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[主观题]
The highway policeman on duty ______ the driver who was speeding and asked to see his lice
nse.
A．pulled up
B．pulled in
C．pulled out
D．pulled off
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题目内容
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题目内容
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A．pulled up
B．pulled in
C．pulled out
D．pulled off
如果结果不匹配，请 联系老师 获取答案
更多“The highway policeman on duty …”相关的问题
_______ is standing at the corner of the street.
A．A police
B．The police
C．Police
D．A policeman
They built a highway _______ the mountains. A. lead into B. to lead into C. led into D. leading into
A．travel
B．motion
C．construction
D．excitement
A．too
B．also
C．else
D．alone
A. Watching over
B. Watch on
C. Watched over
D. Be watched over
If more people shared a ride, there would be ______.
A．fewer cars on the road
B．higher insurance rates
C．more highway accidents
D．more cars on the road
The motorcar will undoubtedly change significantly over the next 30 years. It should become smaller, safer, and more economical, and should not be powered by the gasoline engine. The car of the future should be far more pollution-free than present types.
Regardless of its power source, the auto in the future will still be the main problem in urban traffic congestion(拥挤). One proposed solution to this problem is the automated highway system.
When the auto enters the highway system, a retractable(可伸缩的) arm will drop from the auto and make contact with a rail, which is similar to those powering subway trains electrically. Once attached to the rail, the car will become electrically powered from the system, and control of the vehicle will pass to a central computer. The computer will then monitor all of the car's movements.
The driver will use a telephone to dial instructions about his destination into the system. The computer will calculate the best route, and reserve space for the car all the way to the correct exit from the highway. The driver will then be free to relax and wak for the buzzer(蜂鸣器) that will warn of his coming exit. It is estimated that an automated highway will be able to handle 10,000 vehicles per hour, compared with the 1,400 to 2,000 vehicles that can be carried by a present-day highway.
One significant improvement in the future car may probably be ______.
A．its power source
B．its driving system
C．its monitoring system
D．its seating capacity
Highways
Early in the 20th century, most of the street and roads in the U.S. were made of dirt, brick, and cedar wood blocks. Built for the horse, carriage and foot traffic, they were usually poorly cared for and too narrow to accommodate automobiles.
With the increase in auto production, private turnpike (收费公路) companies under local authorities began to spring up, and by 1921 there were 387,000 miles of paved roads. Many were built using certifications of 19th century Scottish engineers Thomas Telford and John MacAdam (for whom the macadam surface is named), whose specifications stressed the importance of adequate drainage. Beyond that, there were no national standards for size, weight restrictions, or commercial signs. During World War I, roads thorough the country nearly destroyed by the weight of trucks. When General Eisenhower returned from Germany in 1919, after serving in the U.S. Army's first transcontinental motor convey, he noted "the old convoy had started me thinking about good, twoline highway, but Germany's autobahn motorways had made me see the wisdom of broader ribbons across the land."
It would take another war before the federal government would act on a national highway system. During World War II, a tremendous increase in truck and new roads required. The war demonstrated how critical highways were to the defense effort. Thirteen percent of defense plants received all their supplies by truck, and almost all other plants shipped more than half of their products by vehicle. The war also revealed that local control highways had led to a confusing variety of design standards. Even federal and state highways did not follow basic standards. Some states allowed trucks up to 36.000 pounds, while other restricted anything over 7000 pounds. A government study recommended a national highway system of 33,920 miles, and congress passed FederalAid Highway Act of 1944, which called for strict, centrally controlled design criteria.
The interstate highway system was finally launched in 1956 and has been hailed as one of the greatest public works projects of century. To build its 44000mile web of highways, bridges and tunnel, hundreds of unique engineering designs and solutions had to be work out. Consider the many geographic features of the country: mountains, steep grades, wetlands, rivers, deserts and plants. Variables included the slope of the land, the ability of the pavement to support the load, the intensity of the road use, and the nature of the underlying soil. Urban areas were another problem. Innovative designs of roadways, bridges, overpasses and interchanges that could run through and bypass urban areas soon began to weave their way across the country, forever altering the face of America.
Longspan, segmentconcrete, cabstayed bridges such as Hale boggs in Louisian and the Sunshine Skyway in Florida, and remarkable tunnels like fort McHenry in Maryland and Mr. Baker in Washington, met many of the nation's challenges. Traffic control systems and methods of construction developed under the interstate program soon influenced highway construction around the world, and were invaluable in improving the condition of urban and streets and traffic patterns.
Today, the interstate system links every major city in the U.S., with Canada and Mexico. Build with the safety in mind, the highways have wide lines and shoulders dividing and median or barrier, long entry and exit lanes, curves engineered for safe turns, and limited success. The death rate on highways is half of all other U.S. road (0.86 deaths per 100 million passengers miles compare to 1.99 death per 100 million on all other roads).
By opening the North American continent, highways have enable consumer goods services to reach people in remote and rural area of the country, spurred the suburbs, and provided people with greater options in terra of jobs, access to c
A．Y
B．N
C．NG
Examples of public goods are not as rare as one might expect. A flood control dam is a public good. Once the dam is built, all persons living in the area will benefit--irrespective of their own contribution to the construction cost of the dam. The same holds true for highway signs or aids to navigation. Once a lighthouse is built, no ship of any nationality can be effectively excluded from the utilization of the lighthouse for navigational purposes. National defense is another example. Even a person who voted against military expenditures or did not pay any taxes will benefit from the protection afforded.
It is no easy task to determine the social costs and social benefits associated with a public good. There is no practicable way of charging drivers for looking at highway signs, sailors for watching a lighthouse, and citizens for the security provided to them through national defense: Because the market does not provide the necessary signals, economic analysis has to be substituted for the impersonal judgement of the marketplace.
With what topic is the passage mainly concerned？
A．Mechanisms for safer navigation.
B．The economic structure of the marketplace.
C．A specific group of commodities.
D．The advantages of lowering taxes.
