[填空题]Although States were allowed to coin money right after the American Revolution, they are_____ __________________(不允许这样做) today.

[填空题]Although States were allowed to coin money right after the American Revolution, they are_____ __________________(不允许这样做) today.

[单项选择]

Although social changes in the United States were being wrought throughout most of the nineteenth century, public awareness of the changes increased to new levels in the 1890’s. The acute, growing public awareness of the social changes that had been taking place for some time was tied to tremendous growth in popular journalism in the late nineteenth century, including growth in quantity and circulation of both magazines and newspapers. These developments, in addition to the continued growth of cities, were significant factors in the transformation of society from one characterized by relatively isolated self-contained communities into an urban, industrial nation. The decade of the 1870’s, for example, was a period in which the sheer number of newspapers doubled, and by 1880 the New York Graphic had published the first photographic reproduction in a newspaper, portending a dramatic rise in newspaper readership. Between 1882 and 1886 alone, the price of daily newspapers
A. changes in the distribution system
B. larger supply of paper
C. an increase in people’s awareness of social changes
D. greater numbers of journalists

[填空题]Even if all government money for research were cut off, the force of competition ______(仍将带来技术的进步).

[填空题]The first Chinese to reach the United States were envied by their American competitors because of their success.

[填空题]The United States Olympic Committee raises money from Television companies by selling them the right to broadcast ______.

[填空题]The United States spend much more money on programs to prevent diseases than on treatment for diseases.