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
【小題2】.The example given by Qia Wang is meant to ________________.
A.make an advertisement
B.describe the software briefly
C.show the benefits of the software
D.present the functions of smartphones
【小題3】.How does the software calculate the speed of a moving object?
A.By taking a short video. B.By locating its position.
C.By taking a single image. D.By measuring real-life size.
【小題4】.What’s Qia Wang’s attitude towards the future of the software?
A.Casual. B.Optimistic.
C.Cautious. D.Flexible
【小題5】.What is the best title of the text?
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:這篇文章主要介紹了一款用智能手機(jī)定位跟蹤軟件。
【小題1】細(xì)節(jié)題:根據(jù)Researchers have developed new software using smart phones’GPS and imaging abilities that determine the exact location of distant objects.可知這款新軟件用于確定遠(yuǎn)方物體的準(zhǔn)確方位, 故選B。
【小題2】細(xì)節(jié)題:根據(jù)"“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,意思是展示軟件的優(yōu)點,故選C。
【小題3】細(xì)節(jié)題:根據(jù)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.可知使用視頻錄像跟蹤移動物體,故選A。
【小題4】推斷題:根據(jù)but the devices are improving rapidly,”Wang said..可知Qia Wang對這款軟件前景很有信心,故選B。
【小題5】主旨題,根據(jù)上下文推斷這是介紹了一款用智能手機(jī)定位跟蹤軟件。故選C。
考點:考查科研類閱讀

練習(xí)冊系列答案
相關(guān)習(xí)題

科目:高中英語 來源: 題型:閱讀理解

People say teenagers are no good. They make too much noise in shopping malls; they drive carelessly up and down America’s main streets. And at least some of the time those things are true.
But we shouldn’t forget that there are hard moments in the life of a teenager too.
I watched such a moment not long ago at a woman’s funeral which happened in a church. A teenage grandson stepped forward. Softly he began:“I want to share a few values that Nana taught me. She never failed to see light in any situation. When our family dog would attack her, what would Nana say? Oh, what beautiful markings that dog has.” That was Nana.
“She was a strong woman who often lived in the shadow of my grandpa, who was a successful businessman in this city. But she was the one behind the scenes who provided the strength and support for Grandpa’s career,” he said, with a voice now trembling. “That was Nana’s way.”
Finally, in a voice breaking free of sorrow, he looked up and said, “Nana taught me courage. She put up a fight to the end, when she died peacefully, which is how she lived her life. That was Nana’s way, and I hope I can carry on in the same manner.”
There are no hearts as sensitive as those of teenagers, because everything is happening to them for the first time. The trouble with teenagers is that they haven’t learned to be controlled. When that boy rose to speak about the woman who had been his dearest friend, his honest voice dragged each of us out into the open where we could no longer hide. I was moved and learned a lot.
【小題1】According to the first paragraph, ______. 

A.peopledon’tthinkhighlyoftheteenagers
B.youngpeoplearelivingahardlife
C.peopleshouldn’tforgetyoungpeople
D.youngpeopleshouldkeepquietbeforethepublic
【小題2】From the boy’s speech, we know his grandmother ______.
A.hadgreatinfluenceovertheboywhenshewasalive
B.likeddogsverymucheveniftheyoftenattackedher
C.couldseeeverythingaroundherthoughshewasold
D.wasaweakwomanlivingintheshadowofhisgrandpa
【小題3】We can infer from the passage that the boy ______. 
A.wasfilledwithsadnessandgaveupfinishinghistalk
B.wasalwaysverygoodatexpressinghimself
C.practicedalotinordertogiveamovingspeech
D.hadgreatdifficultyinacceptingthelossofNana
【小題4】The writer wanted to tell the readers ______. 
A.theyoungpeopleweretooweaktofacecertainfacts
B.theyoungpeoplehavelearnedtocontrolthemselves
C.theadultscouldlearnsomethingvaluablefromtheyoung
D.theadultsshouldteachtheyounghowtodealwiththedeath

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

I began to grow up that winter night when my parents and I were returning from my aunt's house, and my mother said that we might soon be leaving for America. We were on the bus then. I was crying, and some people on the bus were turning around to look at me. I remember that I could not bear the thought of never hearing again the radio program for school children to which I listened every morning.
I do not remember myself crying for this reason again. In fact, I think I cried very little when I was saying goodbye to my friends and relatives. When we were leaving I thought about all the places I was going to see-—the strange and magical places I had known only from books and pictures. The country I was leaving never to come back was hardly in my head then.
The four years that followed taught me the importance of optimism, but the idea did not come to me at once. For the first two years in New York I was really lost—having to study in three schools as a result of family moves. I did not quite know what I was or what I should be. Mother remarried, and things became even more complex for me. Some time passed before my stepfather and I got used to each other. I was often sad, and saw no end to "the hard times."
My responsibilities in the family increased a lot since I knew English better than everyone else at home. I wrote letters, filled out forms, translated at interviews with Immigration officers, took my grandparents to the doctor and translated there, and even discussed telephone bills with company representatives.
From my experiences I have learned one important rule: almost all common troubles eventually go away! Something good is certain to happen in the end when you do not give up, and just wait a little! I believe that my life will turn out all right, even though it will not be that easy.
【小題1】How did the author get to know America?

A.From her relatives. B.From her mother.
C.From books and pictures. D.From radio programs.
【小題2】Upon leaving for America the author felt_______.
A.confused B.excited
C.worried D.a(chǎn)mazed
【小題3】For the first two years in New York, the author _________.
A.often lost her way
B.did not think about her future
C.studied in three different schools
D.got on well with her stepfather
【小題4】What can we learn about the author from Paragraph 4?
A. She worked as a translator.
B. She attended a lot of job interviews
C. She paid telephone bills for her family
D She helped her family with her English.

查看答案和解析>>

科目:高中英語 來源: 題型:完型填空

A successful scientist is generally a good observer.  He makes full 36  of the facts he observes.  He doesn’t accept ideas which are not  37   on obvious facts,  and therefore refuses to accept authority as the only   38   for truth.  He always  39    ideas carefully and makes experiments to prove them.
The rise of    40    science may perhaps be considered to    41   as far back as the    42    of Roger Bacon,  the wonderful philosopher of Oxford,  who live    43    the years 1214 and 1292.  He was probably the first in the Middle    44    to suggest that we must learn science    45    observing and experimenting on the things around us,  and he himself    46   many important discoveries.
Galileo,  however,  who lived more than 300 years later (1564-1642),  was the greatest of several great men,     47    in Italy,  France,  Germany,  or England,  began by    48    to show how many important    49    could be discovered by observation.  Before Galileo,  learned men believed that large bodies fell more    50    towards the earth than small ones,     51    Aristotle said so.  But Galileo,  going to the    52     of the leaning Tower of Pisa,  let fall two  53    stones and proved Aristotle was wrong.  It was Galileo’s    54    of going direct to Nature,  and proving our    55    and theories by experiment,  that has led to all the discoveries of modern science.

【小題1】
A.useB.timeC.speedD.trust
【小題2】
A.workedB.basedC.livedD.written
【小題3】
A.reasonB.causeC.a(chǎn)dviceD.result
【小題4】
A.thinksB.checksC.hasD.learn
【小題5】
A.naturalB.physicalC.a(chǎn)ncientD.modern
【小題6】
A.dateB.keepC.lookD.take
【小題7】
A.studyB.timeC.yearD.birth
【小題8】
A.bothB.eachC.betweenD.a(chǎn)mong
【小題9】
A.SchoolsB.AgesC.DaysD.Count
【小題10】
A.inB.withC.onD.by
【小題11】
A.didB.madeC.tookD.gave
【小題12】
A.whoB.whenC.thatD.where
【小題13】
A.waysB.degreesC.levelsD.chance
【小題14】
A.truthsB.problemsC.peopleD.subjects
【小題15】
A.slowlyB.rapidlyC.lightlyD.heavily
【小題16】
A.a(chǎn)lthoughB.becauseC.whenD.If
【小題17】
A.placeB.footC.topD.ceiling
【小題18】
A.bigB.smallC.equalD.unequal
【小題19】
A.spiritB.skillC.theoryD.discovery
【小題20】
A.plansB.opinions C.worldD.a(chǎn)bility

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

It is widely known that any English conversation begins with The Weather. Such a fixation with the weather finds expression in Dr.Johnson’s famous comment that “When two English meet, their first talk is of weather.” Though Johnson’s observation is as accurate now as it was over two hundred years ago, most commentators fail to come up with a convincing explanation for this English weather-speak.
Bill Bryson, for ezample, concludes that,as the English weather is not at all exciting,the obsession with it can hardly be understood. He argues that”To an outsider,the most striking thing about the English weather is that there is not very much of it.” Simply, the reason is that the unusual and unpredictable weather is almost unknown in the British Isles.
Jeremy Paxman, however, disagrees with Bryson, arguing that the English weather is by nature attractive. Bryson is wrong, he says,because the English preference for the weather has nothing to do with the natural phenomena.”The interest is less in the phenomena themselves, but in uncertainty.” According to him, the weather in England is very changeable and uncertain and it attracts the English as well as the outsider.
Bryson and Paxman stand for common misconceptions about the weather-speak among the English. Both commentators, somehow, are missing the point. The English weather conversation is not really about the weather at all. English weather-speak is a system of signs ,which is developed to help the speakers overcome the natural reserve and actually talk to each other. Everyone knows conversations starting with weather-speak are not requests for weather data. Rather, they are routine greetings,conversation starters or the blank”fillers”, In other words, English weather-speak is a means of social bonding.
【小題1】The author mentions Dr.Johnson’s comment to show that________.

A.most commentators agree with Dr.Johnson
B.Dr.Johnson is famous for his weather observation
C.the comment was accurate two hundred years ago
D.English conversations usually start with the weather
【小題2】What doe s the underlined word”obsession” most probably refer to?
A.A social trend.B.An emotional state.
C.A historical concept.D.An unknown phenomenon.
【小題3】According to the passage,Jeremy Paxman believes that________.
A.Bill Bryson has little knowledge of the weather
B.there is nothing special about the English weather
C.the English weather attracts people to the British Isles
D.English people talk about the weather for its unccrtainty
【小題4】What is the author’s main purpose of writing the passage?
A.To explain what English weather-speak is about.
B.To analyse misconceptions about the English weather.
C.To find fault with both Bill Bryson and Jeremy Paxman.
D.To convince people that the English weather is changeable.

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

Google is testing its newest high-tech device, Google Glass. Most of the technologies for Google Glass are already available on smart phones. Google has taken those same technologies and added them to eyeglass frames(眼鏡架). The company describes the glasses as wearable computers that would change the way people view others and the world.
"Google Glass is a tiny computer that sits in a lightweight frame, and rests neatly above your eye and it makes exploring and sharing the world around you a lot easier,” said Chris Dale, the Senior Manager of Communications for Google Glass.
The glasses have a tiny video screen and a camera that connect wirelessly to the Internet through WIFI, a smartphone, or a tablet computer. You can make and receive calls, send and receive texts, take pictures, record video or search the web. You control Google Glass using your voice, and a touchpad on the right arm of the frame.
Professor Marcia Dawkins is among a select group of people who have been given a chance to test out Google Glass. "I thought this is something I definitely need for my classroom and hopefully for my personal life too."
The Professor's Google Glass looks like a pair bright orange glasses, without the actual glass. But there's a tiny rectangular(長方形的)glass at the top right-hand corner. Through that glass, she has been recording video while biking. She also has been able to talk to her sister in Thailand, and she plans to use the device to teach a public speaking class.
But not everyone is excited about Google Glass. Some are concerned about possible risks to privacy.
John Simpson is the director of the privacy project at Consumer Watchdog.
"It is going to allow people to come in and spy on you and record that, without you knowing what is going on."
Filmmaker Chris Barrett showed just how easy it is to record people without them knowing it. His glass captured(捕捉)a man getting arrested after a fight. He shared the video on You Tube.
Also some are concerned about the use of facial recognition(面部識別)technology on Google Glass. But Google says it will not approve the use of such applications. The Internet company says it is still testing its new device, and it hopes to make Google Glass available to the public by early next year.
【小題1】The technologies Google has made use of for Google Glass are______.

A.completely new
B.mostly already in use for smartphones
C.high-tech but out-of-date
D.a(chǎn)ll old
【小題2】Which of the following is not true about Google Glass?
A.It’s a very small computer.
B.It’s very light in weight.
C.Everyone can buy it now.
D.It can be used for teaching by school teachers.
【小題3】While cycling, the Professor has used the Glass to ______.
A.record video and chat B.send emails
C.teach a class D.spy on others
【小題4】What can be inferred from the passage?
A.Google has done what it can to protect people’s privacy.
B.Google Glass may be used for bad purposes.
C.Most people feel worried about the use of the Glass.
D.Google Glass is more useful than smartphones.

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

The size and location of the world’s deserts are always changing. Over millions of years, as climates change and mountains rise, new dry and wet areas appear. But within the last hundred years deserts have been increasing after frightful speed. This is partly because of natural changes, but most responsible for creating deserts are men.
Man can make deserts, but they can also prevent them from getting bigger. Algeria is planning a green belt of trees along the edge of the Sahara Desert to stop the sand. In China, too, windbreaks are being built in the northwest to keep the desert from growing.
But desert still threaten the world. Experts believe that land that is on the way to becoming deserts equals the size of Australia, Russia and US put together. Can we stop the spread of the world’s deserts and save the land that is so essential to mankind? Yes, we can, And we must.
【小題1】The reason for the land that turns into deserts is mostly because of _______

A.the changing of the climatesB.man
C.the natural changesD.the wind
【小題2】The word “windbreak” means _______
A.trees planted as a belt to stop the wind
B.high walls as a belt to stop the wind
C.long and deep ditch as a belt to stop the wind
D.men stood side by side as a belt to stop the wind
【小題3】 The deserts still threaten the world in the way ______
A.of increasing at an unbelievable speed
B.of spreading in Australia , Russia, and the US
C.of appearing new dry and wet areas in every part of the world
D.that they cause the changes of the climates
【小題4】Which of the following do you think is the best method?____
A.People move away from the land that is on the way to become deserts
B.To build great walls to stop the wind and sand
C.To plant trees and grass on the surface of the land
D.To irrigate the desert

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

Recordings of angry bees are enough to send big, tough African elephants running away, a new study says. Beehives (蜂窩)-either recorded or real-may even prevent elephants from damaging farmer's crops.
In 2002, scientist Lucy King and her team found that elephants avoid certain trees with bees living in them. Today,  Lucy wants to see if African honeybees might discourage elephants from eating crops. But before she asked farmer to go to the trouble of setting up beehives on their farms, she needed to find out if the bees would scare elephants away.
Lucy found a wild beehive inside a tree in northern Kenya and set up a recorder. Then she threw a stone into the beehive, which burst into life. Lucy and her assistant hid in their car until the angry bees had calmed down. Next,Lucy searched out elephant families in Samburu National Reserve in northern Kenya and put a speaker in a close to each family.
From a distance, Lucy switched on the pre-recorded sound of angry bees while at the same time recording the elephants with a video camera. Half the elephant groups left the area within ten seconds. Out of a total of 17 groups, only one group ignored the sound of the angry bees. Lucy reported that all the young elephants immediately ran to their mothers to hide under them. When Lucy Played the sound of a waterfall (瀑布) instead of the angry bees to many of the same elephant families, the animals were undisturbed. Even after four minutes, most of the groups stayed in one place.
Lucy is now studying whether the elephants will continue to avoid the sound of angry bees after hearing it several times. She hasn't tested enough groups yet to know, but her initial (最初的) results were promising enough to begin trials with farmers. She has now begun placing speakers in the fields to see if elephants are frightened away.
【小題1】We know from the passage that elephants may be frightened of         .

A.loud noises B.some crops 
C.video cameras D.a(chǎn)ngry bees 
【小題2】As mentioned in the passage, Lucy
A.works by herself in Africa 
B.needs to test more elephant groups 
C.has stopped elephants eating crops 
D.has got farmers to set up beehives on their farms 
【小題3】Why did Lucy throw a stone into a wild beehive?
A.To record the sound of bees. 
B.To make a video of elephants. 
C.To see if elephants would run away. 
D.To find out more about the behavior of bees. 
【小題4】Which of the following is true according to the passage?
A.Young elephants ignore African honeybees. 
B.Waterfalls can make elephants stay in one place. 
C.Elephants do not go near trees with bees living in them.  
D.Farmers do not allow Lucy to conduct tests in their fields. 

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

查看答案和解析>>

同步練習(xí)冊答案