题目内容
（请给出正确答案）
A．networts
B．switching elements
C．computers
D．data terminal equipment
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（由简答题聘请的专业题库老师提供的解答）
更多“In most wide area networks, the communication subnet consists of two distinct components：t”相关的问题
A．in contrast with
B．rather than at
C．as opposed to at
D．instead of
E．as against
Long ago the Panamint Indians called this place "Tomesha"—the land of fire. Death Valley's present name dates back to 1849, when a group of miners coming across from Nevada became lost in its unpleasantness and hugeness and their adventure turned out to be a sad story. Today Death Valley has been declared a National Monument (纪念碑) and is crossed by several well-marked roads where good services can be found easily. Luckily the change created by human settlement has hardly mined the special beauty of this place.
Here nature created a lot of surprising, almost like the sights on the moon, ever- changing as the frequent wind moves the sand about, showing the most unusual colors. One of the most astonishing and variable parts of Death Valley is the Devil's Golf Course, where it seems hard for one to tell reality from terrible dreams. Sand sculptures (沙雕) stand on a frightening ground, as evening shadows move and lengthen.
______is the lowest place in the desert.
A．Tomesha
B．Death Valley
C．Nevada
D．Badwater
This spurt of suburban expansion, however, does not alter the basic fact that the United States has become one of the most urban nations on the face of the earth. Census (人口调查) Bureau figures show that the rural population has been shrinking steadily since 1830. When the United States became a nation it had no large cities at all; today some fifty cities have populations of more than 258 ,000. Mammoth complexes of cities are developing in the area of the East Coast and the east north-central states, on the Pacific and Gulf coasts, and near the shores of the Great Lakes. Some sociologists now regard the entire 600-mile stretch between Boston and Washington, D. C.—an area holding a fifth of the country' s population—as one vast city or, as they call it, megalopolis.
A traditional American belief is that ______.
A．few people live on farms
B．the nation consists mainly of small towns and wide open spaces
C．the population is the greatest in the world
D．the United States is a nation of big cities
【B5】, this spurt of suburban expansion does not alter the basic fact that the United States【B6】one of the most urban nations on the face of the earth. Census Bureau【B7】show that the【B8】population has been shrinking steadily since 1880. When the United States became a nation it had no large cities at all; today【B9】fifty cities have populations of more than 258,000. Mammoth complexes of cities are developing in the area of the East Coast and the east north central states, on the pacific and Gulf coasts, and near the shores of the Great Lakes. Some sociologists now regard the entire 600-mile stretch between Boston and Washington, D.C.—an area holding a fifth of the country's population—【B10】one vast city or, as they call it, megalopolis.
【B1】
A．past
B．recent
C．future
D．nowadays
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