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共用题干
Traffic Jams-No End in Sight
1 Traffic congestion（拥堵）affects people throughout the world.Traffic jams cause smog in dozens of cities across both the developed and developing world.In the U.S.,commuters（通勤人员）spend an average of a full working week each year sitting in traffic jams,according to the Texas Transportation Institute.While alternative ways of getting around are available,most people still choose their cars because they are looking for convenience,comfort and prhacy.
2 The most promising technique for reducing city traffic is called congestion pricing,whereby cities charge a toll to enter certain parts of town at certain times of day.In theory,if the toll is high enough,some drivers will cancel their trips or go by bus or train.And in practice it seems to work:Singapore,London and Stockholm have reduced traffic and pollution in city centers thanks to congestion pricing.
3 Another way to reduce rush-hour traffic is for employers to implement flexitime,which lets employees travel to and from work at off-peak traffic times to avoid the rush hour.Those who have to travel during busy times can do their part by sharing cars.Employers can also allow more staff to telecommute(work from home)so as to keep more cars off the road altogether.
4 Some urban planners still believe that the best way to ease traffic congestion is to build more roads, especially roads that can take drivers around or over crowded city streets.But such techniques do not really keep cars off the road;they only accommodate more of them.
5 Other,more forward-thinking,planners know that more and more drivers and cars are taking to the roads every day,and they are unwilling to encourage more private automobiles when public transport is so much better both for people and the environment.For this reason,the American government has decided to spend some $7 billion on helping to increase capacity on public-transport systems and upgrade them with more efficient technologies.But environmentalists complain that such funding is tiny compared with the $50 billion being spent on roads and bridges.

Building more roads is not an effective way to______.
A:reduce traffic jams
B:spend more money
C:drive around
D:travel regularly
E:go by bus
F:encourage more private cars

参考答案

参考解析
解析：第一段前两句都表明，交通拥堵影响着全世界人民。紧接着以美国为例，对此进一步进行解释。由此可知，本段主要讲述的是交通拥堵这个全球性的难题。
第二段首句提到了对在特定时间进人特定区域的车辆征收费用这种控制交通量的方法、紧接着从理论上和实践上对此方法进行了说明。由此可知，本段主要讨论的就是征收通行费这种减少交通拥堵的方法。
第三段开头就提到了另一个减少交通高峰期的交通量的方法，即安排灵活的上班时间，以便雇员避开交通高峰期。随后又对此进一步进行了解释。由此可知，第三段主要讲的就是改变工作惯例这种方法。
第四段提到，部分城市规划者认为应该建造更多的公路，以便缓解交通拥堵，不过这种方法并不会减少交通量。由此可知，本段主要讲的就是这种并不能解决问题的解决方法。
根据第一段最后一句“While alternative ways of getting around are available , most people still choose their cars because they are looking for convenience , comfort and privacy.”可知，大多数人认为开车出行比较方便。
根据第二段第二句“In theory ; if the toll is high enough,some drivers will cancel their trips or go by bus or train.”可知，本题答案为E。
根据第四段第一句“…the best way to ease traffic congestion is to build more roads …”可知，建造更多公路是为了减少交通堵塞，尽管这并不能减少交通量。由此可知，答案为A0
根据第五段第二句“For this reason , the American government has decided to spend some $7 billion on helping to increase capacity on public-transport systems and upgrade them with more efficient technolgies.”可知，美国政府决定增加资金投人来升级公共交通系统。由此可知，答案为B。
更多 “共用题干 Traffic Jams-No End in Sight1 Traffic congestion（拥堵）affects people throughout the world.Traffic jams cause smog in dozens of cities across both the developed and developing world.In the U.S.,commuters（通勤人员）spend an average of a full working week each year sitting in traffic jams,according to the Texas Transportation Institute.While alternative ways of getting around are available,most people still choose their cars because they are looking for convenience,comfort and prhacy.2 The most promising technique for reducing city traffic is called congestion pricing,whereby cities charge a toll to enter certain parts of town at certain times of day.In theory,if the toll is high enough,some drivers will cancel their trips or go by bus or train.And in practice it seems to work:Singapore,London and Stockholm have reduced traffic and pollution in city centers thanks to congestion pricing.3 Another way to reduce rush-hour traffic is for employers to implement flexitime,which lets employees travel to and from work at off-peak traffic times to avoid the rush hour.Those who have to travel during busy times can do their part by sharing cars.Employers can also allow more staff to telecommute(work from home)so as to keep more cars off the road altogether.4 Some urban planners still believe that the best way to ease traffic congestion is to build more roads, especially roads that can take drivers around or over crowded city streets.But such techniques do not really keep cars off the road;they only accommodate more of them.5 Other,more forward-thinking,planners know that more and more drivers and cars are taking to the roads every day,and they are unwilling to encourage more private automobiles when public transport is so much better both for people and the environment.For this reason,the American government has decided to spend some $7 billion on helping to increase capacity on public-transport systems and upgrade them with more efficient technologies.But environmentalists complain that such funding is tiny compared with the $50 billion being spent on roads and bridges.Building more roads is not an effective way to______.A:reduce traffic jamsB:spend more moneyC:drive aroundD:travel regularlyE:go by busF:encourage more private cars” 相关考题
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考题 共用题干 Traffic Jams-No End in Sight1 Traffic congestion（拥堵）affects people throughout the world.Traffic jams cause smog in dozens of cities across both the developed and developing world.In the U.S.,commuters（通勤人员）spend an average of a full working week each year sitting in traffic jams,according to the Texas Transportation Institute.While alternative ways of getting around are available,most people still choose their cars because they are looking for convenience,comfort and prhacy.2 The most promising technique for reducing city traffic is called congestion pricing,whereby cities charge a toll to enter certain parts of town at certain times of day.In theory,if the toll is high enough,some drivers will cancel their trips or go by bus or train.And in practice it seems to work:Singapore,London and Stockholm have reduced traffic and pollution in city centers thanks to congestion pricing.3 Another way to reduce rush-hour traffic is for employers to implement flexitime,which lets employees travel to and from work at off-peak traffic times to avoid the rush hour.Those who have to travel during busy times can do their part by sharing cars.Employers can also allow more staff to telecommute(work from home)so as to keep more cars off the road altogether.4 Some urban planners still believe that the best way to ease traffic congestion is to build more roads, especially roads that can take drivers around or over crowded city streets.But such techniques do not really keep cars off the road;they only accommodate more of them.5 Other,more forward-thinking,planners know that more and more drivers and cars are taking to the roads every day,and they are unwilling to encourage more private automobiles when public transport is so much better both for people and the environment.For this reason,the American government has decided to spend some $7 billion on helping to increase capacity on public-transport systems and upgrade them with more efficient technologies.But environmentalists complain that such funding is tiny compared with the $50 billion being spent on roads and bridges.Paragraph 3______A:Paying to Get inB:A Solution Which Is No SolutionC:Changing Work PracticeD:Closing City Centers to TrafficE:Not Doing EnoughF:A Global Problem
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考题 Which two characteristics are common between traffic policing and traffic shaping？（）A、 The rate of traffic is measured and compared to a configured policy.B、 Classification is used to differentiate traffic.C、 Traffic is marked and sent out according to priority.D、 Both can be applied to inbound and outbound traffic.E、 Both buffer traffic to ensure a predetermined traffic rate.F、 Both drop traffic that is above a predetermined traffic rate.
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考题 For defining the QoS policies for each traffic class， which parameters should be identified？（）A、minimum bandwidth guaranteeB、average bandwidth guaranteeC、optimum bandwidth guaranteeD、maximum bandwidth rateE、IP precedenceF、priority
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考题 Which of the following can lead to the contribution of LAN traffic congestion?（）A、Too many hosts in a broadcast domainB、Full duplex operationC、Broadcast stormsD、MulticastingE、SegmentationF、Low bandwidth
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考题 What statement about Transit AS is true？（）A、Traffic and prefixes originating from Source AS are carried across a Transit AS to reach theirdestination ASB、Traffic and prefixes originating from Transit AS are carried across a Stub AS to their destination ASC、Traffic and prefixes originating from Transit AS are carried across a Stub AS to their Source ASD、None of the above
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考题 Which statement describes exception traffic?（）A、Exception traffic must be sent to the PFE for processing.B、Exception traffic enters one ingress port and is sent out multiple egress ports.C、Exception traffic is rate-limited on the internal link to prevent DoS attacks.D、Exception traffic is processed after forwarding traffic when congestion exists.
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考题 问答题Directions:In this section, there is one passage followed by a summary. Read the passage carefully and complete the summary below by choosing no more than three words from the passage. Remember to write the answers on the Answer Sheet.　　Questions 1-5 are based on the following passage.The City of the Future　　What will city life be like in the future? Some people think that life in the cities is going to be horrible. They predict that cities will become more and more crowded. As the number of people increases, there will be less space for each person. This overcrowding will cause other problems—more crime, dirtier streets, and worse problems with traffic than we have now. How will people find enough drinking water, energy (such as gas and electricity), and housing? Because life will be hard, people who live in cities will worry more, and they may become sick. For these reasons, some say that nobody will want to live in urban areas.　　How can we solve such problems as overcrowding, crime, and traffic? In some cities, thousands of people are already sleeping in the streets because there is so little suitable housing—and because rents are so high. The crime rate isn’t going down. Instead, it is increasing so fast that many people are afraid to go out at night. Traffic is also getting worse. More and more often, traffic jams are so bad that cars don’t move at all for several blocks. These urban problems have been getting worse, not better, so many people see no hope for the future of the city.　　Los Angeles, California, for instance, has no subway system and the buses are slow. Instead, most commuters drive many miles from their homes to work. Many of these drivers spend several hours each day on busy freeways. New York, by contrast, has a mass transit system—buses, commuter trains, and subways. Because the public transportation is crowded and dirty, however, many people drive private cars, and the traffic jams are worse than in Los Angeles.　　On the other hand, some cities have clean, fast, and pleasant public transportation systems. In Paris, France, and Toronto, Canada, for example, anyone can use mass transit to move quickly from one part of the city to another.　　The disadvantages of any modern city are not unique to that city—that is, cities all over the world have to solve the problems of traffic jams, crime, housing, energy, drinking water, and overcrowding. Yet many cities have found answers to one or more of these difficulties. Some European cities, such as Stockholm, Sweden, or London, England, have planned communities that provide people with apartments, jobs, shopping centers, green space, entertainment, and transportation. Many U.S. cities are rebuilding their downtown areas. Urban planners can learn from one another. They can try solutions that have been successful in other parts of the world.　　Summary:　　Some people think that life in the cities is going to be horrible. They say that cities will become more and more crowded and many other problems will be caused by this 　1　Due to the hard life, people do not want to live in 　2　These urban problems such as overcrowding, crime and traffic have been getting worse, so many people 　3　for the future of the city. However, these disadvantages of any modern city are not unique to that city. All the cities all over the world must solve the problems and fortunately, many of them have found answers to one or more of these difficulties. For example, 　4　or London has planned communities providing people with apartments, jobs and so on. Besides, many U. S. cities 　5　In a word, solutions that have been successful in a place should be adopted and tried in another place.
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考题 单选题What is the appropriate title for the passage?A Smart Highway Projects—The Ultimate Solution to Traffic Congestion.B A Quick Fix Solution for the Traffic Problems.C A Venture to Remedy Traffic Woes.D Highways Get Smart—Part of the Package to Relieve Traffic Gridlock.
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考题 单选题The lengthening of a crack formed in the shell plating of a ship may be prevented by （）.A welding brackets across both ends of the crackB chipping out and slot welding the entire crackC drilling a hole at each end of the crackD cutting a square notch at each end of the crack
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考题 单选题The sentence “Traffic accidents decline millions of lives” means” ______.A Traffic accidents make some people become millionairesB Many people die from traffic accidentsC Millions of people say they themselves have had traffic accidentsD Millions of people remain healthy after traffic accidents
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考题 单选题Assuming both paths shown in the exhibit are available, which statement is correct?（）A Traffic matching the default route will use 10.1.1.1 as the next hop.B Traffic matching the default route will use 10.1.1.254 as the next hop.C Traffic matching the default route will be load-balanced per packet across both next hops.D Traffic matching the default route will be load-balanced per flow across both next hops.
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