Artificial flesh is growing ever closer to the real thing. Scientists in Australia have now created a new jelly-like material which they claim has the strength and lasting usage of actual skin, ligaments(韧带）,or even bone.
“With the special chemistry we’ve engineered in the hydrogel(水凝胶）,it can repair itself after it has been broken like human skin can,” explains chemist Luke Connal from the Australian National University. “Hydrogels are usually weak, but our material is so strong it could easily lift very heavy objects and can change its shape like human muscles do.”
Having a wet and soft material with such remarkable properties could be very important for the development of next-generation soft robotics and biomedical devices. Creating a shape-changing hydrogel that has multiple functions has proved an ongoing challenge for scientists, even with natural inspiration from sea creatures, such as jellyfish, sea cucumbers, and Venus fly traps.
While some hydrogels can withstand mechanical stress, others have self-healing properties, and a few more have the abilities to memorize shapes or change colours. As far as the ANU researchers know, no one else has been able to incorporate all these functions into one all-encompassing gel. At least, not at the speed and efficiency they’ve achieved.
Using this material, the researchers made extremely thin films of “flesh” without any breakage.
When these films were heated or cooled, they then changed into different shapes, bending one way or the other before returning back to their original state along with the temperature. If temperature is somehow used as a control, the authors think this gel could one day be moved like an artificial muscle. Researchers are trying to modify their temperature control technology accordingly and make a significant step towards turning this hydrogel into practical use.
1.What do you know about the new material according to the text?
A.It looks like the jelly and functions like the robot.
B.It can be easily repaired by scientists after being broken.
C.It is likely to be the most multifunctional hydrogel at present.
D.It can hardly go back to its original shape after heated or cooled.
2.What is the author’s attitude towards the future of the dynamic hydrogel?
A.Indifferent.
B.Neutral.
C.Negative.
D.Positive.
3.What is the best title for the text?
A.Getting scientific inspiration from nature.
B.Lifting heavy objects by dynamic hydrogels.
C.Creating a new kind of flesh with chemistry.
D.Enabling artificial robots to heal themselves.
4.What will the author most probably talk about in the following paragraph?
A.The characters of artificial flesh.
B.The creation of the dynamic hydrogel.
C.The shapes and colors of artificial flesh.
D.The application of the dynamic hydrogel.
高三英语阅读理解中等难度题
Artificial flesh is growing ever closer to the real thing. Scientists in Australia have now created a new jelly-like material which they claim has the strength and lasting usage of actual skin, ligaments(韧带）,or even bone.
“With the special chemistry we’ve engineered in the hydrogel(水凝胶）,it can repair itself after it has been broken like human skin can,” explains chemist Luke Connal from the Australian National University. “Hydrogels are usually weak, but our material is so strong it could easily lift very heavy objects and can change its shape like human muscles do.”
Having a wet and soft material with such remarkable properties could be very important for the development of next-generation soft robotics and biomedical devices. Creating a shape-changing hydrogel that has multiple functions has proved an ongoing challenge for scientists, even with natural inspiration from sea creatures, such as jellyfish, sea cucumbers, and Venus fly traps.
While some hydrogels can withstand mechanical stress, others have self-healing properties, and a few more have the abilities to memorize shapes or change colours. As far as the ANU researchers know, no one else has been able to incorporate all these functions into one all-encompassing gel. At least, not at the speed and efficiency they’ve achieved.
Using this material, the researchers made extremely thin films of “flesh” without any breakage.
When these films were heated or cooled, they then changed into different shapes, bending one way or the other before returning back to their original state along with the temperature. If temperature is somehow used as a control, the authors think this gel could one day be moved like an artificial muscle. Researchers are trying to modify their temperature control technology accordingly and make a significant step towards turning this hydrogel into practical use.
1.What do you know about the new material according to the text?
A.It looks like the jelly and functions like the robot.
B.It can be easily repaired by scientists after being broken.
C.It is likely to be the most multifunctional hydrogel at present.
D.It can hardly go back to its original shape after heated or cooled.
2.What is the author’s attitude towards the future of the dynamic hydrogel?
A.Indifferent.
B.Neutral.
C.Negative.
D.Positive.
3.What is the best title for the text?
A.Getting scientific inspiration from nature.
B.Lifting heavy objects by dynamic hydrogels.
C.Creating a new kind of flesh with chemistry.
D.Enabling artificial robots to heal themselves.
4.What will the author most probably talk about in the following paragraph?
A.The characters of artificial flesh.
B.The creation of the dynamic hydrogel.
C.The shapes and colors of artificial flesh.
D.The application of the dynamic hydrogel.
高三英语阅读理解中等难度题查看答案及解析
The benefits of Keeping a journal
If you want to grow, one important thing you should do is keeping a journal. It may seem simple, but it can make a big difference in your life. I have been keeping journals for years. Writing all the lessons I learn and all the ideas I get has become a habit for me. 1. Here are some benefits you will get by keeping a journal.
◆ It prevents you from losing an idea. Have you ever gotten an idea only to lose it later because you didn’t write it down? 2. But then I developed the habit of writing down every idea that came into my mind as soon as possible. If I’m away from my computer, I usually write it down on a piece of paper that I bring wherever I go. I will then transfer the idea to the journal in my computer.
◆ It helps you review all the lessons you’ve learned. By reviewing your journal, you can quickly see the lessons you’ve learned and the ideas you’ve gotten. 3. You can use the ideas to propel (鞭策) yourself forward.
◆4. After keeping a journal for years, you can look back at it and see how far you’ve gone. Things that were big problems in the past might seem small today. The raw ideas you had in the past might have been realized today.
◆ It helps you expand your ideas. When you try to come up with a sentence to express an idea, you are thinking actively about it. 5. In the end, you will expand your ideas.
A．I often experienced that myself.
B．It trains you to express your thoughts.
C．It allows you to see your progress over time.
D．Just use whatever tool you feel comfortable with.
E. Thinking actively helps you connect your idea to another idea.
F. And to be honest, I can’t imagine what my life would be like without it.
G. Then you can do whatever necessary to avoid repeating the same mistakes.
高三英语七选五中等难度题查看答案及解析
The Benefits of Keeping a Journal
If you want to grow, one important thing you should do is keeping a journal. It may seem simple, but it can make a big difference in your life. 1. And to be honest, I can’t imagine what my life would be like without it. Here are some benefits you will get by keeping a journal.
It prevents you from losing an idea. Have you ever gotten an idea only to lose it later because you didn’t write it down? 2. But then I developed the habit of writing down every idea that came into my mind as soon as possible.
3. By reviewing your journal, you can quickly see the lessons you’ve learned and the ideas you’ve gotten. Then you can do whatever necessary to avoid repeating the same mistakes. You can use the ideas to push yourself forward.
It allows you to see the progress over time. After keeping a journal for years, you can look back at it and see how far you’ve gone. Things that were big problems in the past might seem small today. 4.
It helps you expand your ideas. When you try to come up with a sentence to express an idea, you are thinking actively about it. 5. In the end, you expand your ideas.
A.It aims to express your ideas.
B.I often experienced that myself.
C.And the raw ideas in the past might have been realized today.
D.It helps you review all the lessons you’ve learned.
E.Just use whatever tool you feel comfortable with.
F.Active thinking helps you connect your idea to another one.
G.Keeping a journal has become a habit for me.
高三英语七选五中等难度题查看答案及解析
The Benefits of Keeping a Journal
If you want to grow, one important thing you should do is keeping a journal. It may seem simple, but it can make a big difference in your life. I have been keeping journals for years. Writing all the lessons I learn and all the ideas I get has become a habit for me. 1.
Here are some benefits you will get by keeping a journal.
It prevents you from losing an idea. Have you ever gotten an idea only to lose it later because you didn't write it down？2. But then I developed the habit of writing down every idea that came into my mind as soon as possible. If I'm away from my computer, I usually write it down on a piece of paper that I bring wherever I go. I will then transfer the idea to the journal in my computer.
It helps you review all the lessons you've learned. By reviewing your journal, you can quickly see the lessons you've learned and the ideas you've gotten. 3. You can use the ideas to push yourself forward.
4. After keeping a journal for years, you can look back at it and see how far you've gone. Things that were big problems in the past might seem small today. The raw ideas you had in the past might have been realized today.
It helps you expand your ideas. When you try to come up with a sentence to express an idea, you are thinking actively about it. 5. In the end, you will expand your ideas.
A. I often experienced that myself.
B. It allows you to see your progress over time.
C. It trains you to express your thoughts.
D. Just use whatever tool you feel comfortable with.
E. Thinking actively helps you connect your idea to another idea.
F. And to be honest, I can't imagine what my life would be like without it.
G. Then you can do whatever necessary to avoid repeating the same mistakes.
高三英语七选五中等难度题查看答案及解析
The benefits of keeping a journal (日志)
If you want to grow, one important thing you should do is keeping a journal. It may seem simple, but it can make a big difference in your life. I have been keeping journals for years. Writing all the lessons I learn and all the ideas I get has become a habit for me. ________1.________ Here are some benefits you will get by keeping a journal.
◆ It prevents you from losing an idea. Have you ever gotten an idea only to lose it later because you didn’t write it down? ________2.________ But then I developed the habit of writing down every idea that came into my mind as soon as possible. If I’m away from my computer, I usually write it down on a piece of paper that I bring wherever I go. I will then transfer the idea to the journal in my computer.
◆ It helps you review all the lessons you’ve learned. By reviewing your journal, you can quickly see the lessons you’ve learned and the ideas you’ve gotten. ________3.________ You can use the ideas to propel (鞭策) yourself forward.
◆________4.________ After keeping a journal for years, you can look back at it and see how far you’ve gone. Things that were big problems in the past might seem small today. The raw ideas you had in the past might have been realized today.
◆ It helps you expand your ideas. When you try to come up with a sentence to express an idea, you are thinking actively about it. ________5.________ In the end, you will expand your ideas.
A．I often experienced that myself.
B．It trains you to express your thoughts.
C．It allows you to see your progress over time.
D．Just use whatever tool you feel comfortable with.
E. Thinking actively helps you connect your idea to another idea.
F. And to be honest, I can’t imagine what my life would be like without it.
G. Then you can do whatever necessary to avoid repeating the same mistakes.
高三英语信息匹配中等难度题查看答案及解析
Every day, we are inching closer to some kind of artificial intelligence. Advances in big data, machine learning and robotics are going to give us a world where computers are effectively intelligent in terms of how we deal with them. Should you be scared by this? Absolutely, but not in the usual “robot overlords” (机器人帝国) kind of way. Instead, the real fear should be about getting human beings wrong, not getting AI right.
The key to the technology is the ability of computers to recognize human emotions based on the ‘‘activation” of muscles in the face. A computer can identify the positions of facial muscles and use them to infer the emotional state of its user. Then the machine responds in ways that take that emotional state into account.
One potential application of it is to provide “emotional robots” for the elderly. Having a machine that could speak in a kind way would comfort a lonely older person. That is a good thing, right? But that won’t also relieve us from questioning how we ended up in a society that takes care of the elderly because we don’t know what else to do with them? Can’t we have more humane solutions than robots?
“Emotion data” aren’t the same thing as the real and vivid emotional experiences we human beings have. Our emotions are more than our faces or voices. How can they be pulled out like a thread, one by one, from the fabric of our being?
Research programs can come with much philosophical concern, too. From the computers’ point of view, what the computing technology captures are emotions, but at its root is a reduction of human experience whose outward expressions can be captured algorithmically (计算上). As the technology is used in the world, it can reframe the world in ways that can be hard to escape from.
The technology will clearly have useful applications, but once it treats emotions as data, we may find that it is the only aspect of emotion we come to recognize or value. Once billions of dollars floods into this field, we will find ourselves trapped in a technology that is reducing our lives. Even worse, our “emotion data” will be used against us to make money for someone else. And that is what scares me about AI.
1.Why does the author feel scared of the development of artificial intelligence?
A. The technology is developing much too slowly.
B. Computers can’t recognize human emotions.
C. Robots would get control of human beings.
D. People may use artificial intelligence improperly.
2.Why does the author dislike the idea of providing “emotional robots” for the elderly?
A. The aged people will find it hard to live with them.
B. What elderly people need is much more than that.
C. It can’t relieve us of the pressure from modern society.
D. It’s impossible to use them to keep the elderly healthy.
3.What does the author intend to conclude in Paragraphs 4 and 5?
A. Emotional data can’t be equal to human emotions.
B. AI technology itself has fewer and fewer faults.
C. AI-built-in robots won’t have the ability to understand human beings.
D. The information computers get can reframe human emotions.
4.How does the author think about ‘‘emotion data” according to the last paragraph?
A. It can arouse people’s sense of value.
B. It can improve people’s human experience.
C. It may be misused as a tool to make profits.
D. It may push the AI technology forward.
高三英语阅读理解中等难度题查看答案及解析
eXp Realty is one of the world's fastest-growing and most successful real estate （房地产） companies. It has become famous not for investing in actual real estate, but for focusing on
virtual reality offices that allow its agents and brokers （中间商）to interact and socialize from anywhere around the globe.
Glenn Sanford, eXp Realty's founder and CEO, founded the company a decade ago, soon after the real estate market collapse of 2007. He couldn't afford to buy or rent office space. What's more important, he figured that focusing on a system that allowed his team to work remotely would help the company avoid possible real estate crises in the future. So eXp Realty relied on services like Google Docs, project management solutions like Trello, and communications app Slack to help its workforce work together in virtual reality. "The virtual campus is a big part of our growth engine. If we were limited to actual offices, the growth we've had simply wouldn't be possible," Scott Petronis, chief technology officer of eXp Realty said.
Having a virtual campus in the virtual world rather than in the real one apparently has several major advantages. For the most important one, eXp Realty can hire whatever talent they like, no matter where they are. As long as they have Internet connection, they can interact with their colleagues and the company management like avatars （虚拟人）because they can walk around the campus, enter various virtual facilities, and interact with each other. While the main focus is on work and brainstorming, eXp Realty is constantly adding fun stuff as well, like riding on a virtual lake and enjoying a drink at the bar.
At the beginning of 2018, eXp Realty had around 6,500 brokers, but till today that number has increased to over 12,000. They are operating in 300 markets across the US and Canada. If that isn't enough to convince you, the company was recently listed on the Nasdaq Stock Market, with first-day market capitalization of over $1 billion. But it doesn't own or lease any more physical space than what is required by law.
1.What do we know about eXp Realty?
A.It relies much on technology.
B.It was founded by accident.
C.It's famous for its large offices.
D.It's a branch company of Google.
2.What mainly inspired Glenn Sanford to adopt virtual offices?
A.He could work closely with famous online services.
B.He is quite professional in the field of information technology.
C.Virtual offices can enable him to avoid potential real estate crises.
D.The starting base for the virtual real estate market was low at that time.
3.What's the biggest advantage of having a virtual campus?
A.Agents and brokers can communicate timely.
B.It helps attract talents regardless of their location.
C.Companies can cooperate with high-tech avatars.
D.Employees can have a relaxing work environment.
4.We can infer from the last paragraph that eXp .
A.is really a success
B.has some illegal businesses
C.is expanding its business worldwide
D.has poor performance in the stock market
5.What might be the best title of the passage?
A.Why Does Real Estate Industry Grow So Quickly?
B.Billion Dollar Real Estate Company一eXp Realty
C.Virtual Reality Office Vs. Physical Office Space
D.What Can Virtual Reality Do to Our Business?
高三英语阅读理解困难题查看答案及解析
Blue whales are the largest animals ever known to have existed on the planet, and they can grow to a length of 100 feet and weigh more than 330,000 pounds. But recently researchers have found that these whales are on the move and they have migrated from California waters to areas off Canada and Alaska for the first time since commercial whaling ended in 1965.
The researchers identified 15 blue whales that have appeared off the coast of British Columbia and the Gulf of Alaska since 1997. Four of these whales were recognized as ones that were once sighted off California shores, suggesting that the whales are returning to an old migration pattern between the coasts.
Before commercial whaling began in the early 1900s, blue whales were found widely throughout the North Pacific and California waters. But from the 1920s to the 1960s,whaling severely reduced the whale populations. Blue whales never recovered in the Northern Pacific, making sightings in this area rare. However, much larger groups of whales have been observed close to California since the 1970s.
The scientists had previously thought that the California population was separate from the population that had historically lived in North Pacific waters. But the current study shows that whales off the coast of British Columbia and the Gulf of Alaska are likely part of the California population.
To identify the blue whales, the researchers looked at photos of cetaceans taken in the North Pacific Ocean and compared them with a library of blue whale pictures taken along the West Cost of the United States and Southern Pacific. Up to now, the researchers are not quite sure why the whales are changing their migration patterns, but they suspect that the whales may be following their food moving farther north by the changes in ocean conditions.
1.According to the passage, blue whales are .
A. following a fixed route of migration
B. dying out due to commercial whaling
C. moving from the south to the north
D. rarely found in the Southern Pacific
2.The whale population in the northern Pacific .
A. is different from the California population
B. is probably part of the California population
C. has become the largest group since the 1970s
D. has lived there since the 1960s
3.The underlined word "cetaceans" in Paragraph 5 probably means .
A. land creatures B. whale species
C. ocean conditions D. migration patterns
4.What might make blue whales migrate according to the researchers?
A. Commercial whaling. B. Weather conditions.
C. Life reproduction. D. Food resources.
高三英语阅读理解中等难度题查看答案及解析
Blue whales are the largest animals ever known to have existed on the planet, and they can grow to a length of 100 feet and weigh more than 330,000 pounds. But recently researchers have found that these whales are on the move and they have migrated (moved) from California waters to areas off Canada and Alaska for the first time since commercial whaling ended in 1965.
The researchers identified 15 blue whales that have appeared off the coast of British Columbia and the Gulf of Alaska since 1997. Four of these whales were recognized as ones that were once sighted off California shores, suggesting that the whales are returning to an old migration pattern between the coasts.
Before commercial whaling began in the early 1900s, blue whales were found widely throughout the North Pacific and California waters. But from the 1920s to the 1960s, whaling severely reduced the whale populations. Blue whales never recovered in the Northern Pacific, making sightings in this area rare. However, much larger groups of whales have been observed close to California since the 1970s.
The scientists had previously thought that the California population was separate from the population that had historically lived in North Pacific waters. But the current study shows that whales off the coast of British Columbia and the Gulf of Alaska are likely part of the California population.
To identify the blue whales, the researchers looked at photos of cetaceans taken in the North Pacific Ocean and compared them with a library of blue whale pictures taken along the West Coast of the United States and Southern Pacific. Up to now, the researchers are not quite sure why the whales are changing their migration patterns, but they suspect that the whales may be following their food moving farther north by the changes in ocean conditions.
1.According to the passage, blue whales are __________.
A. following the fixed route of migration
B. dying out due to commercial whaling
C. rarely found in the Southern Pacific
D. moving from the south to the north
2.The whale population in the northern Pacific __________.
A. is different from the California population
B. has become the largest group since the 1970s
C. is probably part of the California population
D. has lived there since the 1960s.
3.The underlined word “cetaceans” in Paragraph 5 probably means __________.
A. whales species B. land creatures
C. ocean conditions D. migration patterns
4.What might make blue whales migrate according to the researchers?
A. Commercial whaling. B. Food resources.
C. Weather conditions. D. Life reproduction.
高三英语阅读理解中等难度题查看答案及解析
I was assigned to take care of this patient a couple of weeks ago and began to grow closer to her. Communicating with her was 1 because everything she wanted to say to me had to be written on a notepad. As a nursing graduate, I was able to 2 her mind by observing even a slight 3 in a patient's facial expression.
One day, when I was checking the patient，she 4 me on the shoulder to show me a note，"Do you think I could be let go 5 the hospital in a month to see my niece get married?，，Taking her hand in mine, I told her that I could not 6 her，because I did not want to leave her a 7 sense of hope. 8，I made her believe that I would be there with her every step of the way on her journey toward 9 . Hearing that, the patient gave me a 10 and a hug.
Day by day, I built her 11 by walking around the floor with her. As I did this, I could see before my own eyes that her health was 12 improving and able to walk more steadily. On her last day in hospital, just before her niece’s 13 ，she wrote me one last note, “I couldn’t have done this 14 you; I love you.” After kissing goodbye, I had a strong sense of achievement. I realized that moments like this were 15 I woke up early for 16 in the hospital and spent long hours with her. I truly felt, and her 17 confirmed, that I was an 18 part of this woman’s recovery. My experience with this patient shows me that this career allows me to touch the 19 of people in ways that people in other 20 will never get to experience.
1. A．difficult B．funny C．simple D．interesting
2. A．see B．know C．read D．feel
3. A．worry B．change C．pain D．excitement
4. A．tapped B．hit C．knocked D．struck
5. A．of B．to C．in D．from
6. A．disappoint B．promise C．comfort D．trust
7. A．false B．strong C．right D．good
8.A. Therefore B. Besides C However D. Furthermore
9. A．death B．success C．destination D．recovery
10. A．surprise B．stare C．smile D．whistle
11. A．future B．strength C．hope D．confidence
12. A．slowly B．completely C．rapidly D．finally
13. A．presence B．visit C．wedding D．presentation
14. A．without B．behind C．except D．beside
15. A．what B．why C．when D．how
16. A．work B．school C．office D．exercise
17. A．expression B．note C．feeling D．treatment
18. A．irrelevant B．insignificant C．instructive D．important
19. A．fortunes B．shoulders C．lives D．tears
20. A．hospitals B．areas C．lands D．fields
高三英语完型填空困难题查看答案及解析