共用题干 Traffic Jams一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 e
题目
共用题干
Traffic Jams一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 privacy.
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 centres 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.
Traffic Jams一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 privacy.
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 centres 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.
If charged high enough,some drivers may___________ to enter certain parts of town.
A:go by bus
B:encourage more private cars
C:drive around
D:spend more money
E:reduce traffic jams
F:travel regularly
A:go by bus
B:encourage more private cars
C:drive around
D:spend more money
E:reduce traffic jams
F:travel regularly
相似考题
更多“共用题干 Traffic Jams一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 e”相关问题
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第1题：
Years ago our cities were full of cars,buses and trucks．Now the streets are completely congested(拥挤的)and it is very difficult to drive a car along them．Drivers must stop at hundreds of traffic lights．What are our cities going to be like in ten or twenty years?Will enormous(巨大的)motorways be built across them?With-big motorways cutting across them,full of noisy,dirty cars and lorries,our cities are going to be awful places．How can we solve the problem?
There are some good ideas to reduce the use of private cars．In 1989,for example,the authorities in Rome began an interesting experiment:passengers on the city buses did not have to pay for their tickets.
In Stockholm there was another experiment:people paid very little for a season ticket to travel on any bus,trolley bus,train or tram in all the city.
In many cities now some streets are closed to vehicles,and pedestrians are safe there.
In London there is another experiment:part of the street is for buses only,so the buses can travel fast．There are no cars or taxies in front of them.
In many cities pedestrians are now much safer because__.A.no traffic is allowed on some streets
B.traffic is computer-controlled
C.cars move very slowly
D.only one way streets are open to traffic答案：A解析：参见第四段。单词close是“关闭”的意思。 -
第2题：
共用题干
Traffic Jams一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 Institu-
te.While alternative ways of getting around are available,most people still choose their cars because they are
looking for convenience,comfort and privacy.
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 centres 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 4_________
A:Not Doing Enough
B:A Global Problem
C:Changing Work Practice
D:A Solution Which Is no Solution
E:Paying to Get In
F:Closing City Centres to Traffic答案：D解析：由文章第一段主题句“Traffic congestion affects people throughout the world."，可知交通 拥堵是全球性问题。故选B。
文章第二段第一句是主题句，该段主要讲人们为了在交通拥堵时顺利通过，而不得不付费。故选E。
文章第三段主要讲解决交通拥堵的另一个方法，即灵活上下班时间。故选C。
文章第四段提到，城市规划者提出多修路可以解决交通拥堵的问题，但作者认为这一 方案不能减少汽车数量，其效果是相反的。故选D。
由文章第一段最后一句话，"most people still choose their cars because they are looking forconvenience , comfort and privacy.”可知，选C。
由文章第二段第二句话，"if the toll is high enough, some drivers will cancel their trips or go by bus or train.”可知，选A。
参考26题解析。
文章第五段倒数第二句话，"the American government has decided to spend some $7billion on helping to increase capacity on public transport systems and upgrade them with more effi-cient technologies.”可知，选D。 -
第3题：
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.TheU.S.government has planned to______updating public-transport systems.
A:reduce traffic jams
B:spend more money
C:drive around
D:travel regularly
E:go by bus
F:encourage more private cars答案：B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。 -
第4题：
共用题干
Traffic Jams一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 privacy.
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 centres 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 1________
A:Not Doing Enough
B:A Global Problem
C:Changing Work Practice
D:A Solution Which is No Solutior
E:Paying to Get In
F:Closing City Centres to Traffic答案：B解析：由文章第一段主题句“Traffic congestion affects people throughout the world.”可知，交通 拥堵是全球性问题。故选B。
文章第二段第一句是主题句，该段主要讲人们为了在交通拥堵时顺利通过，而不得不 付费。故选E。
文章第三段主要讲解决交通拥堵的另一个方法，即灵活上下班时间。故选C。
文章第四段提到，城市规划者提出多修路可以解决交通拥堵的问题，但作者认为这一方案不能减少汽车数量，其效果是相反的。故选D。
由文章第一段最后一句话，"most people still choose their cars because they are looking for convenience , comfort and privacy.”可知，选C。
由文章第二段第二句话，"if the toll is high enough, some drivers will cancel their trips or go by bus or train.”可知，选A。
参考26题解析。
由文章第五段倒数第二句话，"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.”可知，选D。第4部分：阅读理解第一篇 本文介绍了蜜獾好奇、多变、凶狠的性格及其广泛的捕食对象、大面积的狩猎范围和松散的 家庭群落等内容。 -
第5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.
正确答案:A,B -
第6题：
In the Junos OS, what handles transit traffic?（）
- A、Transit traffic is handled by the RE only
- B、Transit traffic is handled by the PFE only
- C、Transit traffic is handled by both the RE and the PFE
- D、Transit traffic is not handled by the RE or the PFE
正确答案:B -
第7题：
Which of the following can lead to the contribution of LAN traffic congestion?（）
- A、Too many hosts in a broadcast domain
- B、Full duplex operation
- C、Broadcast storms
- D、Multicasting
- E、Segmentation
- F、Low bandwidth
正确答案:A,C,D,F -
第8题：
Which of the following is the purpose of QoS?（）
- A、Load balance traffic across multiple LAN and WAN links.
- B、Increase speed of network traffic.
- C、Classify, mark, and prioritize traffic on WAN and LAN links
- D、Guarantee traffic delivery.
正确答案:C -
第9题：
单选题What is the author’s main concern?AHow to render automobiles pollution-free.
BHow to make smaller and safer automobiles.
CHow to solve the problem of traffic jams.
DHow to develop an automated subway system.
正确答案： A解析：
主旨题。本文是对未来汽车情况的一种展望，指出未来涉及汽车的主要问题还是交通拥挤的问题，解决办法是采用公路自动化系统，该自动化系统的关键问题是中央电脑的监控系统，这是文章的核心，是解决未来交通拥挤的关键。这一主旨与C项“怎样解决交通拥挤问题”属同义重述，故C为答案。 -
第10题：
单选题The passage is mainly about _____.Athe construction of parking spaces in Los Angeles
Bthe new growth pattern of the city of Los Angeles
Cthe public transportation system in Los Angeles
Dthe problem of traffic jams in Los Angeles
正确答案： B解析：
主旨大意题。题目中问“这篇文章主要讲了什么？”从文章的结构以及意思来看，作者主要介绍了洛杉矶这个城市不同的发展之路，以及它所带来的影响。正确答案为B。 -
第11题：
单选题What is the appropriate title for the passage?ASmart Highway Projects—The Ultimate Solution to Traffic Congestion.
BA Quick Fix Solution for the Traffic Problems.
CA Venture to Remedy Traffic Woes.
DHighways Get Smart—Part of the Package to Relieve Traffic Gridlock.
正确答案： D解析：
主旨题。本文主要围绕交通问题的解决展开论述，并提出建立smart-highway是个不错的办法，根据第三段提到的“Smart highways is just one of the tools that we use to deal with our traffic problems”，可知smart-highway只是“part of the package”，而不是最终解决之道。选项D符合文意。 -
第12题：
单选题The sentence “Traffic accidents decline millions of lives” means” ______.ATraffic accidents make some people become millionaires
BMany people die from traffic accidents
CMillions of people say they themselves have had traffic accidents
DMillions of people remain healthy after traffic accidents
正确答案： C解析：
词语释义题。实质考查decline的意思，文中表示“夺取，扼杀”。只有B项“交通事故造成许多人的死亡”符合原句意思。 -
第13题：
Years ago our cities were full of cars,buses and trucks．Now the streets are completely congested(拥挤的)and it is very difficult to drive a car along them．Drivers must stop at hundreds of traffic lights．What are our cities going to be like in ten or twenty years?Will enormous(巨大的)motorways be built across them?With-big motorways cutting across them,full of noisy,dirty cars and lorries,our cities are going to be awful places．How can we solve the problem?
There are some good ideas to reduce the use of private cars．In 1989,for example,the authorities in Rome began an interesting experiment:passengers on the city buses did not have to pay for their tickets.
In Stockholm there was another experiment:people paid very little for a season ticket to travel on any bus,trolley bus,train or tram in all the city.
In many cities now some streets are closed to vehicles,and pedestrians are safe there.
In London there is another experiment:part of the street is for buses only,so the buses can travel fast．There are no cars or taxies in front of them.
What the writer worries about in a big city is__.A.the number of traffic lights
B.the shortage of buses
C.the lack of motorways
D.the traffic congestion答案：D解析：参见第一段。 -
第14题：
共用题干
Traffic Jams一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 Institu-
te.While alternative ways of getting around are available,most people still choose their cars because they are
looking for convenience,comfort and privacy.
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 centres 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.If charged high enough,some drivers may_________to enter certain parts of town.
A:go by bus
B:encourage more private cars
C:drive around
D:spend more money
E:reduce traffic jams
F:travel regularly答案：A解析：由文章第一段主题句“Traffic congestion affects people throughout the world."，可知交通 拥堵是全球性问题。故选B。
文章第二段第一句是主题句，该段主要讲人们为了在交通拥堵时顺利通过，而不得不付费。故选E。
文章第三段主要讲解决交通拥堵的另一个方法，即灵活上下班时间。故选C。
文章第四段提到，城市规划者提出多修路可以解决交通拥堵的问题，但作者认为这一 方案不能减少汽车数量，其效果是相反的。故选D。
由文章第一段最后一句话，"most people still choose their cars because they are looking forconvenience , comfort and privacy.”可知，选C。
由文章第二段第二句话，"if the toll is high enough, some drivers will cancel their trips or go by bus or train.”可知，选A。
参考26题解析。
文章第五段倒数第二句话，"the American government has decided to spend some $7billion on helping to increase capacity on public transport systems and upgrade them with more effi-cient technologies.”可知，选D。 -
第15题：
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.Paragraph 3______
A:Paying to Get in
B:A Solution Which Is No Solution
C:Changing Work Practice
D:Closing City Centers to Traffic
E:Not Doing Enough
F:A Global Problem答案：C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。 -
第16题：
Which two statements are true about traffic shaping and traffic policing？（）
- A、both traffic shaping and traffic policing cause retransmissions of connection-oriented protocols such as TCP
- B、both traffic shaping and traffic policing support the marking and re-marking of traffic
- C、the effects of traffic shaping and traffic policing when configured on a router are applied to outgoing traffic
- D、traffic shaping queues excess traffic whereas traffic policing discards excess traffic
- E、traffic shaping allows the traffic to exceed the bit rate whereas traffic policing prevents the traffic from exceeding the bit rate
正确答案:C,D -
第17题：
Which statement is correct regarding exception traffic processing?（）
- A、Exception traffic is only handled by the PFE
- B、Exception traffic is rate-limited across the internal link to protect the RE
- C、Exception traffic is not prioritized during times of congestion
- D、Exception traffic is forwarded based on forwarding table entries
正确答案:B -
第18题：
Which Cisco IOS traffic-shaping mechanism statement is true？ （）
- A、class-based policing is configured using the Modular QoS command-line （MQC）
- B、only the Frame Relay traffic-shaping （FRTS） mechanism can interact with a Frame Relay network， adapting to indications of Layer2 congestion in the WAN links
- C、Distributed Traffic Shaping （DTS） is configured with the police command under the policy map configuration
- D、both Frame Relay traffic shaping （FRTS） and virtual IP （VIP）-based Distributed Traffic Shaping （DTS） have the ability to mark traffic
正确答案:A -
第19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 AS
- B、Traffic and prefixes originating from Transit AS are carried across a Stub AS to their destination AS
- C、Traffic and prefixes originating from Transit AS are carried across a Stub AS to their Source AS
- D、None of the above
正确答案:A -
第20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.
正确答案:C -
第21题：
多选题Which two statements are true about traffic shaping and traffic policing？（）Aboth traffic shaping and traffic policing cause retransmissions of connection-oriented protocols such as TCP
Bboth traffic shaping and traffic policing support the marking and re-marking of traffic
Cthe effects of traffic shaping and traffic policing when configured on a router are applied to outgoing traffic
Dtraffic shaping queues excess traffic whereas traffic policing discards excess traffic
Etraffic shaping allows the traffic to exceed the bit rate whereas traffic policing prevents the traffic from exceeding the bit rate
正确答案： C,D解析： 暂无解析 -
第22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.正确答案：
1.overcrowding 文章第一段第五句提到“This overcrowding will cause other problems - more crime, dirtier streets, and worse problems with traffic than we have now”,题目为原文的被动语态表述,因此答案为overcrowding。
2.urban areas 文章第一段最后两句提到“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”,即,由于生活的艰辛,没有人愿意生活在市内。
3.see no hope 文章第二段最后一句提到“These urban problems have been getting worse, not better, so many people see no hope for the future of the city”,因此答案为see no hope。
4.Stockholm 文章最后一段第三句提到“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”,句中Stockholm与London并列,因此答案为Stockholm。
5.rebuild downtown areas 文章最后一段中作者举例说明很多城市已经找到了解决城市存在的问题的方法,美国城市即所举例子之一。倒数第三句提到:“Many U. S. cities are rebuilding their downtown areas”,同时考虑到答案不能超过三个词,可知答案为rebuild downtown areas。解析： 暂无解析 -
第23题：
单选题—Sorry I’m late, but I got caught in a traffic jam. —That’s all right.______AI prefer strawberry jam.
BYou’ve learnt to deal with our traffic.
CI’m not late for our appointment, am I?
DYou’re not used to traffic jams.
正确答案： C解析：
句意：——对不起，我来晚了，遇上了堵车。——没关系，你还没习惯堵车。答话者安慰致歉的人，选项D符合情景。故答案是D项。 -
第24题：
单选题Assuming both paths shown in the exhibit are available, which statement is correct?（）ATraffic matching the default route will use 10.1.1.1 as the next hop.
BTraffic matching the default route will use 10.1.1.254 as the next hop.
CTraffic matching the default route will be load-balanced per packet across both next hops.
DTraffic matching the default route will be load-balanced per flow across both next hops.
正确答案： C解析： 暂无解析