[题目]Controlling traffic is a complex and high cost problem in many developed countries. It becomes more difficult and costly with the ever- increasing number of cars on the roads. But scientists and s 题目和参考答案——青夏教育精英家教网—

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【题目】Controlling traffic is a complex and high cost problem in many developed countries. It becomes more difficult and costly with the ever- increasing number of cars on the roads. But scientists and students at the CATT, at the University of Maryland are working to solve this problem. They are using simulation(模拟) technologies to help government and private business control and react to changing traffic conditions.

The online economics magazine Forbes.com says traffic congestion(拥挤) cost Americans $ 124 billion in 2014 and that number could rise to $ 186 billion by 2030.

Bui scientists at the CATT lab are trying to reduce those costs. They are developing a system that helps traffic managers. planners, emergency workers and businesses plan and react better. Michael Pack is CATT director. He says the system is important to help emergency workers, or first responders，reach an accident area faster.

The CATT Lab collects information from many sources, including roadside devices, GPS (global positioning system) equipment and wireless phones.

About 60 students and 30 software developers observe traffic flow and manage the computer servers at all times. They also work to develop software and applications that can help traffic run smoother and safer, Some of them turn the information gathered into so-called "visualizations". These visual representations help emergency workers better understand what is happening.

The center shares its findings with firefighters, police，Transportation departments and the military. They also share information with universities and transportation company. The technology company Google uses the data for its traffic-related websites. Michael Pack says, the information is then shared with anyone who wants to help traffic run more smoothly.

Mr. Pack says the goal is to help develop an intelligent system of road signals that will communicate with each other and with vehicles on the road.

【1】The second paragraph is written to

A. attract more people to look through Forbes.com.

B. tell readers what Forbes.com says on its website

C. show how much money controlling costs America

D. prove it is very expensive for some developed countries to control traffic

【2】What benefit can emergency workers get from the system developed by the CATT lab?

A. They can be safer.

B. They can reach an accident area faster.

C. They can get more advice from people.

D. They can share their information with others.

【3】Which of the following is NOT true about the developers and the students at the CATT?

A. They observe traffic flow continuously.

B. They develop software and applications.

C. They control the computer servers occasionally.

D. They change the information gathered into visual image.

【4】1n which column of the newspaper can you read this text?

A. Daily life. B. Science. C. Education. D. Exploration.

【答案】

【1】D

【2】B

【3】C

【4】B

【解析】

试题分析：据世界卫生组织统计，每年数以百万计的人死于室内空气污染，其主要原因是质量不好的煤炉造成的污染。

【1】D 写作意图题。根据第一段Controlling traffic is a complex and high cost problem in many developed countries. 在许多发达国家，控制交通是一个复杂且成本高的问题，第二段以网上经济学杂志Forbes.com 为例，证明控制交通成本高。故选D项

【2】B细节理解题。根据第三段the system is important to help emergency workers, or first responders，reach an accident area faster.，该系统是很重要的，可以帮助救援人员或现场急救员，更快地到达事故现场。故选B项

【3】C推理判断题。根据第五段About 60 students and 30 software developers observe traffic flow and manage the computer servers at all times.约60名学生和30名软件开发人员一直观察流量和管理计算机服务器，可知C选项是错误的。故选C项

【4】B主旨大意题。根据第一段They are using simulation(模拟) technologies他们使用模拟

技术，可知与科学有关。故选B项。

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