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Chokwe Selassie is on a mission to help drivers avoid potholes( 路面坑洼). The eighth-grader was inspired to kick off his mission on a recent morning, when his mother was driving him to school. Their car was damaged as it went over a huge pothole in the middle of the street in their hometown of Jackson, Mississippi. "I decided I was going to do something about the pothole prob-lem in my city," Chokwe says. His solution: an app(手機(jī)應(yīng)用) that warns drivers when there is a pothole ahead.

Chokwe developed the app with his friends Rodriguez Ratliff and Emmanuel Brooks. "When the app detects a potheole, it is highlighted(突出顯示) in red," Chokwe says. "And if you get close to the pothole, your phone will warn you. " Drivers can also use the app to report any pot-holes" they encounter, and to look for other routes they can take to avoid roads that have them.

The app relies on Current available information about the streets of Jackson. "It works by u-sing the city' s 311 call system, so it uses information already stored in a database," Chokwe says.

(79) Through the call system, citizens dial 3-1-1 to report non-emergency problems--whiCh in-clude potholes. Chokwe and his friends determined that focusing on the 10 busiest streets in Jack-son would give them a large enough sample size to test the prototype(原型).

(80) Although the app isn' t yet available for sale, Chokwe is already looking for ways to im-prove it. The prototype remains limited'to 10 streets in Jackson, but he hopes to add more, so that it includes every street in the city. And then he wants to go even farther. "I want to keep working on the app until it' s nationwide," Chokwe says.

第11題 Which of the following is the best title for the passage?

A.A Solution to Traffic Jams　　B.An App to Detect Potholes　　C.Pothole Problems in Big Cities　　D.Poor Road Conditions

答案：B

第12題 The phrase kick off in Paragraph 1 is closest in meaning to__________.

A.leave　　B.invent　　C.begin　　D.shift

答案：C

第13題 People use the 311 call system to report__________.

A.emergencies　　B.terrorist attacks　　C.non-emergencies　　D.child abuse

答案：C

第14題 The prototype focuses on __________ streets in Jackson.

A.10　　B.15　　C.20　　D.25

答案：A

第15題 According to the passage, which of the following statements is TRUE?

A.Chokwe developed the app all by himself.　　B.People can buy this app from the online store.　　C.His mother' s car was once damaged over a pothole.　　D.The app works by using the city's 911 call system.

答案：C

Vocabulary and Structure Directions: In this part there are 30 incomplete sentences. For each sentence there are fourchoices marked A, B, C and D. Choose the ONE answer that best completes the sentence. Then blacken the corresponding letter on the Answer Sheet.

第16題 "Can your brother and sister understand the English teacher?" "No, of them can. "

A.not either　　B.not one　　C.neither　　D.no one

答案：C

第17題 Someday in the future they are bound to __________ for the crimes they have committed today.

A.pay　　B.cost　　C.catch　　D.spend

答案：A

第18題 A true friend is one who offers you a helping hand when you are__________.

A.in order　　B.in public　　C.in time　　D.in trouble

答案：D

第19題 Young boys and girls stood on __________ sides of the street to welcome the president from Africa.

A.every　　B.each　　C.both　　D.all

答案：C

第20題 Last night a big fire __________ in the suburbs of the town, causing huge losses to the area.

A.broke down　　B.came down　　C.broke out　　D.came out

答案：C

第21題 Customer:Waiter, a table for two, please.

Waiter:Yes, sir. There' s one but it' s close to the door.

Customer: __________ We' 11 take it.

A.Excuse me　　B.Not at all　　C.Well, it doesn't matter　　D.Not really

答案：C

第22題 A child' s first five years is important as far as learning is__________.

A.touched　　B.worried　　C.concerned　　D.affected

答案：C

第23題 The man fell in love with her at first__________.

A.scene　　B.sight　　C.look　　D.sign

答案：B

第24題 The key __________ success is hard work and persistence.

A.on　　B.to　　C.for　　D.of

答案：B

第25題 We are all very grateful __________ you for your help.

A.on　　B.from　　C.with　　D.to

答案：D

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