A new smart phone system under development can locate you even when you’re inside a building, which GPS can't do. While the concept sounds powerful, it’s not yet clear how practical it might be.

The set-up, called SurroundSense, sends information from cameras and microphones—gear in the latest smart phones—to a server that produces a fingerprint of the location.

“You can’t tell much from any of the measurements individually, but when combined, the optical (光學(xué)的), acoustic (聲學(xué)的) and motion information creates a unique fingerprint of the space,” said Ionut Constandache, a student in computer science.

The system distinguishes between two indoor spaces in this manner: It knows that a bar is likely to be dark and noisy and people move little, sit a lot, whereas a department store will be brightly lit, contain vibrant colors, and will see a lot of people moving up and down passages. The more the system is used, the more it learns about specific places.

More work is needed before the set-up would be ready for prime time, however. For now, it can’t work if a person’s cellphone is in a handbag or otherwise unable to employ the camera. Finally it would be best served if paired with phones that were worn on the wrist or hung around the neck. Batteries, too, are a problem.

Students on the research team went out across Durham, North Carolina, with their cellphones collecting data in different types of businesses. The students mirrored the actions of the selected customers so that they would not prejudice the measurements.

“We went to 51 different stores and found that SurroundSense achieved an average accuracy (精確性) of about 87 percent," Constandache said.

“As the system collects and analyzes more and more information about a particular site, the fingerprint becomes more precise,” said Romit Roy Choudhury, professor of computer engineering. “Not only is the ambience different at different locations, but also can be different at different time at the same location.”

1.We can infer from the first paragraph that GPS .

A. can find you wherever you are

B. can make too much loud noise

C. can only find outside things

D. isn’t really practical yet

2.Why did students mirror the actions of the selected customers?

A. To get a reasonable result.

B. To collect data in different ways.

C. To receive information about a particular site.

D. To learn more about specific places.

3.The underlined word “ambience” in the last paragraph may mean .

A. the fingerprint of the location

B. the character of a place

C. the existence of people

D. the area of store

4.The main idea of the passage is about .

A. comparing GPS with a smart cellphone

B. the development of cellphones

C. a cellphone knowing where you are

D. what kind of future cellphones face

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1.The house _________ (build) now are for the teachers.

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科目：高中英語 來源：福建省莆田市2018屆高三第一次月考英語試卷 題型：短文改錯

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增加：在缺詞處加一個漏字符號(Λ)，并在其下面寫出該加的詞。

刪除：把多余的詞用斜線(\)劃掉。

修改：在錯的詞下劃一橫線，并在該詞下面寫出修改后的詞。

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Ladies and gentlemen, today I’m going to share something amazed about dolphins. For ages, the sailors have said that it is good luck to see dolphins swimming alongside boats. Their presence meant that land is near, which will be vital informations if a boat and its crew are in danger. Some dolphins have even protected sailors which suffer shipwreck from sharks. There is no wonder that these unique and fascinating creatures have long known as our friends.

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Two 5-year-old girls, best friends, held hands in Tolson’s office at Van Ness Elementary School in Washington, D.C., one saying she didn’t feel well. Tolson, the school nurse, asked, “How long has your stomach been hurting?” “It just started,” she said.

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The only time everyone pays attention is when there’s a tragedy(悲劇), like a school shooting. However, we actually can catch the students who might harm others and recognize the students who might want to kill themselves.

Mental health is ranked one of the top problems all school nurses deal with, and school nurses need to be better at it.

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B. To show the importance of school nurses.

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C. To learn what mental problems students may have.

D. To improve her skills of dealing with mental health.

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A. There are too many kids in need of help.

B. Something tragic often happens at school.

C. Students’ mental health is always ignored.

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科目：高中英語 來源：2014-2015學(xué)年湖北武漢第二中學(xué)高二上期中英語試卷（解析版） 題型：完形填空

完形填空(共20小題；每小題1分，滿分20分)

If you ever feel as if you are being knocked about by life, think about the amazing bird called the Water Ouzel. I can’t imagine this waterbird knows what it is to have a day. The little creature is often found living next to waterfalls and rivers rushing fast. And however threatening the weather, however the water, in snow and rain, the tough and cheerful Water Ouzel can be chirping and singing. What's more, while the of most songbirds, however melodious in warm weather, fall over long winter months, the hearty Water Ouzel on through all seasons and every kind of . I have to wonder: does this little creature know anything I don't?

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As the incredible humanitarian novelist Harriet Beecher Stowe said, “ you get into a tight place and everything you till it seems as though you could not hold on a minute longer, never give up then, for that is just the place and time that the tide will .” I have had that more times than I can remember.

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1.A. dull B. long C. bad D. wonderful

2.A. violent B. distant C. calm D. slow

3.A. deep B. cold C. clear D. dirty

4.A. recorded B. kept C. taught D. heard

5.A. sizes B. colors C. voices D. shapes

6.A. silent B. sleepy C. ill D. deaf

7.A. lives B. sings C. survives D. flies

8.A. time B. river C. music D. storm

9.A. bird B. novelist C. man D. farmer

10.A. take place of B. get away from C. give way to D. catch up with

11.A. dawn B. dusk C. noon D. night

12.A. come B. last C. stay D. go

13.A. concerned B. cared C. complained D. puzzled

14.A. party B. story C. trouble D. day

15.A. when B. because C. although D. whether

16.A. takes in B. goes against C. gets over D. cuts off

17.A. end B. go C. rise D. turn

18.A. experience B. memory C. idea D. sight

19.A. beside B. on C. in D. with

20.A. take up B. hold on C. put off D. bring in

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I remain that a peaceful settlement of the dispute can be achieved.

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Bonnie's Miracle

My sister Bonnie and her husband Bob owned their own flower shop.But flowers were becoming____at more and more local stores and through the Internet.____their business was not as good as it had been three years earlier when they____it.For about a year,Bonnie and Bob discussed____they should do.They debated selling.They talked about____it into a gift shop or maybe a bookstore.But there just wasn't enough____or people around the area to ____the business.

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Soon the phone rang.A young woman was asking how much they wanted for the____."My husband and I never take the road beside____shop,"she said,"but we were driving by yesterday and saw the 'For Sale' sign in the____."

Puzzled,Bonnie replied,"There isn't a sign in the window.My husband and I have been discussing whether or not we should sell,but haven't reached a____.""But I saw the sign!"the young lady____insisted."My husband saw it too.It was blue and white in the____picture window____the road.

It____that the sign was the reflection（反射）of a house's poster put up____to the window on the other side of the road.Anyhow,within two weeks,the young lady and her husband____the flower shop at a handsome price.

1.A. available B. free C. beautiful D. expensive

2.A. However B. Thus C. Still D. Even

3.A. enjoyed B. saw C. started D. met

4.A. how B. whether C. when D. what

5.A. destroying B. changing C. opening D. shutting

6.A. cars B. goods C. traffic D. communication

7.A. stop B. prove C. compete D. support

8.A. sincerely B. sadly C. happily D. quickly

9.A. asked B. answered C. prayed D. wrote

10.A. door B. shop C. book D. phone

11.A. business B. sign C. method D. work

12.A. their B. our C. my D. your

13.A. wall B. window C. ground D. roof

14.A. goal B. contract C. decision D. judgment

15.A. hardly B. firmly C. shyly D. bravely

16.A. large B. small C. dirty D. rough

17.A. standing B. checking C. facing D. touching

18.A. looked out B. took out C. brought out D. turned out

19.A. opposite B. next C. similar D. close

20.A. hired B. bought C. raised D. discovered

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科目：高中英語 來源：河南省周口市2016-2017學(xué)年高一下學(xué)期期末考試英語試卷 題型：閱讀理解

Next fall when you see geese heading south for the winter or flying in “ V” formation (隊形), you might consider what science has discovered as to why they fly that way.

As each bird spreads its wings，it creates an uplift (上升力) for bird immediately following. By flying in “ V” formation the whole flock (鳥群) adds at least 71% greater flying range, than if each bird flies on its own. People who share a common direction arid sense of community can get where they are going more quickly and easily because they are traveling on the thrust (推動力) of one another.

When a goose falls out of the formation, it suddenly feels the drag and resistance of trying to go it alone and quickly gets back into formation to take advantage of the lifting power of the bird in front. If we have as much sense as a goose, we will stay in formation with those who are headed the same way we are. When the head goose gets tired, it flies backwards and another goose flies point. It is sensible to take turns doing demanding jobs, whether it is with people or with geese flying south.

Geese honk (雁叫) from behind to encourage those up front to keep up their speed. What do we say when we honk from behind?

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A. scientific discovery about geese.

B. the importance of flight formation.

C. the advantages of “V” formation.

D. the reasons for geese’s flight.

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A. be against. B. support.

C. sit by. D. obey.

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A. Teamwork. B. Sympathy.

C. Kindness. D. Intelligence.

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