C
The world’s first plastic magnet (磁性) to work at room temperature has passed the elementary test of magnetism. Its creators at the University of Durham in the UK have used it to pick iron filings (铁屑) from a laboratory bench.
In 2001, chemists from the University of Nebraska-Lincoln claimed to have created the world’s first plastic magnet, but it only worked below 10 Kelvin (开氏温度). Other researchers have made plastic magnets, but generally they only function at extremely low temperatures, or their magnetism at room temperature is too weak to be business use.
So the Durham team can claim to have made the first plastic magnet that could be used in everyday products. One of the most likely applications is in the magnetic coating of computer hard discs, which could lead to a new generation of high-capacity discs.
Jerry Torrance, a material scientist who is an adviser to some of the world’s largest electronics and engineering companies, including IBM, describes the work as “a great scientific breakthrough”. However, he says that practical applications are probably still a long way off.
At first the new polymer (聚合物) showed little sign of magnetism, and after three months the researchers had reached the point where they felt that trying to induce (诱发) magnetism in this polymer was a waste of time. “Just as we were about to give up and try a different way, we decided to check the samples for a last time,” says Sean Giblin.
It was a fortunate decision, because over the months the original polymer had developed magnetic characteristics. Further groups of polymer proved its magnetism and ruled out the possibility that the magnetism had been caused by pollution. In addition, X-ray diffraction data (衍射数据) showed an increase in the straight line of the polymer chains over three months, which probably accounts for the increase in magnetism.
Although the polymer’s magnetism is weak compared with metal magnets, the researchers are confident that they can improve it. And in addition to computer hard discs, the team thinks that plastic magnets could have important medical applications because organic magnetic materials are less likely to be rejected by the body.
64. The plastic magnets made by the chemists from University of Nebraska-Lincoln and other researchers couldn’t be used in everyday products because ________ .
A. they didn’t pass the elementary test of magnetism
B. they couldn’t pick up iron filings from a laboratory bench
C. they wouldn’t work at room temperature
D. they could only be used at high temperature
65. The increase in magnetism over the months is probably caused by ________ .
A. checking the samples B. a wise decision
C. pollution
D. the increase in the straight line of the polymer chains
66. The plastic magnets could be used ________ .
A. to compare with the metal magnets
B. to coat computer hard discs
C. to produce medicine
D. to lower the temperature
67. What would be the best title for the passage?
A. The Birth of Practical Plastic Magnet
B. The World’s First Plastic Magnet
C. A Fortunate Decision
D. The Applications of Plastic Magnets
高三英语阅读理解简单题
C
The world’s first plastic magnet (磁性) to work at room temperature has passed the elementary test of magnetism. Its creators at the University of Durham in the UK have used it to pick iron filings (铁屑) from a laboratory bench.
In 2001, chemists from the University of Nebraska-Lincoln claimed to have created the world’s first plastic magnet, but it only worked below 10 Kelvin (开氏温度). Other researchers have made plastic magnets, but generally they only function at extremely low temperatures, or their magnetism at room temperature is too weak to be business use.
So the Durham team can claim to have made the first plastic magnet that could be used in everyday products. One of the most likely applications is in the magnetic coating of computer hard discs, which could lead to a new generation of high-capacity discs.
Jerry Torrance, a material scientist who is an adviser to some of the world’s largest electronics and engineering companies, including IBM, describes the work as “a great scientific breakthrough”. However, he says that practical applications are probably still a long way off.
At first the new polymer (聚合物) showed little sign of magnetism, and after three months the researchers had reached the point where they felt that trying to induce (诱发) magnetism in this polymer was a waste of time. “Just as we were about to give up and try a different way, we decided to check the samples for a last time,” says Sean Giblin.
It was a fortunate decision, because over the months the original polymer had developed magnetic characteristics. Further groups of polymer proved its magnetism and ruled out the possibility that the magnetism had been caused by pollution. In addition, X-ray diffraction data (衍射数据) showed an increase in the straight line of the polymer chains over three months, which probably accounts for the increase in magnetism.
Although the polymer’s magnetism is weak compared with metal magnets, the researchers are confident that they can improve it. And in addition to computer hard discs, the team thinks that plastic magnets could have important medical applications because organic magnetic materials are less likely to be rejected by the body.
64. The plastic magnets made by the chemists from University of Nebraska-Lincoln and other researchers couldn’t be used in everyday products because ________ .
A. they didn’t pass the elementary test of magnetism
B. they couldn’t pick up iron filings from a laboratory bench
C. they wouldn’t work at room temperature
D. they could only be used at high temperature
65. The increase in magnetism over the months is probably caused by ________ .
A. checking the samples B. a wise decision
C. pollution
D. the increase in the straight line of the polymer chains
66. The plastic magnets could be used ________ .
A. to compare with the metal magnets
B. to coat computer hard discs
C. to produce medicine
D. to lower the temperature
67. What would be the best title for the passage?
A. The Birth of Practical Plastic Magnet
B. The World’s First Plastic Magnet
C. A Fortunate Decision
D. The Applications of Plastic Magnets
高三英语阅读理解简单题查看答案及解析
In an effort to discourage people from using plastics,scientists have been hard at work inventing alternative packaging products.From water bottles made from seaweed to cutlery(餐具) made from rice and wheat,a number of inventions are set to change the way we eat while we are on the go,or having a relaxing picnic in the park.
The idea of using seaweed to make eco-friendly(环保的) water bottles has been around for a few years.Recently,Ari Jonsson took his invention—a water bottle made from red seaweed—to show off at a festival. The bottles will only hold their shape as long as they are filled.As soon as these bottles are empty they will begin to break down,though they would be perfectly safe to eat.Ari Jonsson’s bottles are a step closer to a widely used alternative to the current plastic ones.
The eatable water container is not the only product to add to our image of the future.Narayana Pessapaty has also created eatable spoons.After the success of his spoons, Mr Pessapaty is ready to expand and introduce forks and chopsticks to his menu.His aim is to largely reduce the amount of plastic waste,which is a huge problem for waste sites all over the world.It is a product that may take up to 500 years to break down,and recycling companies worldwide are struggling to deal with it.
Aside from the obvious benefits to the environment,this new packaging is also cheap to produce and therefore cheap to buy.Even better is the fact that similar eatable cutlery can be made at home,possibly a science project for children or just fun with friends.Why not get experimenting and create your own recipes?
1.Why do scientists invent alternative packaging products?
A. To make people’s life more convenient.
B. To reduce the amount of plastic waste.
C. To charge the way we picnic outside.
D. To show off their inventive talents.
2.What makes Ari Jonsson’s water bottles eco-friendly?
A. They can be made at home.
B. They are cheap to produce and buy.
C. They will hold their shape when they are filled.
D. They will break down themselves when empty.
3.What do Ari and Narayana’s inventions have in common?
A. They are convenient to carry. B. They are safe to eat.
C. They can be used for a short time. D. They are heavier than plastics.
4.What can be inferred from this passage?
A. Home-made eatable cutlery is likely to be popular.
B. Eatable cutlery’will completely replace plastics in the near future.
C. No recycling companies can breakdown plastic waste.
D. It’s unsafe for individuals to invent eatable cutlery at home.
高三英语阅读理解困难题查看答案及解析
When Denis wants to relax at work, he steps into a quiet room, sits in a chair, slips on a virtual-reality headset, and escapes to the beach. For Denis, those minutes are a tool he relies on regularly to both relieve and prevent stress.
He's not the only one at his company to use the room, where workers can also use a headset to watch a moon walk, take a virtual roller-coaster ride or access a meditation (冥想) app.
Research shows VR can help reduce pain and anxiety. But it's not yet clear why it works. Experts believe it's related to the technology's power to distract.
''Whatever their problems are, whatever their stresses are, they can literally neglect them and have a different emotional pulse, '' Denis said.
Virtual-reality headsets haven't taken off with consumers, but they're now powerful and inexpensive enough for companies to consider investing in them to help make workers and customers happier.
The headsets may help people take a virtual break from their surroundings, but there are challenges to consider. Ramon Llamas, a tech market researcher, noted that there could be challenges in handing out headsets. Some people get sick or dizzy while using virtual reality, and the headsets may get dirty or broken. There's also the task of quickly familiarizing people with using the headsets, especially since VR adoption has been so limited and the ways they are controlled can vary.
For now, Llamas said, he's concerned about privacy and security. What if, for instance, someone manages to back into a headset and insert some content into what you're watching?
Another potential issue is the managing of the headsets and software that goes along with them. This is likely not a complication for an office like Umber Realty's, where people can simply take a headset off if they feel something wrong. But it could be more of a problem if you're stuck in a dentist's chair. ''The last thing you want is that in the middle of extracting a tooth something goes wrong.'' Llamas said.
1.What does Denis's company use Virtual Reality for?
A.Improving the customers' experience.
B.Displaying the schedule of his company.
C.Relieving the staff's work pressure.
D.Saving the trouble of transportation.
2.How can the VR devices help the users by Denis?
A.Ignoring reality for the moment. B.Improving their thinking.
C.Designing work for the company. D.Investing in a new industry.
3.What does the author focus on in the last three paragraphs?
A.The potential problems with VR.
B.The privacy policy available for VR.
C.The management of these devices in the market.
D.The standards the VR technology is to follow.
4.What is the best title of the passage?
A.VR, a promising business in future! B.Is VR always making us relax?
C.The adoption of VR needs investments. D.Are we saying ''goodbye'' to VR?
高三英语阅读理解困难题查看答案及解析
At the end of the First World War, in 1918. China was convinced it would be able to reclaim the territories occupied by the Germans in present-day Shandong Province. After all, it had fought along with the Allies. However it was not to be. The warlord government of the day had ________ struck a deal with the Japanese, offering the German colonies in return for financial support. The Allies, ________, acknowledged Japan’s territorial claims in China. When it became known in China in April 1919 that the negotiations over the Treaty of Versailles(凡尔赛条约)would not ________ China’s claims, it gave rise to a movement that might be considered even more revolutionary than the one that ended the Empire.
In the course of this May Fourth Movement, some 5,000 students from Peking University hit the streets to ________ the Versailles Treaty. But more was at stake than Japan’s grabbing of land. When one considers the 1911 Revolution as a mere regime(政体)change, it become clear that the numerous popular demands for modernization had not been satisfied yet.
The May Fourth Movement was part cultural revolution, part _______ movement. On the cultural side , the students had been inspired in the preceding two decades by Western thought, creating a feeling of frustration and _______ with Chinese tradition. In the intellectual ferment(酝酿/骚动)that resulted from this, answers were sought for the questions why and how China had lagged behind the West. The negative influences of traditional morality, the clan(宗族)system and Confucianism were seen as the main causes. China in its shaky state could only be cured by “Two Doctors”: Doctor Science(赛先生)and Doctor Democracy(德先生).
At the same time, intellectuals untied in the New Culture Movement attempted to make Chinese culture more ________ to social groups beyond the traditional scholar-officials. To this end, they advocated a Literary Revolution, in which wenyan, the ossified(僵化的)system of ________ language, was to be replaced by a system based on conversational language, the so-called baihua. Hu Shi is one of the scholars who ________ with this movement, and meanwhile Lu Xun is seen as one of the most productive practitioners of this type of writing that came into _______ in the 1920s.
The social aspects of May Fourth consisted of attempts to free the Chinese woman, although this was often limited to movements to bring foot-binding to a halt. Nonetheless, in the cities newly ________ women, modern girls who had been educated, became a loud voice for further changes.
May Fourth is seen as a critical _______ for the founding of the Chinese Communist Party. Before 1919, there was hardly any interest in what was happening in Russia. After May Fourth, Marxism was seen as a _______ revolutionary ideology for a predominantly agricultural society such as China still was.
Even today, May Fourth functions as a point of _______ for China. The Party may interpret the events of 1919 as being brought about by its earliest members, and it may turn Lu Xun into the Marxist writer he would refuse to be, but the fact ________ that May Fourth truly set China on its revolutionary path.
1.A.firmly B.suddenly C.immediately D.secretly
2.A.on the other hand B.for instance C.on the contrary D.with no exception
3.A.challenge B.honor C.withdraw D.investigate
4.A.agree on B.draw up C.demonstrate against D.adhere to
5.A.political B.democratic C.social D.revolutionary
6.A.contentment B.dissatisfaction C.interconnection D.identification
7.A.accessible B.modernized C.complex D.appealing
8.A.written B.non-verbal C.informal D.dead
9.A.debated B.parted C.disagreed D.identified
10.A.effect B.being C.power D.fortune
11.A.engaged B.divorced C.liberated D.widowed
12.A.burden B.accelerator C.message D.handbrake
13.A.superficial B.unrealistic C.applicable D.imperfect
14.A.departure B.difference C.interest D.reference
15.A.alters B.denies C.overstates D.remains
高三英语完形填空困难题查看答案及解析
Kae, _________sister I shared a room with when we were at college, has gone to work in Australia.
A. whom B. that
C. whose D. her
高三英语单项填空中等难度题查看答案及解析
At first, the company _______ many fine promises to Jack in order to get him to work for them.
A.held up B.held back C.held off D.held out
高三英语单项填空中等难度题查看答案及解析
The work was not easy to finish, but he managed to complete it at ________.
A. first B. least
C. most D. length
高三英语单项填空简单题查看答案及解析
April 27 is Take Our Daughters to Work Day in Britain. Started at first in the United States and brought to Britain in 1994, Take Our Daughters to Work Day has become a special day for girls between 11 and 15. On that day thousands of girls take a day off school and go together with one of their parents to their work places. The purpose of this day is to broaden girls’ horizons and raise their self-confidence.
For many years people have thought that boys can do better than girls in society. But actually, “girls can be whatever they want to be just like boys, whether it is a pilot, a nurse or a chief executive,” says the chairman of Our Sons and Daughters Charitable Trust, an organization which supported the activity of the Day. “Now the girls have a close look at what their parents are doing and this may help them to be more self-confident when they are faced with a choice of work.”
Schools and many companies support the activity too. Palmers Green High School for Girls, in north London, has made the Day a necessary part of career education.
Zarina Bart, 15, from Palmers Green, went with her mother to her lawyer’s office on this year’s Take Our Daughters to Work Day. She found it interesting to see her mother at work. “It’s really strange seeing Mum at work — running around, getting serious and telling people what to do.” She has always liked this idea of going into law and thinks it likely that she will follow in her mother’s footsteps. Having a chance to see how her mother works has given her more self-confidence.
Experts believe that girls with higher self-confidence aim higher and are more likely to be successful in life. Parents have the most important effect on the confidence of teenage girls. If parents believe in their daughters and show examples both at work as well as at home for them, this will give a lot of help to girls. Take Our Daughters to Work Day is surely a step in the right direction.
1.What is the topic of this passage?
A. Raising daughters’ self-confidence.
B. Take Our Daughters to Work Day.
C. Equally between boys and girls.
D. Following mothers’ footsteps.
2.It can be inferred from Paragraph 2 that ________.
A. women pilots are popular in Britain
B. girls are sure about their future jobs
C. people have wrongly believed that girls can do as well as boys
D. for many years boys have had a relatively wider choice of work
3.According to the passage, which of the following is TRUE?
A. Take Our Daughters to Work Day is British in origin.
B. Palmers Green favors Take Our Daughters to Work Day.
C. On the Day children are taken to their parent’s work places.
D. Parents in Britain show good examples both at work and at home.
4.After her experience on Take Our Daughters to Work Day, Zarina felt ________.
A. confident about finding a job in the future
B. strange to watch her mother working in the office
C. sure about what to choose as her future career
D. interested in doing the same job as her mother
5.The author’s attitude towards the Day is ________.
A. favorable B. unclear C. critical D. neutral
高三英语阅读理解中等难度题查看答案及解析
April 27 is Take Our Daughters to Work Day in Britain. Started at first in the United States and brought to Britain in 1994, Take Our Daughters to Work Day has become a special day for girls between 11 and 15. On that day thousands of girls take a day off school and go together with one of their parents to their work places. The purpose of this day is to broaden girls’ horizons and raise their self-confidence.
For many years people have thought that boys can do better than girls in society. But actually, “girls can be whatever they want to be just like boys, whether it is a pilot, a nurse or a chief executive,” says the chairman of Our Sons and Daughters Charitable Trust, an organization which supported the activity of the Day. “Now the girls have a close look at what their parents are doing and this may help them to be more self-confident when they are faced with a choice of work.”
Schools and many companies support the activity too. Palmers Green High School for Girls, in north London, has made the Day a necessary part of career education.
Zarina Bart, 15, from Palmers Green, went with her mother to her lawyer’s office on this year’s Take Our Daughters to Work Day. She found it interesting to see her mother at work. “It’s really strange seeing Mum at work — running around, getting serious and telling people what to do.” She has always liked this idea of going into law and thinks it likely that she will follow in her mother’s footsteps. Having a chance to see how her mother works has given her more self-confidence.
Experts believe that girls with higher self-confidence aim higher and are more likely to be successful in life. Parents have the most important effect on the confidence of teenage girls. If parents believe in their daughters and show examples both at work as well as at home for them, this will give a lot of help to girls. Take Our Daughters to Work Day is surely a step in the right direction.
1.What is the topic of this passage?
A. Raising daughters’ self-confidence.
B. Take Our Daughters to Work Day.
C. Equally between boys and girls.
D. Following mothers’ footsteps.
2.It can be inferred from Paragraph 2 that ________.
A. women pilots are popular in Britain
B. girls are sure about their future jobs
C. people have wrongly believed that girls can do as well as boys
D. for many years boys have had a relatively wider choice of work
3.According to the passage, which of the following is TRUE?
A. Take Our Daughters to Work Day is British in origin.
B. Palmers Green favors Take Our Daughters to Work Day.
C. On the Day children are taken to their parent’s work places.
D. Parents in Britain show good examples both at work and at home.
4.After her experience on Take Our Daughters to Work Day, Zarina felt ________.
A. confident about finding a job in the future
B. strange to watch her mother working in the office
C. sure about what to choose as her future career
D. interested in doing the same job as her mother
5.The author’s attitude towards the Day is ________.
A. favorable B. unclear
C. critical D. neutral
高三英语阅读理解中等难度题查看答案及解析
April 27 is Take Our Daughters to Work Day in Britain. Started at first in the United States and brought to Britain in 1994, Take Our Daughters to Work Day has become a special day for girls between 11 and 15. On that day thousands of girls take a day off school and go together with one of their parents to their work places. The purpose of this day is to broaden girls’ horizons and raise their self-confidence.
For many years people have thought that boys can do better than girls in society. But actually, “girls can be whatever they want to be just like boys, whether it is a pilot, a nurse or a chief executive,” says the chairman of Our Sons and Daughters Charitable Trust, an organization which supported the activity of the Day. “Now the girls have a close look at what their parents are doing and this may help them to be more self-confident when they are faced with a choice of work.”
Schools and many companies support the activity too. Palmers Green High School for Girls, in north London, has made the Day a necessary part of career education.
Zarina Bart, 15, from Palmers Green, went with her mother to her lawyer’s office on this year’s Take Our Daughters to Work Day. She found it interesting to see her mother at work. “It’s really strange seeing Mum at work — running around, getting serious and telling people what to do.” She has always liked this idea of going into law and thinks it likely that she will follow in her mother’s footsteps. Having a chance to see how her mother works has given her more self-confidence.
Experts believe that girls with higher self-confidence aim higher and are more likely to be successful in life. Parents have the most important effect on the confidence of teenage girls. If parents believe in their daughters and show examples both at work as well as at home for them, this will give a lot of help to girls. Take Our Daughters to Work Day is surely a step in the right direction.
1.What is the topic of this passage?
A. Raising daughters’ self-confidence.
B. Take Our Daughters to Work Day.
C. Equally between boys and girls.
D. Following mothers’ footsteps.
2.It can be inferred from Paragraph 2 that ________.
A. women pilots are popular in Britain
B. girls are sure about their future jobs
C. people have wrongly believed that girls can do as well as boys
D. for many years boys have had a relatively wider choice of work
3.According to the passage, which of the following is TRUE?
A. Take Our Daughters to Work Day is British in origin.
B. Palmers Green favors Take Our Daughters to Work Day.
C. On the Day children are taken to their parent’s work places.
D. Parents in Britain show good examples both at work and at home.
4.After her experience on Take Our Daughters to Work Day, Zarina felt ________.
A. confident about finding a job in the future
B. strange to watch her mother working in the office
C. sure about what to choose as her future career
D. interested in doing the same job as her mother
5.The author’s attitude towards the Day is ________.
A. favorable B. unclear C. critical D. neutral
高三英语阅读理解中等难度题查看答案及解析