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  3. Traffic statistics paint a gloomy picture. To help solve their traffic woes, some rapidly growing U. S. cities have simply built

Traffic statistics paint a gloomy picture. To help solve their traffic woes, some rapidly growing U. S. cities have simply built

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问题     Traffic statistics paint a gloomy picture. To help solve their traffic woes, some rapidly growing U. S. cities have simply built more roads. But traffic experts say building more roads is a quick-fix solution that will not alleviated the traffic problem in the long run. Soaring land costs, increasing concern over social and environmental disruptions caused by road-building, and the likelihood that more roads can only lead to more cars and traffic are powerful factors bearing down on a 1950s-style construction program.
    The goal of smart-highway technology is to make traffic systems work at optimum efficiency by treating the road and the vehicles traveling on them as an integral transportation system. Proponents of the advanced technology say electronic detection systems, closed-circuit television, radio communication, ramp metering, variable message signing, and other smart-highway technology can now be used at a reasonable cost to improve communication between drivers and the people who monitor traffic.
    Pathfinder, a Santa Monica, California-based smart-highway project in which a 14-mile stretch of the Santa Monica Freeway, making up what is called a "smart corridor", is being instrumented with buried loops in the pavement. Closed-circuit television cameras survey the flow of traffic, while communication linked to property equipped automobiles advise motorists of the least congested routes or detours. Not all traffic experts, however, look to smart-highway technology as the ultimate solution to traffic gridlock. Some say the high-tech approach is limited and can only offer temporary solutions to a serious problem.
    "Electronics on the highway addresses just one aspect of the problem: how to regulate traffic more efficiently,"explains Michael Renner, senior researcher at the world-watch Institute. It doesn’t deal with the central problem of too many cars for roads that can’ t be built fast enough. It sends people the wrong message. They start thinking "Yes, there used to be a traffic congestion problem, but that’s been solved now because we have, advanced high-tech system in place."Larson agrees and adds, "Smart highways is just one of the tools that we use to deal with our traffic problems. It’s not the solution itself, just pan of the package. There are different strategies."
    Other traffic problem-solving options being studied and experimented with include car pooling, rapid mass-transit systems, staggered or flexible work hours, and road pricing, a system whereby motorists pay a certain amount for the time they use a highway.     It seems that we need a new, major thrust to deal with the traffic problems of the next 20 years. There has to be a big change.
Which of the following best describes the organization of the whole passage?
选项 A、Two contrasting views of a problem are presented.
B、A problem is examined and complementary solutions are proposed or offered.
C、Latest developments are outlined in order of importance.
D、An innovation is explained with its importance emphasized.
答案B
解析 本题中，A、C、D三项都与文章的意思不符。本文首先提出了交通堵塞问题，接着介绍了解决方法。中心就是介绍了“smart-highway”这种运用高科技的新方法，指出了其特点和目前的不足。接着谈到了人们正在研究和实验的其他解决方法。B项中的“a problem”是指“smart-highway”，本文主要讲了解决交通问题其中的一个方法，同时又指出了其他的一些方法。因此B项为正确答案。
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