[填空题]In the late 20th century, the Interstate Highway System was officially renamed after Eisenhower in honor of ______.

[单项选择]In the late 20th century, information has acquired two major utilitarian connotations. On the one hand, it is considered an economic resource, somewhat on par with other resources such as labour, material, and capital. This view stems from evidence that the possession, manipulation, and use of information can increase the cost-effectiveness of many physical and cognitive processes. The rise in information-processing activities in industrial manufacturing as well as in human problem solving has been remarkable. Analysis of one of the three traditional divisions of the economy, the service sector, shows a sharp increase in information-intensive activities since the beginning of the 20th century. By 1975 these activities accounted for half of the labour force of the United States, giving rise to the so-called information society.
As an individual and societal resource, information has some interesting characteristics that separate it from the traditional notions of economic resources
A. the remarkable rise in information-processing activities
B. a sharp increase in information-intensive activities
C. information as an economic resource
D. the birth of information society

[填空题]

In the 20th decennial U. S. census, taken in 1980, the resident population in the United States numbered 226, 547,346. About 188.3 million (83.2%) were classified as white, 26.5 million (11.7%) as black, ll.7 million (5.1%) as members of other races.
The history of the United States is really the story of various immigrants groups working together to build a unique nation. During the 1500s, French and Spanish explorers visited the New World. But the first Europeans who came to stay were mostly the English. In 1790, when the first U. S. census was taken, the white population of the 13 original states totaled slightly more than 3 million. About 75 percent of these first Americans were of British ancestry; the rest were German, Dutch, French, Swiss, and Spanish. The English gave the new nation its language, its laws and its philosophy of government
The composition of the American population:
Census of 1980: the number of the United States is (46) .
Ab