一篇2000字的英语文章

Amazing Intelligent Transportation According to the Beijing Traffic Management Bureau of Statistics data show that the rapid growth of motor vehicles is much higher than the construction of road traffic, then how to solve traffic congestion problems? Intensive family car trip 1-11 months of last year's vehicle sales exceeded 10 million, an increase of 42.39%. Motor vehicles in Beijing from 3 million to 4 million spent only two years and six months, this growth is the transportation construction in any case can not match. Yang, Tsinghua University, Research Associate, Institute of Transportation analysis of traffic jams formed Emerging Artists reasons that: "motor vehicle ownership and use of excessive growth, and road construction, traffic management, energy and talent development of the reserves can not keep up the speed of motor vehicles. In particular, the use of a motor vehicle, family car travel, Beijing, intensity (frequency and distance of travel) is 8 times the family without a car, so that relatively great pressure on road transport. " Frequency of use of motor vehicles is a very important factor, only "four million" figure does not tell the whole story. Sample survey data show that the frequency of use of each car 5 times higher than the U.S., which increases the likelihood of traffic congestion. According to deputy chief engineer of the Ministry of Communications Research Institute, Transportation Research Center, Jiang Yulin, director of sustainable development description: "The ownership of motor vehicles and road construction is unbalanced, and we are the construction of urban road space is constrained resource conditions, and only 10 % -15% of the urban space can be used for transportation construction. Beijing rapid rate of population growth, many of the current road network is compressed the original transform walking and bike paths, there are historical problems. "growth and use of motor vehicles is no doubt become the most direct reason for traffic jams. In fact, any international city has undergone a rapid growth as a result of motor vehicle traffic congestion stage. Data shows that the late 70s of last century, the Tokyo motor 300 million, far more than the current congestion in Beijing, known as the "commuter hell." 1995, Seoul, South Korea reached 2,000,000 vehicles, already crowded, almost to the extent could not leave. Currently, the total motor vehicles in Tokyo nearly 800 million, but the traffic is better in Beijing, this is why? Some experts believe that international experience shows that urban transport can be optimized through the management structure, differentiated charging policy to take reasonable limit car, the implementation of measures such as tail number limit line can ease the congestion to some extent. Intelligent Transportation to improve road traffic management is to improve the utilization efficiency of urban road system, an effective way. According to Jiang Yulin describes: "the major cities are using the latest information technology to build intelligent traffic management system, GIS system management bus lines, installation of the bus map, e-stops, visual query to achieve the bus." These technology to facilitate people's travel. Such as Chang'an new traffic probe, which can automatically measure traffic junctions, thereby controlling the traffic lights change, is the visual impression of intelligent transportation. Young Emerging Artists stressed: "Intelligent Transportation should be a full range of social services for the whole system, traffic data and related transportation information should be open to the entire community." Jiang Yulin who agree with this attitude, "The government should support intelligent transportation, cooperation on strengthening the management to change the public security and traffic situation of asymmetric information and data, better integration of traffic information and transit information. " However, the traffic problem is a matter of economic, social, cultural and administrative complex system problems, many structural problems can not simply rely on can not be resolved, such as information technology. Tongji Intelligent Transport System (ITS) Research Center, Yang Xiaoguang that "when the basic pattern of the city and traffic is determined, including the use of information technology to improve the traffic problems may well be one of the measures, but the technology is no different from drugs alone is not symptomatic . promote the Intelligent Transport System technology, to fully achieve the government, industry and academia combine attention to the service function of intelligent transportation systems and industrial properties. "

Five score years ago, a great American, in whose symbolic shadow we stand signed the Emancipation Proclamation. This momentous decree came as a great beacon light of hope to millions of Negro slaves who had been seared in the flames of withering injustice. It came as a joyous daybreak to end the long night of captivity. But one hundred years later, we must face the tragic fact that the Negro is still not free. One hundred years later, the life of the Negro is still sadly crippled by the manacles of segregation and the chains of discrimination. One hundred years later, the Negro lives on a lonely island of poverty in the midst of a vast ocean of material prosperity. One hundred years later, the Negro is still languishing in the corners of American society and finds himself an exile in his own land. So we have come here today to dramatize an appalling condition. In a sense we have come to our nation's capital to cash a check. When the architects of our republic wrote the magnificent words of the Constitution and the Declaration of Independence, they were signing a promissory note to which every American was to fall heir. This note was a promise that all men would be guaranteed the inalienable rights of life, liberty, and the pursuit of happiness. It is obvious today that America has defaulted on this promissory note insofar as her citizens of color are concerned. Instead of honoring this sacred obligation, America has given the Negro people a bad check which has come back marked "insufficient funds." But we refuse to believe that the bank of justice is bankrupt. We refuse to believe that there are insufficient funds in the great vaults of opportunity of this nation. So we have come to cash this check -- a check that will give us upon demand the riches of freedom and the security of justice. We have also come to this hallowed spot to remind America of the fierce urgency of now. This is no time to engage in the luxury of cooling off or to take the tranquilizing drug of gradualism. Now is the time to rise from the dark and desolate valley of segregation to the sunlit path of racial justice. Now is the time to open the doors of opportunity to all of God's children. Now is the time to lift our nation from the quicksands of racial injustice to the solid rock of brotherhood. It would be fatal for the nation to overlook the urgency of the moment and to underestimate the determination of the Negro. This sweltering summer of the Negro's legitimate discontent will not pass until there is an invigorating autumn of freedom and equality. Nineteen sixty-three is not an end, but a beginning. Those who hope that the Negro needed to blow off steam and will now be content will have a rude awakening if the nation returns to business as usual. There will be neither rest nor tranquility in America until the Negro is granted his citizenship rights. The whirlwinds of revolt will continue to shake the foundations of our nation until the bright day of justice emerges. But there is something that I must say to my people who stand on the warm threshold which leads into the palace of justice. In the process of gaining our rightful place we must not be guilty of wrongful deeds. Let us not seek to satisfy our thirst for freedom by drinking from the cup of bitterness and hatred. We must forever conduct our struggle on the high plane of dignity and discipline. we must not allow our creative protest to degenerate into physical violence. Again and again we must rise to the majestic heights of meeting physical force with soul force. The marvelous new militancy which has engulfed the Negro community must not lead us to distrust of all white people, for many of our white brothers, as evidenced by their presence here today, have come to realize that their destiny is tied up with our destiny and their freedom is inextricably bound to our freedom. We cannot walk alone. And as we walk, we must make the pledge that we shall march ahead. We cannot turn back. There are those who are asking the devotees of civil rights, "When will you be satisfied?" we can never be satisfied as long as our bodies, heavy with the fatigue of travel, cannot gain lodging in the motels of the highways and the hotels of the cities. We cannot be satisfied as long as the Negro's basic mobility is from a smaller ghetto to a larger one. We can never be satisfied as long as a Negro in Mississippi cannot vote and a Negro in New York believes he has nothing for which to vote. No, no, we are not satisfied, and we will not be satisfied until justice rolls down like waters and righteousness like a mighty stream. I am not unmindful that some of you have come here out of great trials and tribulations. Some of you have come fresh from narrow cells. Some of you have come from areas where your quest for freedom left you battered by the storms of persecution and staggered by the winds of police brutality. You have been the veterans of creative suffering. Continue to work with the faith that unearned suffering is redemptive. Go back to Mississippi, go back to Alabama, go back to Georgia, go back to Louisiana, go back to the slums and ghettos of our northern cities, knowing that somehow this situation can and will be changed. Let us not wallow in the valley of despair. I say to you today, my friends, that in spite of the difficulties and frustrations of the moment, I still have a dream. It is a dream deeply rooted in the American dream. I have a dream that one day this nation will rise up and live out the true meaning of its creed: "We hold these truths to be self-evident: that all men are created equal." I have a dream that one day on the red hills of Georgia the sons of former slaves and the sons of former slaveowners will be able to sit down together at a table of brotherhood. I have a dream that one day even the state of Mississippi, a desert state, sweltering with the heat of injustice and oppression, will be transformed into an oasis of freedom and justice. I have a dream that my four children will one day live in a nation where they will not be judged by the color of their skin but by the content of their character. I have a dream today. I have a dream that one day the state of Alabama, whose governor's lips are presently dripping with the words of interposition and nullification, will be transformed into a situation where little black boys and black girls will be able to join hands with little white boys and white girls and walk together as sisters and brothers. I have a dream today. I have a dream that one day every valley shall be exalted, every hill and mountain shall be made low, the rough places will be made plain, and the crooked places will be made straight, and the glory of the Lord shall be revealed, and all flesh shall see it together. This is our hope. This is the faith with which I return to the South. With this faith we will be able to hew out of the mountain of despair a stone of hope. With this faith we will be able to transform the jangling discords of our nation into a beautiful symphony of brotherhood. With this faith we will be able to work together, to pray together, to struggle together, to go to jail together, to stand up for freedom together, knowing that we will be free one day. This will be the day when all of God's children will be able to sing with a new meaning, "My country, 'tis of thee, sweet land of liberty, of thee I sing. Land where my fathers died, land of the pilgrim's pride, from every mountainside, let freedom ring." And if America is to be a great nation, this must become true. So let freedom ring from the prodigious hilltops of New Hampshire. Let freedom ring from the mighty mountains of New York. Let freedom ring from the heightening Alleghenies of Pennsylvania! Let freedom ring from the snowcapped Rockies of Colorado! Let freedom ring from the curvaceous peaks of California! But not only that; let freedom ring from Stone Mountain of Georgia! Let freedom ring from Lookout Mountain of Tennessee! Let freedom ring from every hill and every molehill of Mississippi. From every mountainside, let freedom ring. When we let freedom ring, when we let it ring from every village and every hamlet, from every state and every city, we will be able to speed up that day when all of God's children, black men and white men, Jews and Gentiles, Protestants and Catholics, will be able to join hands and sing in the words of the old Negro spiritual, "Free at last! free at last! thank God Almighty, we are free at last!"

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