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 problem in my city," Chokwe says. His solution: an app 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 pothole, it is highlighted(突出显示)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 potholes 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 using the city's 311 call system, soit uses information already stored in a database," Chokwe says. (79) Throughthe call system, citizens dial 3-1-1 to report non-emergency problems—which include potholes. Chokwe and his friends determined that focusing on the 10 busiest streets in Jackson 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 improve 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.

1. 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

答案解析：

Which of the following is the best title for the passage?(下面哪个选项是文章合适的标题?)

答案为B(an APP to detect potholes(检测路面有坑洼的APP))

答题思路：利用文章主题词直接判断答案。文章中有明显文章主题词：

APP(该词贯穿整篇文章出现)

2. The phrase kick off inParagraph 1 is closest in meaning to___.

A. leave B. invent C. begin D. shift

答案解析：

The phrase kick off in paragraph1is closest in meaning to ___.(段中的短语kick off在意义上与哪个选项的意义接近?)

答案为：C(开始)

文章中的相关句：Chokwe Selassie is on a mission to help drivers avoid potholes. The eighth-grader was inspired to kick off his mission on a recent morning, when his mother was driving him to school. (Chokwe Selassie正在完成一项帮助司机们避开路面坑洼的任务(介词on 在句中的意义为“正从事…(活动)”)。前不久的一个早晨他妈妈驾车送他去学校时，这个正在上八年纪的学生被(他妈妈)鼓励去…他的这个任务“，四个选项的意义分别为”离开，发明，开始，转变“，显然，”开始“在句中的意义合适，所以答案为”开始“。

3. People use the 311 call system to report____.

A. emergencies B. terrorist attacks

C. non-emergencies D. child abuse

答案解析：

People use the 311 call system to report ___.(人们使用311电话系统来报告…。)

答案为C(非紧急情况)

文章中的相关句：Through the call system, citizens dial 3-1-1 to report non-emergency problems – which include potholes. (通过这个电话系统，人们拨打311来报告非紧急问题—其中包括路面坑洼的问题))。

4. The prototype focuses on____streets in Jackson.

A. 10 B. 15 C. 20 D. 25

答案解析：

答案为A(10)

文章中的相关句：Chokwe and his friends determined that focusing on the 10 busiest streets in Jackson would give them a large enough sample size to test the prototype. (Chokwe和他的朋友们决定关注Jackson地区10条繁忙的街道将会给他们足够多的样本来对版APP进行测试)。

5. 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 thecity's 911 call system.

答案解析：

According to the passage, which of the following statements is TRUE?(依据文章内容来看，下面哪个选项陈述的意义正确?)

答案为C(他的妈妈的汽车曾经被路面坑洼损坏过)。

分析：其他选项均与文章内容不符合：Chokwe and his friends determined that focusing on the 10 busiest streets in Jackson would give them a large enough sample size to test the prototype.(Chokwe和他的朋友们决定关注Jackson地区10条繁忙的街道将会给他们足够多的样本来对版APP进行测试)。依据该句可以推断出：APP应该是Chokwe和他的朋友们共同研发的，因此A(APP完全是由Chokwe研发的)不正确;原文说“the app is not yet available for sale，…(这种app还没有上市销售)”，因此选项B(人们可以从网上商店上购买这个app)不正确;文章说“it works by using the city's 311 call system，…。(它(app)通过使用这个城市的311电话系统来工作)”，由此可知选项D(app通过使用这个城市的911电话系统来工作)与文章内容不符合，因此也不正确。

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