As more people use smart phones to pay bills and store personal information, strict password security has become more important than ever. A new study shows that free - form gestures – sweeping fingers in shapes across the screen of a smart phone—can be used to unlock phones. These gestures are less likely to be observed and reproduced by others than traditional typed passwords.
“All that it takes to steal a password is a quick eye,” said one of the researchers of the study. “With all the personal information we have on our phones today, improving their security is becoming increasingly necessary.” In developing a secure solution to this problem, the researchers studied the practicality of using free - form gestures. With the ability to create any shape in any size and location on the screen, the gestures were popular as passwords. Since users create them without following a template, the researchers predicted these gestures would allow for greater complexity.
The researchers carried out a create - test - retest experiment where 63 people were asked to create a gesture, recall it, and recall it again 10 days later. The gestures were captured on a recognizer system designed by the team. Using this data, they tested the complexity and accuracy of each gesture using information theory. The result of their analysis is that people are favorable to use free - form gestures as passwords.
To put their analysis into practice, the researchers then had seven students in computer science and engineering, each with considerable experience with touchscreens(触摸屏), attempt to steal a free - form gesture password by observing a phone user secretly. None of them were able to copy the gestures with enough accuracy. The gestures appear to be extremely powerful against attacks.
Though the testing is in its early stage and widespread adaptation of this technology is not yet clear, the research team plans to continue to analyze the security and management of free – form passwords in the future. They believe this is the first study to explore free - form gestures as passwords. They will soon publish their findings.
1.What can we learn about free - form gestures?
A. They are improving mobile security in a way.
B. Users will have to make use of simple gestures.
C. They will never be copied by others.
D. Users must move their fingers in fixed shapes.
2.The experiment in paragraph 4 is to test _________ of free - form gestures.
A. template B. application
C. accuracy D. security
3. According to the text, the researchers think that ________.
A. it is easy to steal any password with a quick eye
B. better ways of setting passwords should be developed
C. people had better not use smart phones to pay bills
D. personal information should not be stored in a phone
4.The main purpose of the text is to ________.
A. advise people to use free - form gestures
B. discuss whether smart phones are safe
C. talk about the practicality of passwords
D. introduce the study of a new password
高三英语阅读理解中等难度题
As more people use smart phones to pay bills and store personal information, strict password security has become more important than ever. A new study shows that free-form gestures–sweeping fingers in shapes across the screen of a smart phone—can be used to unlock phones. These gestures are less likely to be observed and reproduced by others than traditional typed passwords.
“All that it takes to steal a password is a quick eye,” said one of the researchers of the study. “With all the personal information we have on our phones today, improving their security is becoming increasingly necessary.” In developing a secure solution to this problem, the researchers studied the practicality of using free-form gestures. With the ability to create any shape in any size and location on the screen, the gestures were popular as passwords. Since users create them without following a template, the researchers predicted these gestures would allow for greater complexity.
The researchers carried out a create-test-retest experiment where 63 people were asked to create a gesture, recall it, and recall it again 10 days later. The gestures were captured on a recognizer system designed by the team. Using this data, they tested the complexity and accuracy of each gesture using information theory. The result of their analysis is that people are favorable to use free-form gestures as passwords.
To put their analysis into practice, the researchers then had seven students in computer science and engineering, each with considerable experience with touchscreens(触摸屏), attempt to steal a free-form gesture password by observing a phone user secretly. None of them were able to copy the gestures with enough accuracy. The gestures appear to be extremely powerful against attacks.
Though the testing is in its early stage and widespread adaptation of this technology is not yet clear, the research team plans to continue to analyze the security and management of free–form passwords in the future. They believe this is the first study to explore free-form gestures as passwords. They will soon publish their findings.
1.What can we learn about free-form gestures?
A. They are improving mobile security in a way.
B. Users will have to make use of simple gestures.
C. They will never be copied by others.
D. Users must move their fingers in fixed shapes.
2.The experiment in paragraph 4 is to test _________ of free - form gestures.
A. template B. application C. accuracy D. security
3.According to the text, the researchers think that ________.
A. it is easy to steal any password with a quick eye
B. better ways of setting passwords should be developed
C. people had better not use smart phones to pay bills
D. personal information should not be stored in a phone
4.The main purpose of the text is to ________.
A. advise people to use free-form gestures
B. discuss whether smart phones are safe
C. talk about the practicality of passwords
D. introduce the study of a new password
高三英语阅读理解中等难度题查看答案及解析
As more people use smart phones to pay bills and store personal information, strict password security has become more important than ever. A new study shows that free - form gestures – sweeping fingers in shapes across the screen of a smart phone—can be used to unlock phones. These gestures are less likely to be observed and reproduced by others than traditional typed passwords.
“All that it takes to steal a password is a quick eye,” said one of the researchers of the study. “With all the personal information we have on our phones today, improving their security is becoming increasingly necessary.” In developing a secure solution to this problem, the researchers studied the practicality of using free - form gestures. With the ability to create any shape in any size and location on the screen, the gestures were popular as passwords. Since users create them without following a template, the researchers predicted these gestures would allow for greater complexity.
The researchers carried out a create - test - retest experiment where 63 people were asked to create a gesture, recall it, and recall it again 10 days later. The gestures were captured on a recognizer system designed by the team. Using this data, they tested the complexity and accuracy of each gesture using information theory. The result of their analysis is that people are favorable to use free - form gestures as passwords.
To put their analysis into practice, the researchers then had seven students in computer science and engineering, each with considerable experience with touchscreens(触摸屏), attempt to steal a free - form gesture password by observing a phone user secretly. None of them were able to copy the gestures with enough accuracy. The gestures appear to be extremely powerful against attacks.
Though the testing is in its early stage and widespread adaptation of this technology is not yet clear, the research team plans to continue to analyze the security and management of free – form passwords in the future. They believe this is the first study to explore free - form gestures as passwords. They will soon publish their findings.
1.What can we learn about free - form gestures?
A. They are improving mobile security in a way.
B. Users will have to make use of simple gestures.
C. They will never be copied by others.
D. Users must move their fingers in fixed shapes.
2.The experiment in paragraph 4 is to test _________ of free - form gestures.
A. template B. application
C. accuracy D. security
3. According to the text, the researchers think that ________.
A. it is easy to steal any password with a quick eye
B. better ways of setting passwords should be developed
C. people had better not use smart phones to pay bills
D. personal information should not be stored in a phone
4.The main purpose of the text is to ________.
A. advise people to use free - form gestures
B. discuss whether smart phones are safe
C. talk about the practicality of passwords
D. introduce the study of a new password
高三英语阅读理解中等难度题查看答案及解析
With the increasing popularity of smart phones, more and more young people in China are glued to them.________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
高三英语书面表达中等难度题查看答案及解析
One in four children and young people could have problematic smart-phone use, according to research that also suggests such behaviour is associated with poorer mental health.
The amount of time children and teens spend using their devices has become an issue of growing concern, but experts say there is still little evidence as to whether spending time on screens is harmful in itself.
The experts behind the latest study said they wanted to look beyond the time young people were spending on smart-phones and instead explore the type of relationship they had with smart-phones.
The results suggest more than 23% of young people have an abnormal relationship with their smart-phones, and that this appears to be associated with poorer mental health-although the research cannot say whether phone use is driving such problems.
“It seems like only a minority of teenagers and young people from various different countries are self-reporting a pattern of behaviour that we recognise from other addictions,” said Dr Nicola Kalk of King’s College London, co-author of the study. “The quality of the evidence is poor, but it is enough to warrant (保证) further investigation.”
Writing in the journal BMC Psychiatry, the team reported how they looked at data from 41 studies involving a total of almost 42,000 participants across Europe, Asia and America, mainly in their teens or early 20s.
These studies used questionnaires to probe the prevalence (普遍) of problematic smart-phone use-behaviours such as being anxious when the device is not available or neglecting other activities to spend time on the smart-phone.
Taken together, the team said on average these studies suggested as many as one in four children and young people had problematic smart-phone use.
Among the studies that probed mental health, the results suggested people with problematic smart-phone use were also more likely to have depression-for which the odds (可能性) were more than three times worse-anxiety, feelings of stress and poor sleep as well as poorer educational attainment.
While the team said it was too soon to call problematic smart-phone usage an addiction, they noted that it appeared to be linked to similar patterns of behaviour and emotion.
Kalk said further studies were needed to explore if these behaviours were hard to break, or cause harm-other key features of an addiction.
The authors argued that the availability and pervasiveness of smart-phones in everyday life meant problematic use of the devices posed a different and much bigger public health problem than substances of abuse or internet gaming.
Kalk said the team were now looking at whether smart-phones were just delivering addictive content, or whether there was something inherently addictive about using such devices.
Dr Amy Orben, an expert in screen time at the University of Cambridge, raised concerns, noting that the definition of problematic internet use varied considerably across studies, and the measures used were questioned.
She said studies finding little signs of problematic internet use might have been overlooked, while the research could not say whether problematic smart-phone use caused poorer mental health.
Prof Russell Viner, President of Royal College of Paediatrics and Child Health, said that parents were navigating unchartered water when it came to technology.
“One of the most critical things for parents to consider is whether screen time is having a harmful impact on other activities like school, relationships or other interests. This study suggests that this is the case for a significant minority of children and young people,” he said.
Viner said in these cases parents should calmly install age-appropriate boundaries on smart-phone use, and ask questions about whether their children were experiencing other problems.
“While screen time is a new problem, part of the solution is tried and tested-open and regular conversations based on respect and trust,” he said.
1.Experts conducted the research to ______.
A.address the concern about adolescent behavior
B.prove spending time on screens is harmful in itself
C.calculate the time young people spent on smart-phones
D.explore young people’s relationship type with smart-phones
2.We can learn from the research that ______.
A.it involved a vast majority of participants across the globe
B.the participants were asked to report their online activities
C.researchers compared different behaviors of the participants
D.problematic smart-phone use is linked to poorer mental health
3.Which of the following might Kalk probably agree?
A.It is hard to break problematic smart-phone use.
B.Internet gaming is problematic smart-phone use.
C.Problematic smart-phone use is an addiction.
D.The research still has some limitations.
4.What’s Dr Amy Orben’s attitude towards the research findings?
A.Supportive. B.Negative.
C.Sceptical. D.Unconcerned.
5.What does the underlined part in Paragraph 16 mean?
A.Screen time is a new challenge to parents.
B.Technology is posing a threat to parents.
C.Parents are lost in the sea of technology.
D.Parents use technology to chart water.
6.According to Viner, what should parents do to solve the problem?
A.Keep track of the screen time of children.
B.Strictly prohibit children from using devices.
C.Have a sincere communication with children.
D.Evaluate the impact of screen time on children.
高三英语阅读理解困难题查看答案及解析
Nowadays, more and more teenagers use smart phones, tablets and other mobile devices more than ever before. And the amount of time they spend on these devices is only likely to increase in the future. But are all these changes good?
We sometimes call children who are able to use mobile devices and technology easily digital natives. They can text, email, get Wi-Fi, and download. Some experts say that long periods of time spent chatting to friends online, playing video games and listening to mp3s, for example, may possibly change how their brains work.
Then there is the question of privacy. All this online activity creates a digital footprint. Every time we share a photo or a post on social media, and every time we search for something on the Internet, information about our activity is stored somewhere.
Our inability to control what happens to our children's digital footprint and their personal privacy has big possibilities. It might become normal for companies to ask their employees for their social media qualifications. We are also becoming more aware that companies and governments may be able to 'listen in' on our communications. So it is important to make our children aware of the possible results of over sharing.
Another area where the digital world may have a big effect is in education. One worry is that kids who spend a lot of time online at home are sometimes unable to socialize properly with other children when they are at school. Other experts point out that, when it comes to children and technology, the children are the experts, not the teachers. They say that we should stop seeing online as 'bad' and offline as 'good' and there is evidence of innovative work in some schools.
So, do we really need to rescue our children from the dangers of the digital world?
1. Which of the following can summarize the main idea of the text?
A. Do we need to rescue our kids from the digital world?
B. Should children learn to use digital technology?
C. Are there changes in children’s school life?
D. Should teachers accept changes in our life?
2.According to the second paragraph, what is the possible effect of digital childhood?
A. Children can grow up quickly.
B. Children can read texts fluently.
C. Children’s way of thinking may be changed.
D. Children may become mentally disabled.
3.All the following may happen to our digital footprints EXCEPT________
A. When surfing the Internet, our digital footprints are saved.
B. Some business societies may take advantage of the information.
C. Government may look into our communication through the Internet.
D. Digital pictures may be printed by our computer automatically.
4.Why are many teachers doubtful about digital technology?
A. Because some students can not do well in studies.
B. Because some teachers haven’t changed for years.
C. Because some students addicted to digital technology can not socialize well.
D. Because some teachers addicted to tradition technology cannot teach well.
高三英语阅读理解中等难度题查看答案及解析
A new phone app uses vibrations from smart phones to warn people about earthquakes.
The phone app _______ sudden shaking of the earth’s surface through sensors in smart phones. It is called MyShake. It is the work of four researchers at the University of California, Berkeley. They said they created a worldwide warning system that would _______ people and give them time to prepare. The MyShake app is _______ only for Android phones.
Smart phones are _______ accelerometers (加速度感应器). These instruments measure movement, like that of a car or airplane. MyShake uses phone accelerometers to measure seismic (地震的) activity. It has been _______ to know the difference between normal activity and earthquake movement. The software developers say their app is right 93 percent of the time.
A smart phone sends seismic information to the app developers. If the developers receive several notifications _______, it recognizes that an earthquake might be taking place or will take place soon.
Using information sent from the app, the network then _______ the location and strength of the quake in real time. MyShake can record magnitude 5.0 earthquakes at distances of 10 kilometers or less.
MyShake uses very _______ power, according to its developers. Only when seismic activity is _______ by the app does it become active and sends data to the network. The app works best when your phone is resting on a ________ surface, like a table.
The developers hope that MyShake can add to information collected by the U.S. Geological Survey. That U.S. agency has created the Earthquake Early Warning System, also ________ EEW. The EEW has deployed (部署) sensors for measuring quakes in many areas.
In places where no such equipment ________, MyShake may be the only method of early quake ________. The app also shows ways to stay safer during an earthquake. The developers say it will become more effective as more people use it.
“Our goal is to build a worldwide seismic network and use the data to________ the effects of earthquakes on us as individuals and on society as a whole,” say the researchers.
The developers say they hope to add a feature that would ________ people about a possible tsunami: a huge wave after an earthquake.
1.A.reports B.recognizes C.reveals D.reviews
2.A.infer B.include C.influence D.inform
3.A.acquired B.available C.affordable D.approachable
4.A.equipped with B.made up of C.filled with D.in need of
5.A.programmed B.protected C.prohibited D.promised
6.A.from different places B.from one area C.from the same phone D.from another developer
7.A.controls B.connects C.estimates D.receives
8.A.much B.little C.excessive D.green
9.A.activated B.sensed C.resisted D.issued
10.A.low B.wooden C.high D.flat
11.A.honored with B.called for C.known as D.defined as
12.A.exists B.forms C.counts D.exploits
13.A.protection B.diagnosis C.detection D.resistance
14.A.raise B.receive C.record D.reduce
15.A.confirm B.appoint C.alert D.acknowledge
高三英语完形填空中等难度题查看答案及解析
Nowadays almost everyone prefers to use a smart mobile phone________functions are more practical.
A. which B. where C. what D.whose
高三英语单项填空中等难度题查看答案及解析
Today, children start to use computers, smart phones and tablets from a very young age. Many parents and child experts believe that this is very wrong. They claim that early exposure to technology can make individuals lazy and distracted. That may be true, but there it is practically impossible to change the world we live in now. What we can do is embrace smart mobile technologies the best way we can. That is Microsoft’s Windows 8 App Store. One of its applications is entirely educational, Windows 8. There, students of all ages can find apps that can greatly help them in their studies. We have prepared the 4 best of them.
Wikipedia—Wikipedia is the first place where students search for information. The articles on the popular website are updated regularly and they include many details, figures and resources. With this app, you can access Wikipedia faster than ever.
SAS Flash Cards—One of the most effective ways to learn your school or university material is by using the so-called “flash cards”. This app, however, allows users to create an entire set of cards in a matter of minutes. Also, the cards can be divided into different subject categories, which makes studying easier and more fun than ever before.
Kindle Reader—If you don't have a Kindle e-Book reader, you can use your Windows 8 device. Just install this app and the Kindle word will land in your smart phone, tablet or laptop. With the Kin-die Reader W8 app, you can also organize and store all of your favorite books.
My Study Life—This application is the mobile version of the website My Study Life. The app can be very useful for students in terms of school and university organization. There you can store all the information you want like homework, assignments and papers. In addition, you can create your own school calendar that will remind you of your upcoming exams, for instance.
There is one main reason why these Windows 8 apps are appropriate for students. Apart from useful, they are completely free! All you need to do is go to Microsoft’s Windows 8 App Store, download the applications you want and install them onto your device.
1.The underlined part means we should __________.
A. update the technologies as often as we can
B. accept the smart mobile applications willingly
C. purchase a smart mobile with much money
D. develop some new smart mobile functions
2.If you want to know of Rafael Nadal you can use __________.
A. Wikipedia B. SAS Flash Cards C. Kindle Reader D. My Study Life
3.The function of “flash cards” is __________.
A. to make your smart phone closely attached
B. to update your information every day
C. to help you get your favorite reading materials
D. to help students learn their subjects easily
4.We can learn from the passage that __________.
A. students can buy the apps at a certain discount
B. the applications above are all for nothing
C. you should pay much to download the apps
D. It’s easy for parents to keep a watch on their children
5.Which of the following is the best title for the passage?
A. Top Windows 8 Apps for Students
B. Windows 8 to Be Updated for Students
C. Games Apps in Windows 8 Store
D. Microsoft Company and Its Apps
高三英语阅读理解中等难度题查看答案及解析
In the near future,we may be using our eyes to operate our smart-phones and tablets,even when it comes to playing popular games like Fruit Ninja.
The Gaze Group has been developing eye-controlled computer technology for nearly 20 years.But those devices have been firstly designed to help those with disabilities,and are very expensive.
“After a while,we figured out that probably the best way is to go for a mass-market way,” says Gaze’s Sune Alstrup Johansen.“where everybody would have this available."
Johansen and some of his colleagues have formed a new company,the Eye Tribe,which is hoping to develop the technology on a mass commercial level.
The technology works with the help of the computing device toward the user’s face. After making sure of the user’s eye movements,the technology is then able to easily find where a person’s eyes are moving,and then allow the eyes to control a cursor(光标).
“Our software can then determine the location of the eyes and know where you’re looking on the screen to make sure what you’re looking at,“reads an explanation on the Eye Tribe site.
There has been a gradual change toward hands-free technology in recent years, particularly in the gaming world.Recently Xbox released the Kinect device,which lets users control their Xbox and play certain games using only their hands,legs and voices. But still,most of these devices have been more of a gimmick than a practical way to use one’s hands to control a mobile device.Johansen said a replaceable filter(滤光器)would be a cheap,convenient way for most consumers.
And even as companies like The Eye Tribe work to create such a product for the average user, making the eye-controlled technology more accessible and less expensive will have similar benefits for physically disabled users.
For more articles on modern science,please CLICK here.
1.Which of the following is the main idea of the passage?
A.An introduction of a new device.
B.An introduction of smart-phones.
C.An introduction of eye-controlling technology.
D.An introduction of a new technology for the disabled.
2.The underlined word“gimmick” probably means________.
A.a trick B.a way C.a lie D.a dream
3.According to the passage,we can learn that________.
A.the eye-controlling technology was first developed for the blind
B.the present developing 0f the technology will bring no good
C.there is no such a phone as we can use only with our eyes at present
D.the eye-controlling technology is only intended for the disabled people
4.This passage is probably taken from________.
A.an experiment report B.a science fiction
C.a school textbook D.a science website
高三英语阅读理解中等难度题查看答案及解析
In the near future, we may be using our eyes to operate our smart-phones and tablets, even when it comes to playing popular games like Fruit Ninja.
The Gaze Group has been developing eye-controlled computer technology for nearly 20 years. But those devices have been firstly designed to help those with disabilities, and are very expensive.
“After a while, we figured out that probably the best way is to go for a mass-market way,” says Gaze’s Sune Alstrup Johansen. “where everybody would have this available."
Johansen and some of his colleagues have formed a new company, the Eye Tribe, which is hoping to develop the technology on a mass commercial level.
The technology works with the help of the computing device toward the user’s face. After making sure of the user’s eye movements, the technology is then able to easily find where a person’s eyes are moving, and then allow the eyes to control a cursor(光标).
“Our software can then determine the location of the eyes and know where you’re looking on the screen to make sure what you’re looking at, ” reads an explanation on the Eye Tribe site.
There has been a gradual change toward hands-free technology in recent years, particularly in the gaming world. Recently Xbox released the Kinect device, which lets users control their Xbox and play certain games using only their hands, legs and voices. But still, most of these devices have been more of a gimmick than a practical way to use one’s hands to control a mobile device. Johansen said a replaceable filter(滤光器)would be a cheap, convenient way for most consumers.
And even as companies like The Eye Tribe work to create such a product for the average user, making the eye-controlled technology more accessible and less expensive will have similar benefits for physically disabled users.
For more articles on modern science,please CLICK here.
1.Which of the following is the main idea of the passage?
A. An introduction of eye-controlling technology
B. An introduction of a new device.
C. An introduction of smart-phones
D. An introduction of a new technology for the disabled.
2.The underlined word “gimmick” probably means ___________.
A. a way B. a trick C. a lie D. a dream
3.According to the passage, we can learn that ___________.
A. the eye-controlling technology was first developed for the blind
B. the present developing of the technology will bring no good
C. the eye-controlling technology is only intended for the disabled people
D. there is no such a phone as we can use only with our eyes at present
4.This passage is probably taken from ___________.
A. an experiment report B. a science fiction
C. a science website D. a school textbook
高三英语阅读理解中等难度题查看答案及解析