed a connection between the perfectionist tendencies and depression.

The cruel reality is that you can do everything in your power and still fail. Instead of allowing our kids to beat themselves up when things don’t go their way, we adults should help students pursue success in healthier ways in part by redefining failure as a feature, not a bug, of learning. At Smith College where I teach, students are asked to explore how setbacks and missteps made them stronger or more effective. We would be wise to remind our kids that life has a way of sucker-punching (意外打击) us when we least expect it. It’s often the people who learn to say “stuff happens” who get up the fastest.

1. Why was star athlete trapped by self-blame?
A.She broke down during the match.
B.She didn’t try her best in the match.
C.She believed hard work should pay off.
D.She thought she should have practiced harder.
2. What can we learn from Paragraph 5?
A.Lack of motivation and perseverance leads to teens’ failure.
B.Praising children for effort increases academic performance.
C.Children struggle with failure due to parents’ over-protection.
D.Unhealthy perfectionism causes physical and emotional stress.
3. According to the author, adults should _________.
A.help students learn from failure
B.protect students from discomfort
C.reward students for their hard work
D.explore the cause of students’ failure
4. Which of the following does the author probably agree with?
A.Effort equals achievement.
B.Motivation is the key to success.
C.Success is not always under control.
D.Effort is more important than ability.
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7 . Just because a scientist puts a GPS tracking collar on a wild polar bear does not mean the animal will willingly keep it on. They can remove it, if one becomes annoying. But scientists have now found a way of using signals from those dropped collars to track the ice itself.

The scientists identified 20 collars that transmitted movement data consistent with ice drift (漂流) rather than polar bear motion between 2005 and 2015. The resulting records of how melting ice drifts in Hudson Bay are unique; there are no easily accessible on-the-ground sensors, and satellite observations often cannot accurately capture the motion of small ice sheets.

The team compared the removed collars’ movements to widely used ice-drift modeling data from the U. S. National Snow and Ice Data Center (NSIDC). Collar data indicated that the NSIDC model underestimates the speed at which ice moves around in Hudson Bay — as well as the overall extent of drift. Over the course of several months the model could diverge (偏离) from an ice sheet’s location by a few hundred kilometers, the scientists say.

This means the bears may be working harder, when moving against the direction of the ice, than scientists had assumed, “Since we’re underestimating the speed of drift, we’re likely underestimating the energetic effort of polar bears,” says Ron Togunov, who led the study.

The study reveals timely insight into how highly mobile ice moves. As melting increases in coming years, such ice will likely become more common farther north, in the central Arctic, says Andy Mahoney, a geophysicist at the University of Alaska, who was not involved in the study. Scientists had known NSIDC data could underestimate drift speeds, Mahoney says, but “any time we can find a data gap and plug it is a good thing.”

Plus, such data could improve predictions about how oil spills or other pollutants may spread in seas littered with drifting ice, says Walt Meier, a senior NSIDC research scientist. The findings may even influence future NSIDC models. “It'’s a really nice data set.” Meier says. “And certainly one we’ll take under consideration.”

1. What can a GPS tracking collar do?
A.Measure the depth of ice sheet.B.Capture the movement of ice.
C.Describe the melting speed of ice.D.Record the emotional state of bears.
2. What can we learn about the collar data?
A.It shows the ice moves more slowly from its original location.
B.It may reveal polar bears are not so energetic as before.
C.It indicates the ice is more likely to move south in the central Arctic.
D.It can help predict the location of some pollutants in seas.
3. Which would be the best title for this passage?
A.Data Tells a Different StoryB.Wild Polar Bears’ Signaling
C.Insights into a Puzzling AspectD.Ice Is Taken under Consideration
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8 . Thank you. It’s my great honor to be given this award.

You cannot imagine that I have always been a late starter. Years ago, when I was 16, I took an important exam — GCE(General Certificate of Education), which turned out to be a failure. My dad was reading my report card and saw that my position in class was 29th, but the number in class was 29. It meant that I had achieved the distinction of being bottom of my class.

I wasn’t lazy, and I was really trying. You can picture how I felt. Dad put his hand on my shoulder and said, “You can only do the best you can, but whatever you decide to do, make sure you love it.” He was a really sweet guy and a great man. I knew his attempt to hide his disappointment with some of his encouraging words. I was depressed for a week, but his advice was a wake-up call.

Fortunately I love working with my hands, and I was good at two things: woodwork and art, and I really loved to draw and paint. I was quite talented. Dad strongly encouraged me to go to art school, which in those days wasn’t the obvious place that a father would suggest.

So I got into Hartlepool College of Art. The college was a revelation (出乎意料), the passionate teachers there, who were extremely interested in the students, not just tolerating them but actually engaging with them. It was a world apart from my schooling until then. It’s extraordinary what an enthusiastic teacher can do, drawing the student out, lighting independence, and encouraging a design of your own future, rather than waiting for something to happen. I’m honored to have become one of these passionate teachers years later.

My teachers inspired me, and thanks to my dad, here I am tonight. I think I should mention all the talents I have worked with over time, and to my kids and my wife Giannina, thank you.

Thank you for this great award. I shall find a very special place for it.

1. How did the author feel after taking GCE?
A.Happy.B.Upset.C.Tired.D.Relieved.
2. What did Hartlepool College of Art impress the author most?
A.The teachers were strict with students.
B.The students set good examples for each other.
C.The teachers inspired students’ passion for learning.
D.The students got prepared for their lessons independently.
3. The author gave this speech to ________.
A.share his career choice
B.explain his teaching methods
C.describe his life experience
D.show his appreciation
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9 . If you think about it, work-life balance is a strange ambition for a fulfilling life. Balance is about stasis: if our lives were ever in balance-parents happy, kids taken care of, work working-then our overriding thought would be to shout “Nobody move!” and pray all would stay perfect forever. This false hope is made worse by the categories themselves. They imply that work is bad, and life is good. And so the challenge, we are told, is to balance the heaviness of work with the lightness of life.

Yet work is not the opposite of life. It is instead a part of life-just as family is, as are friends and community. All of these aspects of living have their share of uplifting moments and moments that drag us down. The same is true of work. Treat work the same way you do life: by maximizing what you love.

We have interviewed several anesthesiologists (麻醉师) about the thrills they feel in their jobs. One said he loved the thrill of holding each patient hovering at that one precise point between life and death. Another said she loved the bedside conversations before the operation aiming to calm the panic that affects many patients. Another was drawn mostly to the anesthetic mechanism and has devoted himself to defining precisely how each drug does what it does.

Think of your life’s many different activities as threads. Some are black and some are white. But some of these activities appear to be made of a different substance. These activities contain all the tell-tale signs of love: before you do them, you find yourself looking forward to them; while you’re doing them, time speeds up and you find yourself in flow; and after you’ve done them, you feel energetic. These are your red threads, and research by the Mayo Clinic suggests that doctors who weave the fabric of their life with at least 20% red threads are significantly less likely to experience burnout.

The simplest way for you to do this is to spend a week in love with your job. During the week, any time you find yourself feeling one of the signs of love write down exactly what you were doing in the column “Love”. And any time you find yourself feeling the inverse write down what you were doing in the column “Loathe”. By the end of the week you will see a list of activities in your “Love” column, which create in you a positive feeling, one that draws you in and lifts you up.

Our goal should be to, little by little, week by week, intentionally unbalance all aspects of our work toward the former and away from the latter. Not simply to make us feel better, but so that our colleagues, our friends and our family can all benefit from us at our very best.

1. What is the author’s attitude towards work-life balance?
A.Doubtful.B.Disapproving.
C.Supportive.D.Neutral.
2. The author uses three anesthesiologists as examples to ________.
A.prove people benefit from work
B.indicate doctors take pride in their work
C.show people gain joy from different situations
D.imply doctors reduce the pressure of work successfully
3. “Red threads” in Paragraph 4 refer to the activities that ________.
A.arouse your passionB.satisfy your desires
C.improve your motivationD.require your efforts
4. Which of the following does the author probably agree with?
A.Red threads are necessary for a balanced life.
B.Recording activities helps create positive feeling.
C.Find love in work instead of keeping work-life balance.
D.Maximize what you love to remove the heaviness from work.
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10 . William had worked hard to pass the exams to enter high school. When the term began, however, his father told him that there was no money to pay for his school fees because of the summer drought. Still, William wanted to learn.

He made the village library his school. One day, he found a book called Using Energy. On the book’s cover was a picture of windmills, tall steel towers with blades (叶片) spinning like giant fans. He learned that wind—something of which his hometown had plenty—could produce electricity.

He couldn’t help picturing his own windmill in mind, but collecting the parts and tools he needed would take months. In a junkyard, he dug through piles of used metal, old cars, and worn-out tractors, searching for anything that might help him construct his machine. He made four-foot-long blades from plastic pipe, which he melted over a fire, flattened out, and hardened with bamboo poles.

Earning some money, he paid a blacksmith to attach the piston (活塞) to the pedal sprocket (踏板链轮) of an old bicycle frame. This would be the axle (轮轴) of the windmill. When the wind blew, the spinning blades would turn the bicycle wheel and spin a small dynamo (发电机), donated by his friend.

When he had collected all the parts, William began putting them together. He fixed the blades to the tractor fan he found, using washers (垫圈) he’d made from bottle caps. Next he pushed the fan onto the piston joint to the bicycle frame. With the help of his two best friends, William built a 16-foot-tall tower from trunks of trees and lifted the ninety-pound windmill to the top.

The big moments eventually came. He climbed up the tower and connected two wires that held a small bulb. As the wind whipped around him, the blades began to turn, slowly at first, then faster and faster. The light bulb flickered (闪烁), then flashed to life. The crowd cheered from below. “Wachitabwina (well done)!”

William’s machine now powered his house. And the story of the boy who’d built a power-generating windmill to rescue his family from the drought spread across the Internet.

1. After reading Using Energy, what did William decide to do?
A.Make use of wind.B.Enter a high school.
C.Build a village library.D.Learn to survive a drought.
2. According to Para.3, which of the following word can best describe William?
A.Humorous.B.Determined.
C.Cooperative.D.Friendly.
3. What can you learn about William’s machine?
A.It was built by villagers.
B.It worked at the first attempt.
C.It took him years to complete it.
D.It was made from metal materials.
4. What is the best title for the passage?
A.Winds Of HopeB.Ideas Worth Spreading
C.Learning from ExperienceD.Windmills for Villages
2021-05-08更新 | 148次组卷 | 1卷引用:北京市丰台区2021届高三二模英语试题
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