单项选择题

Greenspace facilities are contributing to an important extent to the quality of the urban environment. Fortunately it is no longer necessary that every lecture or every book about this subject has to start with the proof of this idea. At present it is generally accepted, although more as a self-evident statement than on the base of a closely-reasoned scientific proof. The recognition of the importance of greenspace in the urban environment is a first step on the right way, this does not mean, however, that sufficient details are known about the functions of greenspace in towns and about the way in which the inhabitants are using these spaces. As to this rather complex subject I shall, within the scope of this lecture, enter into one aspect only, namely the recreative function of greenspace facilities.
The theoretical separation of living, working, traffic and recreation which for many years has been used in town and country planning, has in my opinion resulted in disproportionate attention for forms of recreation far from home, whereas there was relatively little attention for improvement of recreative possibilities in the direct neighbourhood of the home. We have come to the conclusion that this is not right, because an important part of the time which we do not pass in sleeping or working, is used for activities at and around home. So it is obvious that recreation in the open air has to begin at the street-door of the house. The urban environment has to offer as many recreation activities as possible, and the design of these has to be such that more obligatory activities can also have a recreative aspect.
The very best standard of living is nothing if it is not possible to take a pleasant walk in the district, if the children cannot be allowed to play in the streets because the risks of traffic are too great, if during shopping you can nowhere find a spot of enjoying for a moment the nice weather, in short, if you only feel yourself at home after the street-door of your house is closed after you.
The main idea of this passage is that______.

[A] better use of greenspace facilities should be made so as to improve the quality of our life

B. attention must be directed to the improvement of recreative possibilities

C. the urban environment is providing more recreation activities than it did many years ago

D. priority must be given to the development of obligatory activities
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单项选择题
Freight costs were reduced to 10% of what they had been because of ______. [A] the decline in taxes [B] the construction of the railroads [C] the construction of the Erie Canal [D] the development of industry
About 1815, when many Americans from the east coast had already moved to the west. trade routes from the ports to the central regions of the country began to be a serious problem, The slow wagons of that time. drawn by horses or oxen, were too expensive for moving heavy freight very far. Americans had long admired Europe’s canals. In New York State a canal seemed the best solution to the transportation problem From the eastern end of Lake Erie all the way across the state to the Hudson River there is a long trip of low land Here the Erie Canal was constructed. After working for several years it was completed in 1825.
The canal produced an immediate effect. Freight costs were cut to about one-tenth of what they had been. New York City, which had been smaller than Philadelphia and Boston, quickly became the leading city of the coast. In later years, transportation routes on the Great Lakes were joined to routes on the Mississippi River. Then New York City became the end point of a great inland shipping system that emended from the Atlantic Ocean far up to the western branches of the Mississippi.
The new railroads made canal shipping not as important as before, but it tied New York even more closely to the central regions of the country. It was easier for people in the central states to ship their goods to New York for export overseas.
Exports from New York were greater than imports. Consequently, shipping companies were eager to fill their ships with passengers on the return trip from Europe. Passengers could come from Europe very cheaply as a result.
Thus New York became the greatest port for receiving people from European countries. Many of them remained in the city. Others stayed in New York for a few weeks, months or years, and then moved to other parts of the United States. For these great numbers of new Americans. New York had to provide homes, goods and services. Their labor helped the city become great