In a world where nearly 6 million fingerprint...

In a world where nearly 6 million fingerprint records of government employees are stolen in one computer hack, and where millions of people are victims of identity theft every year, the next step in cyber security may well be mapping your brain.

Researchers at Binghamton University, State University of New York arc working on a biometric （生物特征 识别的）system that records how your brain reacts to certain images. With a little more polishing, the scientists' brainchild could become the way you get into a safe deposit box, your office or past scanners at the airport. It could replace the password for your online banking, your email or your social media accounts.

They started their project by measuring the brain waves of 30 subjects. The subjects were fitted with a cap that had 30 electrodes （电极）attached to it, and then shown various images and symbols — celebrity faces, words, pictures of food --- on a computer screen in 200-millisecond bursts. The brain\ reaction was recorded.

The idea is that every time a person needs to use a “password", he or she goes through the same procedure, and the results are matched with their first-time reaction. If the "brainprint" is compromised --- like what happened with the fingerprint records --- then the system is merely reset by running another set of images and collecting a different set of brain waves。. "Even if that was stolen, you could just cancel it and record one to something else", says professor Laszlo.

Laszlo and her team have shown that their system can be 100 percent accurate. So one of the more difficult parts of making the system practical already has been overcome. Now, they're spending much time recording accurate brainprints with as few as three electrodes, which could make recording in the future as easy as wearing a pair of special glasses. They're also working with cheaper materials and different methods to see if they can bring the cost down.

1.What does the underlined word "brainchild" in paragraph 2 refer to?

A.The brain function. B.The fingerprint record.

C.The online password. D.The biometric system.

2.Why were the images and symbols shown to the subjects?

A.To check the brain's reaction.

B.To create their brainprints.

C.To match brainprints with pictures.

D.To connect brain waves to electrodes.

3.What will happen when a brainprint fails?

A.A new one will be set

B.A spare one will be made ready beforehand.

C.The users' identity will be stolen.

D.The fingerprint record will replace it.

4.What are the researchers doing with the program now?

A.Improving its accuracy.

B.Recording more brainprints.

C.Making it user-friendly.

D.Increasing the number of electrodes.

高二英语阅读理解困难题查看答案及解析

The crowd cheered wildly at the sight of LiuXiang, who was reported __ the world record in the 110- meter hurdle race.

A. breaking　　 B. having broken　 C. to have broken　 D. break

高二英语单项填空中等难度题查看答案及解析

The crowd cheered wildly at the sight of Liu Xiang, who was reported C__ the world record in the 110-meter hurdle race.

A. breaking　　 B. having broken

C. to have broken　　 D. to break

高二英语单项填空中等难度题查看答案及解析

Since the end of World War I in 1918, Canadians, and millions of others around the world have paused at the 11th hour of the 11th day of the 11th month to honour the sacrifices our soldiers have made in different wars, fighting for the freedoms that we all enjoy today.

Known as Remembrance Day, the day originated as a tribute to the soldiers of WWI, a dark period for our young country, which claimed the lives of over 60,000 military personnel and civilians and over 16 million dead worldwide.

As there are no more surviving soldiers of WWI, today we rely on the wisdom and words of those soldiers who fought in the wars that followed, and this day now also recognizes their heroic contribution.

They tell us to always remember what those brave souls fought for, and all they ask in return is that we never forget.

That's why we wear the red poppy (罂粟花); that's why when we see a soldier in uniform we should stop him or her and say "Thank you"; that's why we take a pause from our busy lives for two short minutes today to honor that request.

Yet this message is fading away, year after year.

Take for example the terrible decision to allow parents to excuse students from Remembrance Day ceremonies at school.

Not only is this disrespectful, but it distances the student from his or her classmates.

It is difficult to understand why any Canadian parent would want to remove their child from the time-honored tradition of reading the poem In Flanders Fields, while a wreath of poppies is laid.

It is more important than ever to teach school-aged children about our history, no matter how violent it was.　 Preventing them from knowing about the realities of war is a great disservice.

Understanding why conflicts(冲突）happened, or happen today, can help shape choices and decisions they make as adults.

Of course, because we live in a free society, we cannot force an individual to do something.

It is unfortunate, but some parents now have their child "opt-out" of the services.　 These people should be reminded they are free to make such choices only because of the men and women the rest of us are remembering.

1.Which of the following is true about Remembrance Day?

A. It's only held in Canada.

B. Its ceremony lasts 11 hours.

C. It falls on November 11th each year.

D. It's to celebrate the country's independence.

2.Which of the following is Not mentioned as a Remembrance Day activity today?

A. Stopping at 11 a.m. to remember the war dead.

B. Listening to stories told by WWI soldiers.

C. Wearing a red poppy to show respect.

D. Showing gratitude to soldiers in uniform.

3.What can we learn from the passage?

A. War history is too violent for school children.

B. The writer was once a soldier in the Canadian army.

C. Few students are willing to take part in Remembrance Day ceremonies.

D. More parents are keeping their children away from frightening war stories.

4.The underlined word "It" in the last paragraph probably refers to ______.

A. the death of so many soldiers in wars

B. the fact that there were so many wars after WWI

C. people's ungratefulness for the freedom they have

D. removing children from Remembrance Day events.

5.The writer believes that ______.

A. the sacrifice of the soldiers should always be remembered

B. Remembrance Day is becoming less important for soldiers

C. schools no longer think Remembrance Day is necessary

D. people should be forced to learn about the realities of war

高二英语阅读理解中等难度题查看答案及解析

The National Gallery of Art in Washington, D.C., is one of the world's greatest art museums. Millions of people have entered its doors to see paintings by the world's fine artists. But if these priceless masterpieces are to be preserved, the Gallery must protect them carefully. The Gallery's 135-man guard force has successfully prevented them from being stolen, but protecting the paintings from nature is a greater problem.

In past times, the owners of paintings did not protect them from damaging changes in humidity (湿度) and temperature. As a result, the life of these paintings were shortened. In the National Gallery, however, humidity and temperature are carefully controlled. The building is air-conditioned in summer and heated in winter. The air-conditioning and heating system are so important to the life of the painting that the Gallery has two of each system. If one should fail, the extra one can take over.

Light is another enemy of paintings. Ultraviolet rays (紫外线) in light cause paintings to fade (褪色).  Long ago, paintings often hung in dark churches and palaces. A coat of varnish (清漆) was a protection from the weak light. But when museums took over the care of many paintings, they were often hung in brighter light than before. Soon they were in danger of fading. The damaging effects of light were increased when the museums removed the varnish coating, yellowed with age.

To protect its paintings, the National Gallery put a special kind of glass in its skylights. This glass allows visible lights to enter the building but it keeps out harmful ultraviolet rays. The Gallery has also developed new and better varnishes which help to keep paintings from fading. Thanks to these new precautions, many of the world's greatest paintings are being well protected for future generations to enjoy.

1.The text mainly tells us about ______.

A．the guard force in the National Gallery

B．protecting great paintings from nature

C．priceless paintings of past times

D．the air-conditioning and heating systems in the National Gallery

2.The underlined word "precautions" in Paragraph 4 is closest in meaning to ______.

A．decorations

B．problems

C．suggestions

D．applications

3.From the text we can infer that_______.

A．great artists painted in dark churches and palaces

B．you can touch these paintings while you are in the National Gallery

C．the care of the world's greatest paintings is both a big responsibility and a great challenge

D．the guard force in the Gallery has not done a good job

高二英语阅读理解中等难度题查看答案及解析

Our world natural park is one of the most famous parks in the world. Millions of visitors from different countries visit this park every year. In order to protect it，please do as follows：

◆Protect the natural and cultural heritage. Don’t damage or deface any buildings，displays and other facilities. Take care of all plants. Put rubbish in the bins provided.

◆Take care when you are going up and down steps or stairs and when you are walking nearby the waters.

◆Please buy tickets before entering the scenic spot. One ticket is only for one person. Adult：＄60 per ticket. Children over 6 and under 18，half price. People over 60 and children under 6 are free.

◆If you are going into the wooded and hilly lands，for your own safety，please go with three people at least and don't take any tinder(易燃物）along with you. The hill is steep so please take care of yourself.

◆This scenic spot is the reserve of water source: No fishing，swimming，washing and any behaviors that are harmful to the water source. Meanwhile，please follow the management rules of the scenic spot conscientiously.

◆Opening time：From Monday to Friday，8：00 a. m.～18：00 p.m.；From Saturday to Sunday，6：00 a. m:一24：00 p. m.

◆Small animals such as rabbits，peacocks，squirrels，frogs must be taken care of: None of them shall be killed.

If you have any trouble in visiting our world natural park，please call 477一866一7044．Our staff will do our best to help you.

1.How much will be paid for a 65-year-old man with his 8-year-old grandson?

A. Free.　　 B. ＄30.

C. ＄60.　　 D. ＄120.

2.From the passage，we can infer that the water in this park is＿．

A. clean　　 B. polluted

C. dangerous　　 D. colorful

3.Which of the following is TRUE according to the passage？

A. Tourists can hike alone in the hilly lands.

B. Small animals are under protection in the park.

C. Children can play with small animals.

D. Tourists can have a swim in the water.

高二英语阅读理解中等难度题查看答案及解析

1.Which part may be the last choice for travelling in August?

A. Asia.　　 B. Africa.

C. Southern Europe.　　 D. Southern America.

2.Besides climate,__________ can contribute to your disappointment when travelling.

A. hotel prices　　 B. peaceful environment

C. transportation expenses　　 D. troublesome holidaymakers

3.What does the underlined word“invade”in the part “in Europe” mean?

A. Immigration to.　　 B. Visit separately.

C. Enter in large numbers.　　 D. Attack and occupy.

高二英语阅读理解中等难度题查看答案及解析

In the world today, there are millions of surveillance cameras, or “spy cams”, watching and monitoring our daily activities. There are some benefits of course, as people who are breaking laws can be watched and caught using cameras and this helps keep our society and public places safe. These cameras are everywhere and most are openly visible on roads, in airports, businesses, shopping centers and government buildings and even in lifts. Even schools have started using spy cams to watch student activity and behaviour.

The cameras are so common now that we hardly ever even notice them. But the problem lies with the ones that are hidden away from our eyes and are unseen. Technology has helped develop tiny cameras that can be very well hidden and they can “spy” on shoppers, workers, babysitters and people in hotels and clubs without the people even knowing.

It is these spy cams that people feel are an invasion of privacy. Recently, in the US, there have been a number of court cases against babysitters whose actions have been recorded by their employers on hidden cameras.

The number of cameras in public and private areas is on the increase and with rising crime rates and the recent terrorist attacks, more and more surveillance cameras are being used to watch us. This means that we all have to be aware that our employers, department stores, police and even some of our friends could be spying on us at any time!

1.In the writer’s opinion, surveillance cameras _______.         .

A．do more good than wrong

B．are overused

C．should be very popular

D．ought to be more widely used

2.In what way can the surveillance camera benefit the public?

A．By helping keep social safety.

B．By monitoring the employees.

C．By watching the students in class.

D．By spying on customers.

3.According to Paragraphs 3 and 4, people _______ the use of hidden cameras.

A．object to

B．agree to

C．feel happy about

D．are fearful of

4.Spy cams will be more widely used in the future because _______.         .

A．all people want to spy

B．of the invasion of privacy

C．people enjoy being watched

D．of terrorist attacks

高二英语阅读理解中等难度题查看答案及解析

The London Underground is one of the best transport networks in the world with around 24 million journeys made each day, so it is important that everything runs smoothly. Remember the following to travel like a Londoner.

Keep right on escalator(自动梯）

London Underground asks that you stand on the right when using the escalators and leave the left free for others to walk down. If you are traveling in a big group, or with lots of shopping bags, stand and stay right and let others pass you---it will speed up the process and be a more pleasant journey for everyone!

Remember the “rush hour”

The tube network is very busy during the rush hour. You can expect the trains and stations to be overcrowded between 7:30 and 9:30 in the morning and between 17:00 and 19:00 in the evening.

Move down the platform to find more space

As you enter the station platform, you will often find more room if you walk down to the end of the platform. Here, the train carriages are usually the emptiest as well.

Carry a bottle of water in warmer moths

The London Underground is over 150 years old and although the trains have been modernized, many still lack air conditioning and cooling units. Make sure you take a bottle of water with you, especially in the summer, as the long tube journeys can get very hot.

Keep your personal belongings safe

Like any large city be cautions of pickpockets operating in the busy stations and tubes. Carry a bag with zips and keep your personal belongings and valuable items in it to avoid becoming the victims of theft.

Plan your journey on the London Underground in advance with a free tube map. Click here to download.

1.What can we know about the London Underground from the text?

A. It is used by about 24 million people every week

B. Its rush hour is around 10:00 am on weekends

C. It has a history of more than one and a half centuries.

D. It is enjoyable for people to travel on it all year round..

2.What should we do when taking the London Underground?

A. Avoid taking water along with the ride.　

B. Standing on the right when using the escalators

C. Avoid taking a large number of shopping bags

D. Walk to the middle of the platform to find more space.

3.In order not to be stolen, you are advised to__________.

A. avoid traveling in a big group

B. avoid traveling during the rush hour

C. keep your valuables in a zipped bag.

D. stay away from busy stations and tubes

4.Where would you be most likely to find the text?

A. On a website.　　　　　　　　　　　　　　　 B. On a city map.

C. On a notice board.　　　　　　　　　　　　 D. In a business report.

高二英语阅读理解中等难度题查看答案及解析

Millions of people all over the world use the word OK. In fact, some people say the word is used more often than any other word in the world. OK means all right or acceptable. It expresses agreement or approval.

1.　 Some people say it came from the Native American Indian tribe known as the Choctaw(乔克托语). The Choctaw word “okeh” means the same as the American word okay. Experts say early explorers in the American West spoke the Choctaw language in the nineteenth century.

But many people doubt this. Language expert Allen Walker Read wrote about the word “OK” in reports published in the 1960s. He said the word began being used in the 1830s. 　 2.　 Some foreign-born people wrote “all correct” as “o-l-l-k-o-r-r-e-c-t”, and used the letters OK. Other people say a railroad worker named Obadiah Kelly invented the word long ago. They said he put the first letters of his name--O and K--on each object people gave him to send on the train.

3. The organization supported Martin Van Buren for president in 1840. They called their group the OK club. The letters were taken from the name of the town where Martin was born--Old Kinderhook, New York.

Then there is the expression A-OK. It is a space-age expression. It was used in 1961 during the flight of astronaut Alan Shepard. He was the first American to be launched into space. His flight ended when his spacecraft landed in the ocean, as planned. Shepard reported, “Everything is A-OK.” 　 4. One story says it was first used during the early days of the telephone to tell an operator that a message had been received.

There are also funny ways to say okay. 5. These expressions were first used in the 1930s. Today, a character on the American television series “The Simpsons” says it another way. He says okely-doke.

A. Some people say okey-dokey or okey-doke.

B. Still others say a political organization invented the word.

C. Therefore, it has become popular in that area from then on.

D. But many experts don’t agree on what the expression means.

E. Still, language experts do not agree about where the word came from.

F. It was a short way of writing a different spelling of the word “all correct”.

G. However, some experts say the expression did not begin with the space age.

高二英语信息匹配中等难度题查看答案及解析