Researchers have developed new software using smart phones’GPS and imaging abilities that determine the exact location of distant objects as well as monitor the speed and direction of moving objects.The software could eventually allow smart phone-armed soldiers to target the location of their enemies.On the home front,the software could be used by everyone,including golfers judging distance to the green and biologists documenting the location of a rare animal without disturbing it.
“The great advantage of a Smartphone is that it provides so many tools in a single,readily available,relatively inexpensive package,”said Qia Wang,a doctoral student who led the development of the software.“For example,on the battlefield,a soldier needs a rangefinder,compass,GPS and other tools to get information before calling in an air strike.With our software,the soldier can have all those instruments in one device that can be purchased off the shelf.When that soldier returns from War,she can use the same Software to protect her family by clocking a speeder near her children’s school and catching the criminal on video.”
Wang and his colleagues developed their software to locate and track:
Targets of known size—when the size of the target is known.a(chǎn) single image is enough to pinpoint the target’s location.
Targets of unknown size—If the exact size of a target is unknown,the software uses two images to triangulate the location of the target·
Moving targets—By taking a short video of a moving target,the smartphone software can calculate how fast the target is moving and in what direction it is going.
“Currently,our software is limited by the physical abilities of smartphone hardware,but the devices are improving rapidly,”Wang said.“We expect that improvements in GPS accuracy,battery life and camera resolution will allow our software to make even more accurate observations.”
【小題1】From Paragraph 1 we can know that the new software can.
A.determine the speed of moving objects |
B.1ocate objects in the distance exactly |
C.defend soldiers against their enemies |
D.help biologists protect rare animal |
A.make an advertisement |
B.describe the software briefly |
C.show the benefits of the software |
D.present the functions of smartphones |
A.By taking a short video. |
B.By locating its position. |
C.By taking a single image. |
D.By measuring real-life size. |
A.Casual. | B.Optimistic. | C.Cautious. | D.Flexible |
A.Qia Wang,a Talented Doctoral Student |
B.Use Smartphones to Their Full Potential |
C.Targeting and Tracking With Smartphones |
D.Smartphone-armed Soldiers on the Battlefield |
【小題1】B
【小題2】C
【小題3】A
【小題4】B
【小題5】C
解析試題分析:這是一篇科普性文章。研究人員已經(jīng)開發(fā)出新的軟件,使用智能手機(jī)的GPS和成像功能,確定遠(yuǎn)處物體的確切位置以及監(jiān)控運(yùn)動(dòng)物體的速度和方向。
【小題1】B細(xì)節(jié)理解題。根據(jù)第一段中的“determine the exact location of distant objects”“allow smartphonearmed soldiers to target the location of their enemies”以及“biologists documenting the location of a rare animal”可知,新軟件可以準(zhǔn)確定位遠(yuǎn)距離的物體。故答案為B。
【小題2】C細(xì)節(jié)理解題。從文章第二段的內(nèi)容看,博士生王洽舉例說(shuō)在戰(zhàn)場(chǎng)上,新軟件可以集多種作用于一身,幫助士兵偵察;而當(dāng)士兵從戰(zhàn)場(chǎng)上返回時(shí),她又可以使用相同的軟件保護(hù)她的家人。由此可知該例子是為了說(shuō)明新軟件的優(yōu)勢(shì)。故答案為C。
【小題3】A細(xì)節(jié)理解題。從文章倒數(shù)第二段中的“Moving targets — By taking a short video of a moving target”可知答案為A。
【小題4】B推理判斷題。通讀全文,尤其是根據(jù)文章的最后一句“We expect that improvements in GPS accuracy, battery life and camera resolution will allow our software to make even more accurate observations.”可推知王洽對(duì)新軟件使用前景的態(tài)度是樂觀的。
【小題5】C標(biāo)題歸納題。通讀全文內(nèi)容可知,本文主要講述的是智能手機(jī)應(yīng)用程序的跟蹤與定位功能,故C項(xiàng)為最佳標(biāo)題。
考點(diǎn):科普類閱讀。
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科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解
The health of millions could be at risk because medicinal plants are being used up.These plants are used to make traditional medicine,including drugs to fight cancer.“The loss of medicinal plants is a quiet disaster,”says Sara Oldfield,secretary general of the NGO Botanic Gardens Conservation International.
Most people worldwide (including 80 percent of all Africans)rely on herbal medicines(草藥)which are got mostly from wild plants.But some 15,000 of the 50,000 medicinal species are under threat of dying out,according to a report from the international conversation group Plantlife.Shortages have been reported in China,India,Kenya,Nepal,Tanzania and Uganda.
Over?harvesting does the most harm,though pollution and competition from invasive(侵略性的)species are both responsible.“Businessmen generally harvest medicinal plants,not caring about sustain ability,”the Plantlife report says.“Damage is serious partly because they have no idea of it,but it is mainly because such collection is unorganized.” Medicinal trees at risk include the Himalayan yew and the African cherry,which are used to treat some cancers.
The solution,says the report's author,Alan Hamilton,is to encourage local people to protect these plants.Ten projects studied by Plantlife in India,Pakistan,China,Nepal,Uganda and Kenya showed this method can succeed.In Uganda the project has kept a sustainable supply of low?cost cancer treatments,and in China a public run medicinal plant project has been created for the first time.
“Improving health,earning an income and keeping cultural traditions are important in encouraging people to protect medicinal plants,”says Hamilton.“You have to pay attention to what people are interested in.” Ghillean Prance,the former director of the Royal Botanic Gardens at Kew in London,agrees that medicinal plants are in need of protection.
“Not nearly enough is being done,”he told New Scientist.“We are destroying the very plants that are of most use to us.”
【小題1】What is the passage mainly about?
A.The function of medicinal plants. |
B.The importance of traditional medicine. |
C.More and more people rely on herbal medicines. |
D.The dangerous situation of medicinal plants and ways of protecting them. |
A.About 30% of medicinal species are at risk of dying out. |
B.Medicinal plants are mainly used to treat cancers. |
C.80% of African countries are reported to be short of medicinal plants. |
D.The problem of the loss of medicinal plants appeared suddenly. |
A.A lack of knowledge of sustainability. |
B.Invasion by other species. |
C.Environmental pollution. |
D.Improper harvesting. |
A.Improving people's health. |
B.Letting people earn more. |
C.Working together with the government. |
D.Persuading the locals to protect them. |
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科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解
What's going to happen in the future? Will robots take over our planet? Will computers become smarter than us? Not likely. But here are some things that scientists say are most likely to happen 10 to 30 years later from now, according to the BBC.
1.Digital money
We used to pay with cash for everything we bought. Now when we swipe(刷) our bus pass or use a credit card to shop online, money is spent without us even seeing it. In fact, we are already using one type of digital money.
You have to admit that using a card is much easier than searching your pockets for change. It is also safer than carrying a lot of cash.
When ATM cards were first introduced, they were not accepted everywhere. But now it's hard to live without them. People in Sweden completely stopped using cash last year, according to the Associated Press, and the US might be next.
2.Bionic(能力超人的)eye
It's no longer something only in a scifi movie. People who are blind may have a chance to get their sight back—by wearing bionic eyes.
A blind eye can no longer sense light, but a bionic eye can use a camera to “see” the environment and send data directly to the brain.
Although the bionic eye that's out now only allows patients to see lights and unclear shapes, a highresolution(高清晰度的) version could be just a few years away.
3.Selfdriving cars
Everything is going automatic these days—washing machines, ticket selling machines and even cars. Unlike a human driver, a selfdriving car won't get distracted by a phone call, the radio or something outside the window. Sensors and cameras on the car would allow it to stick strictly to the rules of the road and keep a safe distance from other cars. This would greatly reduce the number of road accidents. You could even take a nap while the car drives itself.
Many vehicle companies are now planning selfdriving cars. “By 2040, driverless vehicles will be widely accepted and possibly be the dominant vehicles on the road,” said Jeffrey Miller, professor at the University of Alaska Anchorage, US, in Wired magazine.
【小題1】The underlined word “distracted” in the article is closest in meaning to “________”.
A.directed | B.discouraged |
C.a(chǎn)ttacked | D.disturbed |
A.optimistic | B.pessimistic |
C.doubtful | D.cautious |
A.Learning Kit | B.Campus Trends |
C.Entertainment | D.Technology |
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科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解
Scientists at Royal Holloway, University of London and Queen Mary, University of London have discovered that bees learn to fly the shortest possible route between flowers even if they discover the flowers in a different order. Bees are effectively solving the “traveling salesman problem”, and they are the first creatures found to do this.
The traveling salesman must find the shortest route that allows him to visit all locations on his route. Computers solve it by comparing the length of all possible routes and choosing the shortest, and it can keep computers busy for days. However, bees solve it without computer assistance using a brain the size of grass seed. Dr. Nigel Raine, from the School of Biological Sciences at Royal Holloway explains, “Bees solve traveling salesman problems every day. They visit flowers at multiple locations and because bees use lots of energy to fly, they find a route which keeps flying to a minimum. ”
The team used the computer to control artificial flowers to test whether bees would follow a route defined by the order in which they discovered the flowers or if they would find the shortest route. After exploring the location of the flowers, bees quickly learned to fly the shortest route.
As well as improving our understanding of how bees move around the landscape pollinating(授粉)crops and wild flowers, this research, which is due to be published in The American Naturalist, has other applications. Our lifestyle relies on networks such as traffic on the roads, information flow on the Web and business supply chains. By understanding how bees can solve their problems with such a tiny brain, we can improve our management of these everyday networks without needing lots of computer time. Dr. Raine adds, “Despite their tiny brains, bees are capable of extraordinary feats of behavior. We need to understand how they can solve the traveling salesman problem without a computer. ”
【小題1】 What would be the best title of the passage?
A.Bees help salesmen travel |
B.Tiny-brained bees solve a complex mathematical problem |
C.How bees discover the flowers |
D.How to solve the “traveling salesman problem” |
A.can be solved by a computer easily |
B.can’t even be solved by a computer |
C.can puzzle both people and computers |
D.remains to be solved by scientists |
A.provide further proof for the research |
B.tell us how bees can fly the shortest route between flowers |
C.tell us how the research about bees’ flying route was conducted |
D.explain the importance of the research |
A.a(chǎn)ll creatures are smarter than computers |
B.the research about bees’ flying route can be applied to many fields |
C.our networks are more complex than bees’ ones |
D.with the help of the computer we can find out how bees can solve the “traveling salesman problem” |
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科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解
One night in March 1999, a man was driving from California to Oregon, US, to visit some friends. He had stopped his car to have some food when he started to hear strange noises. Turning on the headlights, he saw an 8-foot-tall creature covered in thick, dark hair. The creature stared at him for a minute, turned in the road and walked off slowly into the woods.
In the past 50 years alone, there have been thousands of reported sightings of similar creatures in the US, Canada, the Himalayas(喜馬拉雅山地區(qū))and even Hubei Province in China. The creature is known as bigfoot.
Bigfoot is said to be a very tall(between 2 and 4. 5 metres), ape-like(類人猿似的)creature that is covered in hair and walks upright on two legs. It is very wary(警惕的)of human beings.
Believers think bigfoot is a direct descendent(后代)of ancient gigantopithecus(巨猿). But it remains one of the planet’s undiscovered secrets. There is a little evidence(證據(jù))to support the believers’ theory: traces of hair, footprints and body prints as well as the reported sightings. Some people have even showed what they say with photos or films of bigfoot.
But so far, no one has found bones or any other definite proof that the giant creature exists.
As a result many people believe the evidence is just part of a big trick.
The footprints are easy to make and they say: all you need to do is to make two large feet out of plaster(石膏), attach them to the bottom of your shoes and walk with big steps. As for the photos and films, they are just people dressed in ape suits.
They also say the sightings are not real, just people making mistakes. For example, bigfoot could be a bear living in the wild that sometimes stands up on its back legs.
【小題1】 So far what we can be sure about is that .
A.there exist savages(野人)in several places in the world |
B.there are some traces of hair, footprints and body prints of the “bigfoot” |
C.bigfoot is a direct descendent of ancient gigantopithecus |
D.a(chǎn)ll the big foot discovered have the same look |
A.1999 | B.the 1960’s |
C.the 1950’s | D.the 1940’s |
A.may fool the world into believing |
B.have definite evidences to prove |
C.refuse to believe |
D.will soon offer proofs of |
A.a(chǎn)pes |
B.bears |
C.gigantopithecus |
D.people dressed in animal skins |
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科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解
The £109 Nest Protect Smoke Alarm promises Internet alerts(警報(bào))and an end to the low battery chirp(短而尖的叫聲). Besides, it uses a voice to tell you where the fire is.
The alarm is the first UK product from Nest, which is run by iPod-inventor Tony Fadell. The company claims the device’s batteries will last for up to seven years. The device will offer a spoken warning before it sounds a major alarm. Also it will use text messages and apps on your phones to alert users to low-level risks.
The present smoke alarms constantly alert users to non-existent threats, which will make many users annoyed and finally remove their batteries altogether. “We’ve all experienced the smoke alarm going off while we’re cooking. Sometimes, we need to search for the source of that non-stop low-battery chirp at midnight,” said Fadell. “Therefore, every time a smoke alarm cries wolf, we trust it a little less, and then — in a moment of frustration — we take the batteries out to stop the beep(嘟嘟聲). And that leaves us and our families at risk.”
If the Protect smoke alarms are used, they can be set up in up to ten zones, so that the clear warnings tell users where the risk has been detected.
“Safety shouldn’t be annoying,” said Matt Rogers, Nest founder and vice president of engineering. “It was unacceptable to us that one in eight houses in the UK has a non-functioning smoke alarm. These products are required by law and are supposed to keep us safe, yet people hate them. We wanted to change that.”
【小題1】For what purpose did Nest create the Protect Smoke Alarm?
A.To predict low-level fire risks. | B.To experiment with a new battery. |
C.To improve present smoke alarms. | D.To avoid the low-battery chirp. |
A.One of his cooking experiences. |
B.Disadvantages of present smoke alarms. |
C.His growing distrust of smoke alarms. |
D.His source of annoyance to crying wolf. |
A.a(chǎn), b, c | B.c, d, e | C.a(chǎn), c, e | D.b, c, e |
A.In the UK people seldom set up smoke alarms. |
B.Matt Rogers didn’t like the safety requirements. |
C.Non-functioning smoke alarms make people annoyed. |
D.The government should pay attention to safety issues. |
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科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解
IT’S never a real problem for us when the weather gets cold. We can put on more clothes, stay next to a fireplace, turn on the air conditioner or simply travel to a warmer city to spend the winter – people have many different ways of coping with the cold.
But things are not as easy for plants. Unlike humans, plants can’t move to escape the cold or generate heat to keep themselves warm. So how do they manage to survive the freezing winter?
It turns out that plants have their own strategies too, said a study published on Dec 22 in the journal Nature.
According to researcher Amy Zanne of George Washington University, US, the cold is a big challenge for plants. Their living tissues can be damaged when they freeze. “It’s like a plant’s equivalent to frostbite (凍瘡),” Zanne told Science Daily. Also, the process of freezing and thawing (解凍) can cause air bubbles to form in the plant’s water transport system. “If enough of these air bubbles come together as water thaws they can block the flow of water from the roots to the leaves and kill the plant,” she explained.
To live through cold weather, plants have developed three traits, according to the study. Some plants, such as oak trees, avoid freezing damage by dropping their leaves before the winter chill sets in – effectively shutting off the flow of water between roots and leaves – and growing new leaves and water transport cells when the warm spring returns.
Other plants, pine trees for example, protect themselves by narrowing their water transport cells, which makes it easier for cells to travel among air bubbles.
The third strategy is also the most extreme – some plants die on the ground in winter and start growing as new plants from seeds when conditions get warmer.
However, the study also found that these smart strategies were developed very slowly – over millions of years of evolution. This leads scientists to worry that plants may not be able to deal with human-caused climate change, which has only started occurring over the past few decades.
Scientists are hoping that this study can help people find possible ways to save plants from the threat of climate change.
【小題1】What is the article mainly about?
A.Why plants are not afraid of the winter chill. |
B.The ways that plants survive cold weather. |
C.Changes in plants’ water transport system in winter. |
D.How plants evolve to keep up with climate change. |
A.it produces more living tissues to stay alive |
B.its leaves quickly fall out and its roots begin to die |
C.lots of air bubbles form in its water transport system |
D.its water transport system could be blocked in the spring |
A.By dropping their leaves before winter. |
B.By narrowing their water transport cells. |
C.By widening their water transport cells. |
D.By leaving only the seeds alive and growing from the seeds in the spring. |
A.Plants may not be able to adapt to the increasingly cold climate. |
B.Human activities might have a great impact on the pace of plants’ evolution. |
C.Plants may not be able to evolve fast enough to adapt to human-caused climate change. |
D.The strategies plants develop are not good enough to protect them against cold. |
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科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解
Are you interested in country music?I like it very much !It will take me away for a while after I am tired .The guitars and songs will take me to mountains and fields.
Country music usually talks of everyday life and feelings.It’s the spirit of America ,easy to understand ,slow and simple.
Country music developed in the Southern United States.It was the folk music of American countryside.Many of songs tell about the lives of farmers .They talk about love,crops or death.
The life of the countryside can be hard,so the words in country music are often sad.At first,people played the music only at family parties.But it became more popular later. In the 1920s,people played country songs on the radio,and they made them into records.
When people in the countryside moved to towns and cities to look for work,they took their music with them.Country music continued to change and became popular across America.
John Denver was one of America’s most famous country singers in the 1970s.His song “Take Me home,Country Roads”is well-known and people still play it today.
【小題1】Country music is usually about _______.
A.everyday life and feelings | B.farmers’s feelings |
C.the lives of workers | D.the lives of students |
A.in John Denver’s city |
B.in the Southern United States. |
C.in the Northern United States |
D.in the middle of United States |
A.in the 1920s | B.in 1920 | C.in the 1970s | D.in 1970 |
A.Because city people liked the music. |
B.Because farmers moved to cities with their music and it continued to change. |
C.Because country music talked about city people’s lives. |
D.Because country music is very famous |
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科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解
It is difficult for doctors to help a person with a damaged brain. Without enough blood, the brain lives for only three to five minutes. More often the doctors can't fix the damage. Sometimes they are afraid to try something to help because it is dangerous to work on the brain. The doctors might make the person worse if he operates on the brain.
Dr. Robert White, a famous professor and doctor, thinks he knows a way to help. He thinks doctors should make the brain very cold. If it is very cold, the brain can live without blood for 30 minutes. This gives the doctor a longer time to do something for the brain.
Dr. White tried his idea on 13 monkeys. First he taught them to do different jobs, then he operated on them. He made the monkeys' blood go through a machine. The machine cooled the blood. Then the machine sent the blood back to the monkeys' brains. When the brain's temperature was 10°C, Dr. White stopped the blood to the brain. After 30 minutes he turned the blood back on. He warmed the blood again. After their operations the monkeys were like they had been before. They were healthy and busy. Each one could still do the jobs the doctor had taught them.
【小題1】The biggest difficulty in operating on the damaged brain is that _______.
A.the time is too short for doctors |
B.the patients are often too nervous |
C.the damage is extremely hard to fix |
D.the blood-cooling machine might break down |
A.taking the blood out of the brain |
B.trying the operation on monkeys first |
C.having the blood go through a machine |
D.lowering the brain' s temperature |
A.can last as long as 30 minutes |
B.can keep the brain' s blood warm |
C.can keep the patient' s brain healthy |
D.can help monkeys do different jobs |
A.a(chǎn),b,c,d | B.c,a,b,d | C.c, b, d, a | D.b, c, d, a |
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