题目内容

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

2._________(tell) many times, he still repeated the same mistakes.

3._________ (complete) the program, they have to stay here for another two weeks.

4.Much to our surprise, the two girls are still sitting on the ground, _________ (absorb) in talking.

5._________ (remind) not to miss the flight at 15:20, the manager set out for the airport in a hurry.

6._________ (not finish) the homework, the little girl doesn’t dare to go to school.

7._________ (see) from the space, the earth, with water_________ (cover) seventy percent of its surface, looks like a blue ball.

8.Lily’s mobile phone was left in a taxi accidentally, never_________ (see) again.

9.The students are advised _________ (take) more exercises.

10.She caught the student _________ (pick) flowers _________ (smell) sweet in the garden.

11._________ (judge) from his _________ (excite) news, his friends have found the key to __________ (solve) the problem.

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Inside the Rain Room

The Rain Room has arrived and local art lovers are taking notice. Is it worth the wait? Yes, I assure you it is. Once inside, visitors find a long, dark room with a high ceiling. A single bright light shines through heavy rain falling around visitors. The mist. The damp air. The noise. It feels like a mighty storm is pouring down. But the storm is inside. And visitors aren’t getting wet. Instead, visitors wander in awe, admiring the rain and the artists who created it.

The Rain Room was created to highlight the connection between humans, nature and technology. With a tracking system that senses movement and stops the rain wherever visitors move, it does just that. Light and sound produce an experience that feels both natural and foreign. The exhibit is moving on to Atlanta next month. I urge you to visit before then. It’s time to experience the Rain Room for yourself!

Welcome to the Rain Room

The Rain Room features falling water. Please be aware you may get slightly wet. However, visitors wearing raincoat will be turned away.

This exhibit features advanced technology. To ensure its effectiveness, please avoid wearing dark or reflective clothing.

Visitors are welcome to take photographs of the exhibit.

Children must be accompanied by an adult.

For the convenience of all guests, visits are limited to 10minutes.

1.What’s the purpose of the text?

A. To attract visitors to a new art exhibit.

B. To explain how an exhibit has been created.

C. To describe the technology used in the exhibit.

D. To promise the artists taking part in an exhibit.

2.What’s the function of the exhibit’s tracking system?

A. To keep visitors from getting wet.

B. To protect the exhibit from water damage.

C. To time how long visitors are in the room.

D. To count the number of visitors in the room.

3.What must you do when visiting the Rain Room?

A. Wear a raincoat

B. Wear dark clothing

C. Leave your camera outside.

D. Pass through within 10 minutes.

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 (光学的), acoustic (声学的) 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 (精确性) 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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